Toyota Prius: Hybrid Battery System (for Phev Model)

Toyota Prius (XW60) 2023-2025 Service Manual / Engine/Hybrid System / Hybrid / Battery Control / Hybrid Battery System (for Phev Model)

Precaution
Definition Of Terms
Parts Location
How To Proceed With Troubleshooting
Utility
Terminals Of Ecu
Diagnosis System
Dtc Check / Clear
Freeze Frame Data
Vehicle Behavior Chart
Data List / Active Test
Diagnostic Trouble Code Chart
Registration / Initialization / Learning
VEHICLE CONTROL HISTORY (RoB)
System Voltage (BATT) Circuit Short to Ground or Open (P056014)
Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid (P060629)
Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground (P0A9B11,...,P0CB215)
Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range (P0A9B1C,...,P0CB21C)
Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range (P0A9B2A,...,P306B62)
Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure (P0AA749)
Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground (P0ABF11,P0ABF15,P0B0E11,P0B0E15,P1CBB12,P1CBB14,P2BE411,P2BE415)
Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure (P0ABF28)
Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range (P0ABF2A)
Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure (P0B1362)
Hybrid/EV Battery State of Charge High (P0C3000)
Hybrid/EV Battery Cooling System "A" Performance (P0C3200)
Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground (P0C4211,P0C4215,P0CD511,P0CD515)
Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground (P0D0A11)
Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open (P0D0A15)
Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground (P0D1111)
Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open (P0D1115)
Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold (P0D1A18,P0D1A19,P1F6900)
Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck (P0D1A71)
Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance (P0E2D00)
Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground (P0E6D11)
Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open (P0E6D15)
Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure (P19CF62)
Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range (P1A001C,P1A051C,P301A1C)
Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold (P1A6017,P1A6317,P31AA17)
Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold (P1A6116,P1A6416,P31AB16)
Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) (P1A8100,P1A8600,P1A8B00)
Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open (P1AC413-P1AC613)
Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On (P1AC49E-P1AC69E)
System Voltage (AM) Circuit Voltage Below Threshold (P1AFC00)
Flying Capacitor Circuit Voltage Out of Range (P1AFD00)
Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range (P1AFD1C)
Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground (P1B4011,P1B4015,P1B4511,P1B4515)
Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure (P1B4A62)
Hybrid/EV Battery Heater Relay Actuator Stuck Open (P1B4B72)
Hybrid/EV Battery Heater Relay Actuator Stuck Closed (P1B4B73)
Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery (P1B8312,P1B8314)
Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range (P1B831C)
High Voltage Power Resource Internal Electronic Failure (P1C8549)
Hybrid/EV Battery Stack 1 Voltage Difference Out of Range (P1CC81E,P1CC91E,P1CCA1E)
Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range (P2BE41C)
Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure (P2BE428)
Hybrid/EV Battery Discharge Control Malfunction (P300000)
Hybrid/EV Battery Control System Circuit Voltage Below Threshold (P300016)
Hybrid/EV Battery Control System Over Temperature (P30004B)
Hybrid/EV Battery Voltage High (P31B300)
Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range (P33DA1E-P33DC1E)
Hybrid/EV Battery Stack 1 Capacity Decline (P33E600-P33E800)
Lost Communication with ECM/PCM "A" Missing Message (U010087)
Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message (U115087)
"HAVE TRACTION BATTERY INSPECTED" is displayed
ECU Power Source Circuit
Instructions for Connecting SST

Precaution

PRECAUTION

CAUTION:

Before the following operations are conducted, take precautions to prevent electric shock by turning the ignition switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the Toyota Prius vehicle.
After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

*a

Without waiting for 10 minutes
When troubleshooting high voltage circuit, use either a tool wrapped with vinyl insulation tape or an insulated tool. (It is extremely dangerous when a high-voltage charge passes through a non-insulated tool causing a short.)
When turning the ignition switch ON during an inspection, do not press the ignition switch while depressing the brake pedal.
Pressing the ignition switch with the brake pedal depressed causes the system to enter the READY-on state. This is very dangerous because high voltage may be applied to the inspection area.

NOTICE:

After removing the service plug grip, turning the ignition switch to ON (READY) may cause a malfunction. Do not turn the ignition switch to ON (READY) unless instructed by the repair manual.
Turn the ignition switch off before performing any resistance checks.
Turn the ignition switch off before disconnecting or reconnecting any connectors.
When high-voltage connectors are removed, wrap the connectors with insulation tape to prevent them from contacting foreign matter.

PRECAUTIONS FOR INSPECTING HYBRID BATTERY SYSTEM

HINT:

Removing the service plug grip
Click here
Checking the terminal voltage
Click here
Disconnecting the motor cable
Click here
Disconnecting the floor under wire
Click here
Removing the inverter with converter
Click here

HYBRID CONTROL SYSTEM ACTIVATION

HINT:

When the warning is illuminated, or the auxiliary battery has been disconnected and reconnected, attempting to turn the ignition switch to ON (READY) may not start the system (the system may not enter the READY-on state) on the first attempt. If so, turn the ignition switch off and reattempt to start the hybrid system.

DISPOSING OF HV BATTERY

When disposing of HV batteries, make sure to return them through an authorized collection agent who is capable of handling them safely. If they are returned via the manufacturer specified route, they will be returned properly and in a safe manner by an authorized collection agent.

CAUTION:

After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.
Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned.
Therefore, make sure to return HV battery through an authorized collection agent.

*a

Dealer

*b

Battery Collection Agent
To reduce the risk of fire, HV battery must not be stored in an area where they will be exposed to fire or high temperatures.
If the temperature of the HV battery is high, leave the Toyota Prius vehicle until the temperature drops.
Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing them.
If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

NOTICE:

Before returning the HV battery, make sure to perform a recovery inspection.

Click here

PRECAUTIONS WHEN REPLACING HYBRID Toyota Prius Vehicle CONTROL ECU

NOTICE:

Before replacing the hybrid vehicle control ECU, refer to Registration.
Click here
When the hybrid vehicle control ECU is replaced, perform the ECU configuration.
Click here
When the hybrid Toyota Prius vehicle control ECU is replaced, update the ECU security key.
Click here
After replacing the hybrid vehicle control ECU, it is necessary to perform the vehicle specification information procedure for the ECU.
Click here
- If the Toyota Prius vehicle specification information procedure has not been performed, vehicle control history (RoB) will be stored.
- After performing the vehicle specification information procedure, perform a health check using the GTS and confirm that there are no DTCs stored.

PRECAUTIONS WHEN REPLACING INVERTER WITH CONVERTER ASSEMBLY

NOTICE:

When the inverter with converter assembly is replaced, perform the ECU configuration.

Click here

DISCONNECTING AND RECONNECTING NEGATIVE AUXILIARY BATTERY CABLE

NOTICE:

To prevent damage to electronic components, disconnect the cable from the negative (-) auxiliary battery terminal before performing work.
Be sure to turn the ignition switch off before disconnecting the cable from the negative (-) auxiliary battery terminal.
Be careful not to damage the cable or terminal.
When the negative (-) auxiliary battery terminal is disconnected, the clock and radio settings, etc., as well as any stored DTCs, will be cleared.
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

*1	Cable
*2	Negative (-) Auxiliary Battery Terminal

PRECAUTIONS FOR DISCONNECTING AMD TERMINAL

The AMD terminal is connected to the positive terminal of the auxiliary battery.

*1	AMD Terminal (Inverter with Converter Assembly Side)
*2	AMD Terminal (No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly Side)

(a) Be sure to disconnect the cable from the negative (-) auxiliary battery terminal before disconnecting the AMD terminal from the No. 1 luggage room relay block and No. 1 junction block assembly.

NOTICE:

Be sure to disconnect the cable from the negative (-) auxiliary battery terminal before disconnecting the AMD terminal from the No. 1 engine room relay block and No. 1 junction block assembly.
A short circuit to ground may occur if the AMD terminal is disconnected before the cable is disconnected from the negative (-) auxiliary battery terminal. If a short circuit to ground occurs, a fusible link or fuse may break.
Do not disconnect the AMD terminal except when replacing the inverter with converter assembly.
When disconnection is necessary, be careful not to apply excessive force to the terminal.
After disconnecting the AMD terminal, wrap it with vinyl insulating tape.
Be sure to reconnect the AMD terminal to the No. 1 engine room relay block and No. 1 junction block assembly before reconnecting the cable to the negative (-) terminal of the auxiliary battery.

Definition Of Terms

DEFINITION OF TERMS

Term	Definition
Monitor Description	Description of what the battery ECU assembly monitors and how to detects malfunctions (monitoring purpose and its details).
Related DTCs	A group of diagnostic trouble codes that are output by the battery ECU assembly based on the same malfunction detection logic.
Typical Enabling Conditions	Preconditions that allow the battery ECU assembly to detect malfunctions. With all preconditions satisfied, the battery ECU assembly stores DTCs when the monitored value(s) exceeds malfunction threshold(s).
Sequence of Operation	Order of monitor priority, applied if multiple sensors and components are involved in a single malfunction detection process. Each sensor and component are monitored in turn and subsequent items are not monitored until the previous detection operation completes.
Required Sensors/Components	Sensors and components used by the battery ECU assembly to detect each malfunction.
Frequency of Operation	Number of times the battery ECU assembly checks for each malfunction during each driving cycle. "Once per driving cycle" means that the battery ECU assembly only checks for malfunctions once during a single driving cycle. "Continuous" means that the battery ECU assembly checks for malfunctions whenever enabling conditions are met.
Duration	Minimum time for which the battery ECU assembly must detect continuous deviation in monitored value(s) in order to store a DTC. Timing begins when typical enabling conditions are met.
Malfunction Thresholds	Value beyond which the battery ECU assembly determines malfunctions exist and stores DTCs.
MIL Operation	Timing of MIL illumination after a malfunction is detected. "Immediate" means that the battery ECU assembly illuminates the MIL as soon as a malfunction is detected. "2 driving cycles" means that the battery ECU assembly illuminates the MIL if the same malfunction is detected again during the next driving cycle.

Parts Location

PARTS LOCATION

ILLUSTRATION

*1	HYBRID Toyota Prius Vehicle CONTROL ECU	*2	AIRBAG SENSOR ASSEMBLY
*3	TRANSMISSION FLOOR SHIFTASSEMBLY	*4	ELECTRIC PARKING BRAKE SWITCH ASSEMBLY (COMBINATION SWITCH) - AUTO EV/HV MODE SWITCH - HV EV CHG HOLD MODE SWITCH - DRIVE MODE SELECT SWITCH
*5	ACCELERATOR PEDAL (WITH SENSOR) ROD ASSEMBLY	*6	DLC3
*7	COMBINATION METER ASSEMBLY	*8	STOP LIGHT SWITCH ASSEMBLY
*9	POWER DISTRIBUTION BOX ASSEMBLY	*10	AIR CONDITIONING AMPLIFIER ASSEMBLY

ILLUSTRATION

*1	INVERTER WITH CONVERTER ASSEMBLY	*2	COMPRESSOR WITH MOTOR ASSEMBLY
*3	INVERTER WATER PUMP ASSEMBLY	*4	HYBRID Toyota Prius Vehicle TRANSAXLE ASSEMBLY
*5	ECM	*6	NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY
*7	HV FLOOR UNDER WIRE	*8	HV SUPPLY BATTERY ASSEMBLY
*9	AUXILIARY BATTERY	*10	AC CHARGER INLET CABLE

ILLUSTRATION

*1	INVERTER WITH CONVERTER ASSEMBLY	*2	LOW VOLTAGE CONNECTOR
*3	HV AIR CONDITIONING WIRE CONNECTION	*4	HV FLOOR UNDER WIRE (HV BATTERY) CONNECTION
*5	MOTOR CABLE CONNECTION	*6	INVERTER COVER - INTERLOCK
*7	MOTOR CABLE	*8	MOTOR TEMPERATURE SENSOR AND GENERATOR TEMPERATURE SENSOR CONNECTOR
*9	SHIFT CONTROL ACTUATOR ASSEMBLY	*10	HYBRID Toyota Prius Vehicle TRANSAXLE ASSEMBLY
*11	MOTOR RESOLVER, GENERATOR RESOLVER AND TRANSAXLE FLUID TEMPERATURE SENSOR CONNECTOR	*12	LOW VOLTAGE CONNECTOR (DC/DC CONVERTER)
*13	AMD TERMINAL	-	-

ILLUSTRATION

*1	ELECTRIC Toyota Prius Vehicle CHARGER ASSEMBLY	*2	CHARGER COOLING BLOWER
*3	SOLAR ENERGY CONTROL ECU ASSEMBLY	*4	PLUGIN CHARGE CONTROL ECU ASSMBLY
*5	ROOF WINDOW GLASS	-	-

ILLUSTRATION

*1	SERVICE PLUG GRIP	*2	NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY
*3	BATTERY ECU ASSEMBLY	*4	BATTERY VOLTAGE SENSOR
*5	SMRB	*6	SMRG
*7	CHRB	*8	CHRG
*9	CHRP	*10	PRECHARGE RESISTOR

ILLUSTRATION

*1	NO. 1 HV SUPPLY STACK SUB-ASSEMBLY	*2	NO. 2 HV SUPPLY STACK SUB-ASSEMBLY
*3	NO. 3 HV SUPPLY STACK SUB-ASSEMBLY	-	-

ILLUSTRATION

NO. 1 TRACTION BATTERY COOLER TUBE

- AIR CONDITIONING THERMISTOR

- MAGNET VALVE

NO. 2 TRACTION BATTERY COOLER TUBE

- AIR CONDITIONING PRESSURE SENSOR

NO. 1 TRACTION BATTERY COOLER CONDUCTOR

- AIR CONDITIONING THERMISTOR

ILLUSTRATION

NO. 1 TRACTION BATTERY HEATER

NO. 1 TRACTION BATTERY HEATER RELAY

How To Proceed With Troubleshooting

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

If the malfunction is not reproduced, perform a simulation test.

Click here

For the simulation test, reproduce the driving conditions that were present when the problem occurred. These conditions should be based on the customer's comments and Freeze Frame Data that is recorded with DTCs, such as the opening angle of the accelerator pedal, SOC (stateof charge), engine coolant temperature, engine speed, and generator (MG1) / front motor (MG2) / rear motor (MGR) rpm and torque.
When inspecting electrical circuits, check the connection condition of the connector and the contact pressure of each terminal.
Check the terminals for deformation, and check the connector for water ingress and foreign matter.

Click here

3.	CONDUCT BASIC INSPECTION

(a) Measure the auxiliary battery voltage with the ignition switch off.

Standard Voltage:

11 to 14 V

(b) Check the connection of the negative (-) and positive ( ) auxiliary battery terminals.

OK:

The terminals are connected securely and there is no contact problem.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

4.	READ VALUE USING GTS

(a) Perform the Health Check using the GTS.

(b) Perform the following steps when the data setting screen is displayed.

(1) Select the systems for which to perform Health Check and check for time stamp data.

Selectable items:

Powertrain
Chassis
Body
Store All Data

HINT:

The hybrid system performs control and intercommunication with other systems, so check and record the DTCs for all systems.

HINT:

If "Yes" is not selected, time stamp data will not be stored.

(d) Check for DTC and Toyota Prius Vehicle Control History (RoB) code output.

If an abnormality judgment flag has not been output during the current trip, perform the inspection for simulation method.

If the malfunction symptoms are not reproduced, it can be judged that the condition has returned to normal. GTS Display

Current / Confirmed	Pending	History	Test Failed	5 digits DTC	7 digits DTC
x				Shows the malfunction judgment results during the current trip.	Shows the malfunction judgment results during the current trip.
		x		Shows the malfunction judgment results up to now.	-
	x			Shows the malfunction judgment results up to now.	Shows the malfunction judgment results up to now.
x			x	-	Shows the malfunction judgment results during the current trip.

Result	Proceed to
DTCs are output.	A
Toyota Prius Vehicle Control History (RoB) code is output, but DTC is not output.	B
DTC is not output and Vehicle Control History (RoB) code is not output, but malfunction symptoms are reproduced.	C

GO TO Toyota Prius Vehicle CONTROL HISTORY (RoB)

GO TO PROBLEM SYMPTOMS TABLES

5.	GO TO DTC CHART

Referring to the DTC chart, perform troubleshooting according to the applicable code.

Hybrid control system
Click here
Motor Generator control system
Click here
Hybrid battery system
Click here

6.	ADJUST AND/OR REPAIR

CONDUCT CONFIRMATION TEST

(a) Clear the DTCs.

(b) Then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

For details, refer to the confirmation driving pattern for the relevant DTC diagnostic procedure.

Utility

UTILITY

NOTICE:

"Maintenance Required for Traction Battery at Your Dealer" is displayed, perform "Battery Diagnosis" to diagnose the extent of deterioration of each HV battery cell.
"Maintenance Required for Traction Battery at Your Dealer" is cleared after "Battery Diagnosis" are performed and "There is no need to replace HV supply battery assembly." is displayed.
After the "Maintenance Required for Traction Battery at Your Dealer" is displayed, if the traction battery is used continually without performing "Battery Diagnosis" for a few weeks*, use of the HV battery (input/output voltage) will be limited. If it is used more, the ignition switch ON (READY) operation will be disabled.
*: Timing may vary depending on Toyota Prius vehicle usage.
If the ignition switch cannot be turned to ON (READY), perform "Temporary Vehicle Start Up", "Battery Diagnosis".

HINT:

If "Maintenance Required for Traction Battery at Your Dealer" is displayed, .

Purpose

Utility Items (GTS Display)	Main Purpose	Control Description
All Readiness	Check whether or not DTC judgment has been completed.	-
Diagnosis Related Information	Confirm the diagnosis related information.	-
Battery Diagnosis	Discharge the HV battery and diagnose the extent of deterioration of each HV supply stack sub-assembly based on the SOC.	-
Battery Status Info Update	Initialize the HV battery age information.	-
Temporary Toyota Prius Vehicle Start Up	Temporarily enable the ignition switch on (Ready) operation which has been disabled due to continual usage of the vehicle without performing battery diagnosis.	-
HV/EV Battery Thermal Keep Control Mode Setting	Prevent HV battery from freezing.	-
High Voltage Fuse Accumulated Load History Reset	Initialize the load history of the high voltage fuse.

ALL READINESS

HINT:

With "All Readiness", you can check whether or not the DTC judgment has been completed by using the GTS.
You should check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.

(a) Clear the DTCs even if no DTCs are stored.

(b) Turn the ignition switch off and wait for at least 2 minutes.

(d) Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.

Powertrain > HV Battery > Utility

Tester Display
All Readiness

(e) Input the DTCs to be confirmed.

(f) Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform the driving pattern
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

(g) Turn the ignition switch off.

DIAGNOSIS RELATED INFORMATION

(a) Check for diagnosis related information.

(1) Check the Diagnosis Related Information, and then write them down.

Powertrain > HV Battery > Utility

Tester Display
Diagnosis Related Information

(b) Clear diagnosis related information.

NOTICE:

Clearing the DTCs will also clear the diagnosis related information.

(1) Clear the DTCs.

(2) Turn the ignition switch off.

BATTERY DIAGNOSIS

NOTICE:

Do not perform battery diagnosis while the hybrid system light is illuminated.
Perform battery diagnosis with the HV battery installed correctly.
Do not perform battery diagnosis while changing from inspection mode to another mode.
Make sure to turn the ignition switch off after battery diagnosis to prevent the auxiliary battery from being discharged.
If the SOC (state of charge) learning has not been performed*1, perform battery diagnosis after plug-in charging the Toyota Prius vehicle as specified.
- *1: Refer to "Procedure when Battery Diagnosis is Suspended".

(a) Turn the ignition switch off and wait for 2 minutes or more.

(b) Turn the ignition switch to ON.

Powertrain > HV Battery > Utility

Tester Display
Battery Diagnosis

(d) Check items on the display and press "Next".

(e) The screen transitions to the next screen and "Now diagnosing" is displayed.

HINT:

"Progress" is displayed as a reference to the estimated time to complete the diagnosis.
To suspend battery diagnosis, press "Exit" and turn the ignition switch off.

(f) When battery diagnosis is complete, the result will be displayed.

(g) Check the diagnosis result.

GTS Display	Diagnosis Result	After performing diagnosis
There is no need to replace the battery. Be sure to refer to the repair manual for procedures to take after this.	Normal	Perform "Battery Status Info Update".
Replace the HV supply stack sub-assemblies listed below.	Replace	Replace the listed HV supply stack sub-assemblies.

HINT:

If "Maintenance Required for Traction Battery at Your Dealer" is displayed on the multi-information display, the message will not be cleared even after it is determined that "There is no need to replace battery". It can be cleared only after performing "Battery Status Info Update".
If the listed HV supply stack sub-assemblies are replaced, perform "Battery Status Info Update" after replacing them.

(h) Turn the ignition switch off.

NOTICE:

Make sure to turn the ignition switch off after battery diagnosis to prevent the auxiliary battery from being discharged.

(i) When the battery diagnosis is suspended because the diagnosis conditions are not met anymore, the reasons of suspension are displayed on the GTS. Perform "Battery Diagnosis" after checking the causes and troubleshoot the suspected area in accordance with instructions in the "Procedure when battery diagnosis is suspended" table.

Procedure when battery diagnostic is suspended

GTS Display	Reason for Diagnosis Suspension (Related Condition)	Procedure
007	Shift state park (P) is not selected.	Push the P position switch (parking switch) to select park (P).
008	HV battery connection malfunction	Confirm the connection condition of the HV battery.
012	Time-out	If the ignition switch is turned off by the time-out function, perform "Battery Diagnosis" again.
013	Low auxiliary battery voltage	Inspect the auxiliary battery and DC/DC converter function.
014	HV battery malfunction	Check for HV battery system related DTCs and perform troubleshooting. After checking that the master warning has turned off, perform "Battery Diagnosis" again.
016	HV battery stack high voltage circuit connection malfunction
001 / 006 / 009 / Communication error	The ignition switch was turned off or a GTS communication error occurred.	After checking that the connector of the GTS is not disconnected from the DLC3, perform "battery diagnosis" again.
Other than abave	Full charge capacity information is not updated	Lower the SOC (state of charge) of the HV battery by driving the Toyota Prius vehicle in EV mode until the mode changes to HV mode. Make a note of the Data List items from "Hybrid/EV Battery Temperature 1" to "Hybrid/EV Battery Temperature 20". If the lowest measured battery temperature is 10°C (50°F) or lower, drive the vehicle until the temperature exceeds 15°C (59°F). If "Maintenance Required for Traction Battery at Your Dealer" is displayed on the multi-information display and the hybrid Toyota Prius vehicle system cannot be started, perform "Temporary Vehicle Start Up" and drive the vehicle. Turn the ignition switch off and wait for 1 hour and 30 minutes or more. Perform plug-in charging. NOTICE: Do not use the charging timer function. After plug-in charging, wait for 35 minutes or more, then turn the ignition switch to ON or ON (READY). (Do not turn the ignition switch to ON or ON (READY) for at least 35 minutes after plug-in charging. If the Toyota Prius vehicle is not fully charged, perform the procedure from step 1 again.) Leave the vehicle with the ignition switch ON or ON (READY) for 10 minutes or more, turn the ignition switch off, and then perform battery diagnosis.

BATTERY STATUS INFO UPDATE

HINT:

If the HV supply battery assembly or an HV supply stack sub-assembly has been replaced, make sure to perform "Battery Status Info Update" to initialize the HV battery age information stored in the battery ECU assembly and turn off the light on the combination meter assembly.

(a) Turn the ignition switch off and wait for 2 minutes or more.

(b) Turn the ignition switch to ON.

Powertrain > HV Battery > Utility

Tester Display
Battery Status Info Update

(d) Turn the ignition switch off.

TEMPORARY Toyota Prius Vehicle START UP

NOTICE:

Do not perform temporary vehicle start up while the master warning is illuminated.
Perform only when "Vehicle Start Disabled Until Traction Battery Inspected" is displayed on the multi-information display and the vehicle cannot be started.
"Toyota Prius Vehicle Start Disabled Until Traction Battery Inspected" is not cleared even after "Temporary Vehicle Start Up" is performed.

(a) Enter the following menus: Powertrain / HV Battery / Utility / Temporary Vehicle Start Up

Powertrain > HV Battery > Utility

Tester Display
Temporary Toyota Prius Vehicle Start Up

NOTICE:

If once the ignition switch is turned to ON (READY) while depressing the brake pedal, "Temporary Vehicle Start Up" is not possible. Retry after turning the ignition switch off.

(b) Check items on the display and press "Next".

(d) The screen transitions to the next screen and "Now the Toyota Prius vehicle is ready to start." is displayed.

HINT:

If the ignition switch is turned off after "Temporary Vehicle Start Up", the vehicle will not be able to start again.
The GTS can be disconnected after turning the ignition switch to ON (READY).

(e) Turn the ignition switch to ON (READY).

(f) When the condition to perform "Temporary Toyota Prius Vehicle Start Up" is not met, the reasons for suspension are displayed on the GTS. Perform "Temporary Vehicle Start Up" again after checking the causes and troubleshooting the suspected area in accordance with instructions in the "Procedure when "Temporary Vehicle Start Up" is suspended" table.

Procedure when "Temporary Toyota Prius Vehicle Start Up" is suspended

GTS Display	Reason for Temporary Vehicle Start Up Suspension (Related Condition)	Procedure
Temporary Toyota Prius Vehicle Start Up has failed. Confirm the following condition.	GTS communication error	After checking that the connector of the GTS is not disconnected and the ignition switch is ON, perform "Temporary Vehicle Start Up" again.

GTS Display

Reason for Temporary Vehicle Start Up Suspension

(Related Condition)

Procedure

Temporary Toyota Prius Vehicle Start Up has failed. Confirm the following condition.

GTS communication error

After checking that the connector of the GTS is not disconnected and the ignition switch is ON, perform "Temporary Vehicle Start Up" again.

HV/EV Battery Thermal Keep Control Mode Setting

HINT:

HV battery may be frozen in Canada, Alaska and Greenland. As a result, the HV battery may become excessively weak and the engine may not be able to be started. By setting "HV/EV Battery Thermal Keep Control Mode", it is possible to warm the HV battery and maintain its current temperature in order to prevent it from becoming excessively weak.

When this mode is set to ON, the timer charging timer settings are canceled at temperatures of -10°C (14°F) or lower, and charging will begin immediately when the charging cable is connected to the Toyota Prius vehicle. Therefore, never set this mode to ON in any region other than the above.

HV/EV Battery Thermal Keep Control Mode Setting

Purpose	Condition	Operation
Prevent HV battery from freezing	Ambient temperature is -10°C (14°F) or lower Charging cable is connected to Toyota Prius vehicle	Begins to warm the HV battery to maintain its current temperature when the ambient temperature drops to -10°C (14°F) or lower when the charging cable is connected to the vehicle. To prevent the HV battery from freezing when a charging start time is set, when HV/EV Battery Thermal Keep Mode is enabled, the charging timer will be disabled and charging will begin immediately when the charging cable is connected to the Toyota Prius vehicle.

In extremely cold areas, before delivering a new vehicle or after replacing the battery ECU assembly, it is necessary to enable Hybrid Battery Thermal Keep Control Mode using the GTS.

NOTICE:

When not in an extremely cold area, as the temperature is not likely to drop low enough to cause the HV battery to become excessively weak and the engine to not be able to be started, do not enable Hybrid Battery Thermal Keep Control Mode.

(a) Enter the following menus: Powertrain / HV Battery / Utility / HV/EV Battery Thermal Keep Control Mode Setting.

Powertrain > HV Battery > Utility

Tester Display
HV/EV Battery Thermal Keep Control Mode Setting

(b) Check items on the display and press "Next".

(d) Select "ON", and then press "Next".

(e) Check that "HV/EV Battery Thermal Keep Control Mode is complete." is displayed.

Terminals Of Ecu

TERMINALS OF ECU

Battery ECU Assembly

Connector code	Terminal No.	Symbol	Terminal Description
x1	1	VG0	Power source for battery voltage sensor 0
	2	VG1	Power source for battery voltage sensor 1
	3	-	-
	4	-	-
	5	-	-
	6	-	-
	7	VBS0	Stack selection signal 0
	8	VBS1	Stack selection signal 1
	9	VBS2	Stack selection signal 2
	10	VBSG	Ground for shield
	11	VDEN	Voltage sensor circuit control signal
	12	-	-
	13	-	-
	14	-	-
	15	GGB0	Surge protection circuit
	16	-	-
	17	-	-
	18	VLKB	Isolation sensor signal
	19	-	-
	20	VBB0	Stack voltage sensor
	21	-	-
	22	GBB0	Stack voltage sensor ground
	23	GDV0	Battery voltage sensor 0 ground
	24	GDV1	Battery voltage sensor 1 ground
	25	VHS0	Isolation sensor signal
	26	VHS1	Relay drive A Signal
	27	SCOH	ECU - battery voltage sensor communication line
	28	SCOL	ECU - battery voltage sensor communication line
	29	SCIH	ECU - battery voltage sensor communication line
	30	SCIL	ECU - battery voltage sensor communication line
	31	-	-
	32	-	-
	33	-	-
	34	-	-
	35	-	-
	36	-	-
	37	VLKG	Isolation sensor ground
	38	-	-
x2	1	TRF0	Air conditioning thermistor assembly (Duct Inlet 1)
	2	GRF0	Air conditioning thermistor assembly (Duct Inlet 1) ground
	3	-	-
	4	-	-
	5	-	-
	6	-	-
	7	GRF1	Air conditioning thermistor assembly (Duct Outlet 1) ground
	8	TRF1	Air conditioning thermistor assembly (Duct Outlet 1)
	9	-	-
	10	-	-
	11	-	-
	12	-	-
	13	-	-
	14	-	-
	15	-	-
	16	-	-
	17	-	-
	18	-	-
	19	-	-
	20	-	-
	21	-	-
	22	-	-
	23	-	-
	24	-	-
	25	-	-
	26	-	-
	27	-	-
	28	-	-
	29	-	-
	30	-	-
x5	1	-	-
	2	-	-
	3	TBH0	HV battery heater temperature sensor 0
	4	GBH0	HV battery heater temperature sensor 0 ground
	5	TBH1	HV battery heater temperature sensor 1
	6	GBH1	HV battery heater temperature sensor 1 ground
	7	-	-
	8	-	-
	9	-	-
	10	-	-
	11	-	-
	12	-	-
	13	-	-
	14	-	-
	15	-	-
	16	-	-
	17	-	-
	18	-	-
	19	-	-
	20	-	-
	21	-	-
x4	1	-	-
	2	-	-
	3	-	-
	4	VIB	Power source for battery current sensor
	5	VAS0	Power source for air conditioning pressure sensor
	6	CHRG	CHRG relay operation signal
	7	CHRP	CHRP relay operation signal
	8	CHRB	CHRB relay operation signal
	9	-	-
	10	-	-
	11	-	-
	12	BHRB	HV battery heater relay signal
	13	BHRG	HV battery heater relay ground
	14	GIB	Battery current sensor power source ground
	15	IBL	Battery current sensor signal (IBL)
	16	IB0	Battery current sensor signal (IB0)
	17	IB1	Battery current sensor signal (IB1)
	18	GAS0	Air conditioning pressure sensor ground
	19	AS0	Air conditioning pressure sensor signal
	20	SMA0	Magnet valve signal
	21	SMB0	Magnet valve signal
	22	SMC0	Magnet valve signal
	23	SMD0	Magnet valve signal
	24	-	-
	25	-	-
	26	-	-
	27	-	-
	28	-	-
	29	-	-
	30	-	-
x3	1	AM	Constant power source
	2	-	-
	3	WCEN	Charging relay operation signal
	4	-	-
	5	IGCT	Power source
	6	-	-
	7	CA1H	CAN communication line (battery local bus)
	8	CA1L	CAN communication line (battery local bus)
	9	-	-
	10	C2HB	CAN communication line (powertrain local bus)
	11	C2LB	CAN communication line (powertrain local bus)
	12	CA2H	CAN communication line (powertrain bus)
	13	CA2L	CAN communication line (powertrain bus)
	14	-	-
	15	-	-
	16	-	-
	17	-
	18	IGC2	Power source
	19	-	-
	20	-	-
	21	-	-
	22	-	-
	23	-	-
	24	-	-
	25	GND	Ground
	26	GND1	Ground
	27	GND2	Ground

Battery Voltage Sensor

Connector code	Terminal No.	Symbol	Terminal Description
x6	1	VLKB	Isolation sensor signal
	2	-	-
	3	-	-
	4	-	-
	5	GBB0	Surge protection circuit
	6	-	-
	7	-	-
	8	-	-
	9	-	-
	10	SCIH	battery voltage sensor - battery ECU communication line
	11	SCOH	battery voltage sensor - battery ECU communication line
	12	VHS0	Isolation sensor signal
	13	VBS2	Stack selection signal 2
	14	VBS1	Stack selection signal 1
	15	VBSG	Ground for shield
	16	GDV0	Ground for battery voltage sensor 0
	17	-	-
	18	VG0	Power source for battery voltage sensor 0
	19	-	-
	20	-	-
	21	VBB0	Stack voltage sensor
	22	-	-
	23	-	-
	24	-	-
	25	VLKG	Isolation sensor ground
	26	-	-
	27	-	-
	28	-	-
	29	GGB0	Surge protection circuit
	30	-	-
	31	-	-
	32	-	-
	33	SCIL	battery voltage sensor - battery ECU communication line
	34	SCOL	battery voltage sensor - battery ECU communication line
	35	VHS1	Relay drive A Signal
	36	VDEN	Voltage sensor circuit control signal
	37	VBS0	Stack selection signal 0
	38	GDV1	Battery voltage sensor 1 ground
	39	-	-
	40	VG1	Power source for battery voltage sensor 1
z18	1	VA3	HV Battery Cell Voltage
	2	-	-
	3	VA4	HV Battery Cell Voltage
	4	VA2	HV Battery Cell Voltage
	5	VA1	HV Battery Cell Voltage
	6	GA0	HV Battery Cell Voltage
	7	TB4	HV battery temperature sensor 4
	8	GB4	HV battery temperature sensor 4 ground
	9	TB3	HV battery temperature sensor 3
	10	GB3	HV battery temperature sensor 3 ground
	11	TB2	HV battery temperature sensor 2
	12	GB2	HV battery temperature sensor 2 ground
	13	-	-
	14	-	-
	15	-	-
	16	-	-
	17	-	-
	18	GB1	HV battery temperature sensor 1 ground
	19	TB1	HV battery temperature sensor 1
	20	GB0	HV battery temperature sensor 0 ground
	21	TB0	HV battery temperature sensor 0
z17	1	VA21	HV Battery Cell Voltage
	2	VA20	HV Battery Cell Voltage
	3	VA9	HV Battery Cell Voltage
	4	VA8	HV Battery Cell Voltage
	5	VA23	HV Battery Cell Voltage
	6	VA22	HV Battery Cell Voltage
	7	VA19	HV Battery Cell Voltage
	8	VA17	HV Battery Cell Voltage
	9	VA16	HV Battery Cell Voltage
	10	VA15	HV Battery Cell Voltage
	11	VA14	HV Battery Cell Voltage
	12	GA1	HV Battery Cell Voltage
	13	VA12	HV Battery Cell Voltage
	14	VA11	HV Battery Cell Voltage
	15	VA10	HV Battery Cell Voltage
	16	VA7	HV Battery Cell Voltage
	17	VA6	HV Battery Cell Voltage
	18	VA24	HV Battery Cell Voltage
	19	-	-
	20	VA18	HV Battery Cell Voltage
	21	-	-
	22	-	-
	23	VA13	HV Battery Cell Voltage
	24	-	-
	25	-	-
	26	-	-
	27	VA5	HV Battery Cell Voltage
z20	1	VA32	HV Battery Cell Voltage
	2	VA31	HV Battery Cell Voltage
	3	GB5	HV battery temperature sensor 5 ground
	4	TB5	HV battery temperature sensor 5
	5	VA34	HV Battery Cell Voltage
	6	VA33	HV Battery Cell Voltage
	7	VA30	HV Battery Cell Voltage
	8	VA28	HV Battery Cell Voltage
	9	VA27	HV Battery Cell Voltage
	10	VA26	HV Battery Cell Voltage
	11	VA25	HV Battery Cell Voltage
	12	GA2	HV Battery Cell Voltage
	13	TB9	HV battery temperature sensor 9
	14	GB9	HV battery temperature sensor 9 ground
	15	TB7	HV battery temperature sensor 7
	16	GB7	HV battery temperature sensor 7 ground
	17	TB6	HV battery temperature sensor 6
	18	VA35	HV Battery Cell Voltage
	19	-	-
	20	VA29	HV Battery Cell Voltage
	21	-	-
	22	-	-
	23	-	-
	24	-	-
	25	TB8	HV battery temperature sensor 8
	26	GB8	HV battery temperature sensor 8 ground
	27	GB6	HV battery temperature sensor 6 ground
z19	1	VA47	HV Battery Cell Voltage
	2	VA37	HV Battery Cell Voltage
	3	VA48	HV Battery Cell Voltage
	4	VA46	HV Battery Cell Voltage
	5	VA45	HV Battery Cell Voltage
	6	VA44	HV Battery Cell Voltage
	7	VA43	HV Battery Cell Voltage
	8	VA42	HV Battery Cell Voltage
	9	VA41	HV Battery Cell Voltage
	10	VA40	HV Battery Cell Voltage
	11	VA39	HV Battery Cell Voltage
	12	VA38	HV Battery Cell Voltage
	13	GA3	HV Battery Cell Voltage
	14	-	-
	15	-	-
	16	-	-
	17	-	-
	18	-	-
	19	-	-
	20	-	-
	21	VA36	HV Battery Cell Voltage
z22	1	VA55	HV Battery Cell Voltage
	2	VA53	HV Battery Cell Voltage
	3	VA51	HV Battery Cell Voltage
	4	-	-
	5	TB11	HV battery temperature sensor 11
	6	VA56	HV Battery Cell Voltage
	7	VA54	HV Battery Cell Voltage
	8	VA52	HV Battery Cell Voltage
	9	VA50	HV Battery Cell Voltage
	10	VA49	HV Battery Cell Voltage
	11	GA4	HV Battery Cell Voltage
	12	GB14	HV battery temperature sensor 14 ground
	13	TB14	HV battery temperature sensor 14
	14	GB13	HV battery temperature sensor 13 ground
	15	TB13	HV battery temperature sensor 13
	16	GB12	HV battery temperature sensor 12 ground
	17	TB12	HV battery temperature sensor 12
	18	GB11	HV battery temperature sensor 11 ground
	19	TB10	HV battery temperature sensor 10
	20	-	-
	21	-	-
	22	-	-
	23	-	-
	24	-	-
	25	-	-
	26	-	-
	27	-	-
	28	-	-
	29	-	-
	30	GB10	HV battery temperature sensor 10 ground
z21	1	VA70	HV Battery Cell Voltage
	2	VA69	HV Battery Cell Voltage
	3	VA60	HV Battery Cell Voltage
	4	VA59	HV Battery Cell Voltage
	5	VA72	HV Battery Cell Voltage
	6	VA71	HV Battery Cell Voltage
	7	VA68	HV Battery Cell Voltage
	8	VA67	HV Battery Cell Voltage
	9	VA66	HV Battery Cell Voltage
	10	VA65	HV Battery Cell Voltage
	11	VA64	HV Battery Cell Voltage
	12	VA63	HV Battery Cell Voltage
	13	VA62	HV Battery Cell Voltage
	14	VA61	HV Battery Cell Voltage
	15	GA5	HV Battery Cell Voltage
	16	VA58	HV Battery Cell Voltage
	17	VA57	HV Battery Cell Voltage
	18	-	-
	19	-	-
	20	-	-
	21	-	-
	22	-	-
	23	-	-
	24	-	-
	25	-	-
	26	-	-
	27	-	-

Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) The battery ECU assembly has a self-diagnosis system. If the computer, hybrid control system, or a component is not working properly, the ECU records the conditions that relate to the fault. The ECU also illuminates the master warning in the combination meter assembly and provides other appropriate messages on the multi-information display, such as the HV system warning message, HV battery warning message, or discharge warning message.

When troubleshooting OBD II (On-Board Diagnostics) Toyota Prius vehicles, the GTS (complying with SAE J1978) must be connected to the DLC3 (Data Link Connector 3) of the vehicle. Various data in the vehicle ECM (Engine Control Module) can then be read.
OBD II regulations require that the vehicle's on-board computer illuminates the MIL (Malfunction Indicator Lamp) on the instrument panel when the computer detects a malfunction in:
1. The emission control system components.
2. The powertrain control components (which affect Toyota Prius vehicle emissions).
3. The computer itself.
  In addition, the applicable DTCs prescribed by SAE J2012 are recorded in the battery ECU assembly memory. If the malfunction does not recur in 3 consecutive trips, the MIL turns off automatically but the DTCs remain recorded in the battery ECU assembly memory.
To check for DTCs, connect the GTS to the DLC3. The GTS displays DTCs, freeze frame data, and a variety of hybrid control system data. The DTCs and freeze frame data can be cleared with the GTS. In order to enhance the OBD function on Toyota Prius vehicles and develop the off-board diagnosis system, Controller Area Network (CAN) communication is used in this system. CAN is a network which uses a pair of data transmission lines spanning multiple computers and sensors. It allows for high speed communications between the systems and simplification of the wire harness connections.

2 TRIP DETECTION LOGIC

Following is the description for storage of DTC using "2 trip detection logic".

When a malfunction is first detected, the malfunction is temporarily stored in the battery ECU assembly memory (1st trip). If the same malfunction is detected during the next drive cycle, the MIL is illuminated (2nd trip).

FREEZE FRAME DATA

The battery ECU assembly records Toyota Prius vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, as well as other data recorded at the time of a malfunction.

AUXILIARY BATTERY VOLTAGE

Standard Voltage:

Switch Condition	Specified Condition
Ignition switch ON	11 to 14 V

If voltage is below 11 V, replace or recharge the auxiliary battery.
NOTICE:
- After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
  Click here
- When disconnecting and reconnecting the auxiliary battery.
  HINT:
  
  When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
  
  Click here

MIL (Malfunction Indicator Lamp)

(a) The MIL is illuminated when the ignition switch is first turned to ON, before the READY light comes on.

(b) When the READY indicator turns on, the MIL should turn off. If the MIL remains illuminated, the diagnosis system has detected a malfunction or abnormality in the system.

HINT:

If the MIL is not illuminated when the ignition switch is first turned to ON, check the MIL circuit.

for SFI System: Click here

Dtc Check / Clear

DTC CHECK / CLEAR

CHECK FOR DTCS

(a) Check the DTCs and freeze frame data, and then write them down.

Powertrain > HV Battery > Trouble Codes

(b) Check the details of the DTCs.

Display Item	Description
Test Failed	Shows the malfunction judgment results during the current trip.
Pending	Shows the malfunction judgment results up to now. (Indicates the possibility of a malfunction when no DTC is confirmed.)
Confirmed	Shows the DTCs confirmed up to now. (The number of current trips differs for each DTC.)

A pending DTC is a DTC that is stored in the battery ECU assembly during the 1st trip when the 2 trip detection logic is used.
Freeze frame data is stored for each of the latest result DTCs, pending DTCs and confirmed DTCs.

(1) Check items on the display and press "Next".

Powertrain > HV Battery > Utility

Tester Display
Check Mode

NOTICE:

All the stored DTCs and freeze frame data are cleared if the battery ECU assembly is changed from normal mode to check mode. Before changing modes, always check and note any DTCs and freeze frame data.
Changing from normal mode to check mode function is not available when the ignition switch is turned to ON (READY).
If a DTC is stored, check and note the DTC and freeze frame data following the GTS display, then change from normal mode to check mode.

CHECK FREEZE FRAME DATA

(a) If a DTC is present, select it in order to display its freeze frame data.

(b) Read the freeze frame data recorded when the DTC was stored.

CHECK TIME STAMP

HINT:

By checking Time Stamp, the time and order in which DTCs were stored in an ECU can be checked.

(a) Enter the following menus: Health Check.

(b) Perform the following steps when the data setting screen is displayed.

Selectable items:

Powertrain
Chassis
Body
Store All Data

(d) Select "Yes" when "Do you want to store time stamp data?" is displayed.

HINT:

If "Yes" is not selected, time stamp data will not be stored.

(e) After Health Check has completed, select "Time Stamp Data" to display the Time Stamp screen.

(f) Select the desired system from the drop-down list on the bottom of the Time Stamp screen.

(g) Check the order and time which DTCs were stored for the selected system.

CHECK FOR DTCS (SYSTEMS EXCEPT BATTERY ECU ASSEMBLY)

HINT:

The battery ECU assembly maintains communication with other computers, including the electric Toyota Prius vehicle charger assembly, the ECM, and hybrid vehicle control ECU. Therefore, if the battery ECU assembly outputs a warning, it is necessary to check and record the DTCs of all systems.

(a) If DTCs are stored, check the relevant systems.

HINT:

If DTCs for the CAN communication system are stored in addition to other DTCs, first troubleshoot and repair any malfunctions in the CAN communication system.

CLEAR DTCS

NOTICE:

Clearing the DTCs will also clear the freeze frame data.

(a) Enter the following menus: Powertrain / HV battery / Trouble Codes.

Powertrain > HV Battery > Trouble Codes

(b) Clear DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

OUTLINE

After clearing current DTCs using the GTS (or by disconnecting the cable from the negative (-) auxiliary battery terminal), permanent DTCs can be cleared when the universal trip is performed and then the system is determined to be normal for the relevant DTCs. The driving pattern to obtain a normal judgment is described under the "Confirmation Driving Pattern" for the respective DTC.
To clear permanent DTCs, all of the following conditions must be are met:
- There is a history that universal trip driving was performed.
- The Toyota Prius vehicle has been judged as normal for 2 trips. (Normal judgment does not have to be performed in 2 consecutive trip, but normal judgment should occur in the latest trip.)
- No malfunctions are detected.

CLEAR PERMANENT DTC

(a) Enter the following menus: Powertrain / HV Battery / Trouble Codes.

Powertrain > HV Battery > Trouble Codes

HINT:

If "YES" is displayed for the value of "PERMANENT" at the top right of the GTS screen, permanent DTCs are stored.

(b) Select the "Generic" tab.

HINT:

If permanent DTCs are not output, it is not necessary to continue this procedure.

(d) Clear the DTCs.

Powertrain > HV Battery > Clear DTCs

NOTICE:

Do not clear the DTCs or disconnect the cable from the auxiliary battery terminal after performing this step.

(e) Perform the universal trip.

CAUTION:

When performing the driving pattern, obey all speed limits and traffic laws.

HINT:

The universal trip driving pattern and normal judgment procedure can be performed consecutively in the same driving cycle.

(1) Turn the ignition switch to ON (READY) and wait for 30 seconds or more.

(2) Drive the Toyota Prius vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more.

HINT:

It is possible to complete the drive pattern even if the vehicle decelerates to less than 40 km/h (25 mph) during the driving cycle provided that the vehicle is driven at 40 km/h (25 mph) or more for a total of 5 minutes.

(3) Allow 10 minutes or more to elapse from the time the ignition switch turned to ON (READY).

(f) Turn the ignition switch off and wait for 2 minutes or more.

(g) Perform the normal judgment procedure in the respective confirmation driving pattern of each output DTC.

HINT:

Do not turn the ignition switch off by mistake during this step.

(h) With ignition switch ON (READY) and wait for 5 seconds or more.

(i) Turn the ignition switch off and wait for 2 minutes or more.

(j) Turn the ignition switch to ON.

(k) Enter the following menus: Powertrain / HV Battery / Trouble Codes.

Powertrain > HV Battery > Trouble Codes

(l) Check that the permanent DTCs have been cleared.

HINT:

If permanent DTCs are not output, it is not necessary to continue this procedure.

(m) Perform the normal judgment procedure in the respective confirmation driving pattern of each output DTC.

HINT:

Do not turn the ignition switch off by mistake during this step.

(n) With ignition switch ON (READY) and wait for 5 seconds or more.

(o) Turn the ignition switch off and wait for 2 minutes or more.

(p) Turn the ignition switch to ON.

(q) Enter the following menus: Powertrain / HV Battery / Trouble Codes.

Powertrain > HV Battery > Clear DTCs

(r) Check that the permanent DTCs have been cleared.

HINT:

Permanent DTCs will be cleared if a normal judgment is obtained during 3 consecutive driving cycles with the MIL illuminated.
The permanent DTCs are cleared when the universal trip is completed.
If permanent DTCs are still present after the universal trip, turn the ignition switch off and wait for a while. Then, confirm that the permanent DTCs have been cleared.

Freeze Frame Data

FREEZE FRAME DATA

FREEZE FRAME DATA

HINT:

The battery ECU assembly records vehicle and driving condition information as freeze frame data the moment a DTC is stored. It can be used for estimating or duplicating the vehicle conditions that were present when the malfunction occurred. To confirm the details of the hybrid battery system, check the detailed information for the DTC information code in the Data List (INF code).

(a) Select a DTC in order to display its freeze frame data.

(b) Check the freeze frame information recorded with the DTC.

Powertrain > HV Battery

Tester Display
Toyota Prius Vehicle Speed
Target Engine Power
Engine Speed
Calculate Load
Coolant Temperature
Engine Run Time
Accelerator Position
Throttle Position Sensor No.1 Voltage %
Shift Position
Atmospheric Pressure
Ambient Temperature
BATT Voltage
Smoothed Value of BATT Voltage
Warmup Cycle Cleared DTC
Distance from DTC Cleared
Time after DTC Cleared
Running Time from MIL ON
Total Distance Traveled
Total Distance Traveled - Unit
MIL ON Run Distance
IGB Signal Status
IG2 Signal Status
Ready Signal
Ready ON Prevention Status
IG OFF Time of Last Trip
HV/EV Activate Condition
SMRG Control Status
SMRB Control Status
SMRP Control Status
WIN Control Limit Power
WOUT Control Limit Power
A/C Consumption Power
A/C System Status
Stop Light Switch
Airbag Status (Collision)
Airbag Status (Safing)
Airbag Status (Normal)
Generator Revolution
Target Generator Torque
Motor Revolution
Target Motor Torque
Request Motor Regenerative Brake Torque
Motor Regenerate Brake Execution Torque
Generator Carrier Frequency
Motor Carrier Frequency
Boosting Converter Carrier Frequency
VL-Voltage before Boosting
VH-Voltage after Boosting
Boost Ratio
Hybrid/EV Battery SOC
Delta SOC
Hybrid/EV Battery SOC just after IG-ON
Hybrid/EV Battery Maximum SOC
Hybrid/EV Battery Minimum SOC
Hybrid/EV Battery Voltage
Hybrid/EV Battery Current
Hybrid/EV Battery Current for Hybrid/EV Battery Control
Hybrid/EV Battery Current for Hybrid/EV Battery Control (Sub)
Hybrid/EV Battery Current for Driving Control
Hybrid/EV Battery Current (IBL)
Hybrid/EV Battery Current Sensor Voltage for Hybrid/EV Battery Control
Hybrid/EV Battery Current Sensor Voltage for Hybrid/EV Battery Control (Sub)
Hybrid/EV Battery Current Sensor Voltage (IBL)
Hybrid/EV Battery Control Mode
Hybrid/EV Battery Current Sensor Power Supply Voltage
Hybrid/EV Battery Current Sensor Offset Learning Value
Hybrid/EV Battery Current Sensor Offset
Hybrid/EV Battery Current Sensor Offset Learning Value (Sub)
Hybrid/EV Battery Current Sensor Offset (Sub)
Hybrid/EV Battery Current Sensor Offset Learning Value (IBL)
Hybrid/EV Battery Current Sensor Offset (IBL)
Short Wave Highest Value
Hybrid/EV Battery Cell Circuit Open Information for Monitoring IC 1
Hybrid/EV Battery Cell Circuit Open Information for Monitoring IC 2
Hybrid/EV Battery Cell Circuit Open Information for Monitoring IC 3
Lost Communication with Hybrid/EV Battery Monitoring IC
Hybrid/EV Battery Monitoring IC 1 Internal Malfunction (Determinable)
Hybrid/EV Battery Monitoring IC 2 Internal Malfunction (Determinable)
Hybrid/EV Battery Monitoring IC 3 Internal Malfunction (Determinable)
Hybrid/EV Battery Monitoring IC Internal Malfunction (Unidentifiable)
Hybrid/EV Battery Monitoring IC 1 Power Supply Malfunction
Hybrid/EV Battery Monitoring IC 2 Power Supply Malfunction
Hybrid/EV Battery Monitoring IC 3 Power Supply Malfunction
Hybrid/EV Battery Monitoring IC 1 Cell Voltage Detection Malfunction
Hybrid/EV Battery Monitoring IC 2 Cell Voltage Detection Malfunction
Hybrid/EV Battery Monitoring IC 3 Cell Voltage Detection Malfunction
Hybrid/EV Battery Stack 1 Cell Average Voltage
Hybrid/EV Battery Stack 2 Cell Average Voltage
Hybrid/EV Battery Stack 3 Cell Average Voltage
Hybrid/EV Battery Block 1 Cell Average Voltage
Hybrid/EV Battery Block 2 Cell Average Voltage
Hybrid/EV Battery Block 3 Cell Average Voltage
Hybrid/EV Battery Cell Maximum Voltage Up to 1 trip before
Hybrid/EV Battery Cell Minimum Voltage Up to 1 trip before
Hybrid/EV Battery Cell 1 Voltage
Hybrid/EV Battery Cell 2 Voltage
Hybrid/EV Battery Cell 3 Voltage
Hybrid/EV Battery Cell 4 Voltage
Hybrid/EV Battery Cell 5 Voltage
Hybrid/EV Battery Cell 6 Voltage
Hybrid/EV Battery Cell 7 Voltage
Hybrid/EV Battery Cell 8 Voltage
Hybrid/EV Battery Cell 9 Voltage
Hybrid/EV Battery Cell 10 Voltage
Hybrid/EV Battery Cell 11 Voltage
Hybrid/EV Battery Cell 12 Voltage
Hybrid/EV Battery Cell 13 Voltage
Hybrid/EV Battery Cell 14 Voltage
Hybrid/EV Battery Cell 15 Voltage
Hybrid/EV Battery Cell 16 Voltage
Hybrid/EV Battery Cell 17 Voltage
Hybrid/EV Battery Cell 18 Voltage
Hybrid/EV Battery Cell 19 Voltage
Hybrid/EV Battery Cell 20 Voltage
Hybrid/EV Battery Cell 21 Voltage
Hybrid/EV Battery Cell 22 Voltage
Hybrid/EV Battery Cell 23 Voltage
Hybrid/EV Battery Cell 24 Voltage
Hybrid/EV Battery Cell 25 Voltage
Hybrid/EV Battery Cell 26 Voltage
Hybrid/EV Battery Cell 27 Voltage
Hybrid/EV Battery Cell 28 Voltage
Hybrid/EV Battery Cell 29 Voltage
Hybrid/EV Battery Cell 30 Voltage
Hybrid/EV Battery Cell 31 Voltage
Hybrid/EV Battery Cell 32 Voltage
Hybrid/EV Battery Cell 33 Voltage
Hybrid/EV Battery Cell 34 Voltage
Hybrid/EV Battery Cell 35 Voltage
Hybrid/EV Battery Cell 36 Voltage
Hybrid/EV Battery Cell 37 Voltage
Hybrid/EV Battery Cell 38 Voltage
Hybrid/EV Battery Cell 39 Voltage
Hybrid/EV Battery Cell 40 Voltage
Hybrid/EV Battery Cell 41 Voltage
Hybrid/EV Battery Cell 42 Voltage
Hybrid/EV Battery Cell 43 Voltage
Hybrid/EV Battery Cell 44 Voltage
Hybrid/EV Battery Cell 45 Voltage
Hybrid/EV Battery Cell 46 Voltage
Hybrid/EV Battery Cell 47 Voltage
Hybrid/EV Battery Cell 48 Voltage
Hybrid/EV Battery Cell 49 Voltage
Hybrid/EV Battery Cell 50 Voltage
Hybrid/EV Battery Cell 51 Voltage
Hybrid/EV Battery Cell 52 Voltage
Hybrid/EV Battery Cell 53 Voltage
Hybrid/EV Battery Cell 54 Voltage
Hybrid/EV Battery Cell 55 Voltage
Hybrid/EV Battery Cell 56 Voltage
Hybrid/EV Battery Cell 57 Voltage
Hybrid/EV Battery Cell 58 Voltage
Hybrid/EV Battery Cell 59 Voltage
Hybrid/EV Battery Cell 60 Voltage
Hybrid/EV Battery Cell 61 Voltage
Hybrid/EV Battery Cell 62 Voltage
Hybrid/EV Battery Cell 63 Voltage
Hybrid/EV Battery Cell 64 Voltage
Hybrid/EV Battery Cell 65 Voltage
Hybrid/EV Battery Cell 66 Voltage
Hybrid/EV Battery Cell 67 Voltage
Hybrid/EV Battery Cell 68 Voltage
Hybrid/EV Battery Cell 69 Voltage
Hybrid/EV Battery Cell 70 Voltage
Hybrid/EV Battery Cell 71 Voltage
Hybrid/EV Battery Cell 72 Voltage
Hybrid/EV Battery Temperature 1
Hybrid/EV Battery Temperature 2
Hybrid/EV Battery Temperature 3
Hybrid/EV Battery Temperature 4
Hybrid/EV Battery Temperature 5
Hybrid/EV Battery Temperature 6
Hybrid/EV Battery Temperature 7
Hybrid/EV Battery Temperature 8
Hybrid/EV Battery Temperature 9
Hybrid/EV Battery Temperature 10
Hybrid/EV Battery Temperature 11
Hybrid/EV Battery Temperature 12
Hybrid/EV Battery Temperature 13
Hybrid/EV Battery Temperature 14
Hybrid/EV Battery Temperature 15
Hybrid/EV Battery Temperature Sensor Voltage 1
Hybrid/EV Battery Temperature Sensor Voltage 2
Hybrid/EV Battery Temperature Sensor Voltage 3
Hybrid/EV Battery Temperature Sensor Voltage 4
Hybrid/EV Battery Temperature Sensor Voltage 5
Hybrid/EV Battery Temperature Sensor Voltage 6
Hybrid/EV Battery Temperature Sensor Voltage 7
Hybrid/EV Battery Temperature Sensor Voltage 8
Hybrid/EV Battery Temperature Sensor Voltage 9
Hybrid/EV Battery Temperature Sensor Voltage 10
Hybrid/EV Battery Temperature Sensor Voltage 11
Hybrid/EV Battery Temperature Sensor Voltage 12
Hybrid/EV Battery Temperature Sensor Voltage 13
Hybrid/EV Battery Temperature Sensor Voltage 14
Hybrid/EV Battery Temperature Sensor Voltage 15
Hybrid/EV Battery Cooling Fan Low Speed Request
Hybrid/EV Battery Heater 1 Temperature
Hybrid/EV Battery Heater 2 Temperature
Hybrid/EV Battery Heater 1 Temperature Sensor Voltage
Hybrid/EV Battery Heater 2 Temperature Sensor Voltage
Hybrid/EV Battery Heater Relay
Hybrid/EV Battery Cooling Request Level
Hybrid/EV Battery Cooling Status (A/C)
Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)
Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)
Hybrid/EV Battery Refrigerant Temperature Sensor Voltage (Duct Inlet 1)
Hybrid/EV Battery Refrigerant Temperature Sensor Voltage (Duct Outlet 1)
Hybrid/EV Battery Refrigerant Pressure 1
Hybrid/EV Battery Refrigerant Pressure Sensor 1 Voltage
Target Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Position
Actual Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Position
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Drive Status
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 IC Malfunction
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Circuit Open
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Overcurrent
AC Charging Negative Relay Drive Request
AC Charging Positive Relay Drive Request
AC Charging Precharge Relay Drive Request
AC Charging Negative Relay Status
AC Charging Positive Relay Status
AC Charging Precharge Relay Status
AC Charging Relay Permission Signal Status

Vehicle Behavior Chart

VEHICLE BEHAVIOR CHART

VEHICLE BEHAVIOR CHART

(a) Vehicle behavior categorized by DTC

If a DTC is output, the vehicle behaves as follows.

DTC No.	Detection Item	Toyota Prius Vehicle Behavior when DTC is Output
P056014	System Voltage (BATT) Circuit Short to Ground or Open	Normal driving
P060629	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid	Reduced output power Engine not stopped
P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message	Reduced output power Engine not stopped
P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure	Reduced output power Engine not stopped
P060A87	Hybrid/EV Battery Energy Control Module Processor from Monitoring Processor Missing Message	Reduced output power Engine not stopped
P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure	Reduced output power Engine not stopped
P062F44	Hybrid/EV Battery Energy Control Module EEPROM Data Memory Failure	Normal driving
P062F46	Hybrid/EV Battery Energy Control Module EEPROM Calibration / Parameter Memory Failure	Normal driving
P0A1D94	Hybrid/EV Powertrain Control Module Unexpected Operation	Hybrid system stopped
P0A9563	High Voltage Fuse Accumulated Load History	Normal driving
P0A9B11	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground	Normal driving
P0A9B15	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open	Normal driving
P0A9B1C	Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range	Normal driving
P0A9B2A	Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range	Normal driving
P0AA749	Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure	Normal driving
P0ABF11	Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground	Reduced output power Engine not stopped
P0ABF15	Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open	Reduced output power Engine not stopped
P0ABF28	Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure	Reduced output power Engine not stopped
P0ABF2A	Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range	Reduced output power Engine not stopped
P0AC511	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground	Normal driving
P0AC515	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open	Normal driving
P0AC51C	Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range	Normal driving
P0AC52A	Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range	Normal driving
P0ACA11	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground	Normal driving
P0ACA15	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open	Normal driving
P0ACA1C	Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range	Normal driving
P0ACA2A	Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range	Normal driving
P0AE811	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground	Normal driving
P0AE815	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open	Normal driving
P0AE81C	Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range	Normal driving
P0AE82A	Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range	Normal driving
P0B0E11	Hybrid/EV Battery Current Sensor "B" Circuit Short to Ground	Reduced output power Engine not stopped
P0B0E15	Hybrid/EV Battery Current Sensor "B" Circuit Short to Auxiliary Battery or Open	Reduced output power Engine not stopped
P0B1362	Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure	Reduced output power Engine not stopped
P0BC211	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground	Normal driving
P0BC215	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open	Normal driving
P0BC21C	Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range	Normal driving
P0BC22A	Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range	Normal driving
P0C3000	Hybrid/EV Battery State of Charge High	Greatly reduced output power A driving range is limited Engine always stopped
P0C3200	Hybrid/EV Battery Cooling System "A" Performance	Toyota Prius Vehicle behaves as follows when HV battery temperature is the specified value or higher: Reduced output power Engine not stopped
P0C3311	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground	Normal driving
P0C3315	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C331C	Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range	Normal driving
P0C332A	Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range	Normal driving
P0C4211	Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground	Normal driving
P0C4215	Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit High Circuit Short to Auxiliary Battery or Open	Normal driving
P0C7C11	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Ground	Normal driving
P0C7C15	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C7C1C	Hybrid/EV Battery Temperature Sensor "G" Voltage Out of Range	Normal driving
P0C7C2A	Hybrid/EV Battery Temperature Sensor "G" Signal Stuck In Range	Normal driving
P0C8111	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Ground	Normal driving
P0C8115	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C811C	Hybrid/EV Battery Temperature Sensor "H" Voltage Out of Range	Normal driving
P0C812A	Hybrid/EV Battery Temperature Sensor "H" Signal Stuck In Range	Normal driving
P0C8811	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Ground	Normal driving
P0C8815	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C881C	Hybrid/EV Battery Temperature Sensor "I" Voltage Out of Range	Normal driving
P0C882A	Hybrid/EV Battery Temperature Sensor "I" Signal Stuck In Range	Normal driving
P0C8D11	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Ground	Normal driving
P0C8D15	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C8D1C	Hybrid/EV Battery Temperature Sensor "J" Voltage Out of Range	Normal driving
P0C8D2A	Hybrid/EV Battery Temperature Sensor "J" Signal Stuck In Range	Normal driving
P0C9211	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Ground	Normal driving
P0C9215	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C921C	Hybrid/EV Battery Temperature Sensor "K" Voltage Out of Range	Normal driving
P0C922A	Hybrid/EV Battery Temperature Sensor "K" Signal Stuck In Range	Normal driving
P0C9711	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Ground	Normal driving
P0C9715	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Auxiliary Battery or Open	Normal driving
P0C971C	Hybrid/EV Battery Temperature Sensor "L" Voltage Out of Range	Normal driving
P0C972A	Hybrid/EV Battery Temperature Sensor "L" Signal Stuck In Range	Normal driving
P0CA811	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Ground	Normal driving
P0CA815	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Auxiliary Battery or Open	Normal driving
P0CA81C	Hybrid/EV Battery Temperature Sensor "M" Voltage Out of Range	Normal driving
P0CA82A	Hybrid/EV Battery Temperature Sensor "M" Signal Stuck In Range	Normal driving
P0CAD11	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Ground	Normal driving
P0CAD15	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Auxiliary Battery or Open	Normal driving
P0CAD1C	Hybrid/EV Battery Temperature Sensor "N" Voltage Out of Range	Normal driving
P0CAD2A	Hybrid/EV Battery Temperature Sensor "N" Signal Stuck In Range	Normal driving
P0CB211	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Ground	Normal driving
P0CB215	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Auxiliary Battery or Open	Normal driving
P0CB21C	Hybrid/EV Battery Temperature Sensor "O" Voltage Out of Range	Normal driving
P0CB22A	Hybrid/EV Battery Temperature Sensor "O" Signal Stuck In Range	Normal driving
P0CD511	Hybrid/EV Battery Pack Coolant Temperature Sensor "B" Circuit Low Circuit Short to Ground	Normal driving
P0CD515	Hybrid/EV Battery Pack Coolant Temperature Sensor "B" Circuit High Circuit Short to Auxiliary Battery or Open	Normal driving
P0D0A11	Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground	Plug-in charging suspended
P0D0A15	Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open	Plug-in charging suspended
P0D1111	Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground	Plug-in charging suspended
P0D1115	Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open	Plug-in charging suspended
P0D1A18	Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold	Normal driving
P0D1A19	Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit High Circuit Current Above Threshold	Normal driving
P0D1A71	Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck	Toyota Prius Vehicle behaves as follows when HV battery temperature is the specified value or higher: Reduced output power Engine not stopped
P0E2D00	Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance	Reduced output power Engine not stopped
P0E6D11	Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground	Plug-in charging suspended
P0E6D15	Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open	Plug-in charging suspended
P19CF62	Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure	Toyota Prius Vehicle behaves as follows when HV battery temperature is the specified value or higher: Reduced output power Engine not stopped
P1A001C	Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range	Reduced output power Engine not stopped
P1A051C	Hybrid Battery Stack 3 Cell Voltage Detection Voltage Out of Range	Reduced output power Engine not stopped
P1A6017	Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold	Reduced output power Engine not stopped
P1A6116	Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold	Reduced output power Engine not stopped
P1A6317	Hybrid/EV Battery Stack 3 Cell Circuit Voltage Above Threshold	Reduced output power Engine not stopped
P1A6416	Hybrid/EV Battery Stack 3 Cell Circuit Voltage Below Threshold	Reduced output power Engine not stopped
P1A8000	Hybrid/EV Battery Stack 1 Delta SOC High	Normal driving
P1A8100	Hybrid/EV Battery Stack 1 Delta SOC High (Extreme)	Reduced output power Engine not stopped
P1A8500	Hybrid/EV Battery Stack 2 Delta SOC High	Normal driving
P1A8600	Hybrid/EV Battery Stack 2 Delta SOC High (Extreme)	Reduced output power Engine not stopped
P1A8A00	Hybrid/EV Battery Stack 3 Delta SOC High	Normal driving
P1A8B00	Hybrid/EV Battery Stack 3 Delta SOC High (Extreme)	Reduced output power Engine not stopped
P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open	Reduced output power Engine not stopped
P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On	Reduced output power Engine not stopped
P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open	Reduced output power Engine not stopped
P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On	Reduced output power Engine not stopped
P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open	Reduced output power Engine not stopped
P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On	Reduced output power Engine not stopped
P1AFC00	System Voltage (AM) Circuit Voltage Below Threshold	Hybrid system stopped
P1AFD00	Flying Capacitor Circuit Voltage Out of Range	Reduced output power Engine not stopped
P1AFD1C	Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range	Reduced output power Engine not stopped
P1B4011	Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground	Normal driving
P1B4015	Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Auxiliary Battery or Open	Normal driving
P1B4511	Hybrid/EV Battery Heater 2 Temperature Sensor Circuit Short to Ground	Normal driving
P1B4515	Hybrid/EV Battery Heater 2 Temperature Sensor Circuit Short to Auxiliary Battery or Open	Normal driving
P1B4A62	Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure	Normal driving
P1B4B72	Hybrid/EV Battery Heater Relay Actuator Stuck Open	Normal driving
P1B4B73	Hybrid/EV Battery Heater Relay Actuator Stuck Closed	Normal driving
P1B8312	Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery	Normal driving
P1B8314	Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Low Circuit Short to Ground or Open	Normal driving
P1B831C	Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range	Toyota Prius Vehicle behaves as follows when HV battery temperature is the specified value or higher: Reduced output power Engine not stopped
P1C8549	High Voltage Power Resource Internal Electronic Failure	Hybrid system stopped
P1CBB12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery	Reduced output power Engine not stopped
P1CBB14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open	Reduced output power Engine not stopped
P1CC81E	Hybrid/EV Battery Stack 1 Voltage Difference Out of Range	Reduced output power Engine not stopped
P1CC91E	Hybrid/EV Battery Stack 2 Voltage Difference Out of Range	Reduced output power Engine not stopped
P1CCA1E	Hybrid/EV Battery Stack 3 Voltage Difference Out of Range	Reduced output power Engine not stopped
P1F6900	Hybrid/EV Battery Pack Coolant Control Valve "B" Monitor Performance	Normal driving
P2BE411	Hybrid/EV Battery Pack Current Sensor "C" Low Circuit Short to Ground	Reduced output power Engine not stopped
P2BE415	Hybrid/EV Battery Pack Current Sensor "C" High Circuit Short to Auxiliary Battery or Open	Reduced output power Engine not stopped
P2BE41C	Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range	Reduced output power Engine not stopped
P2BE428	Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure	Reduced output power Engine not stopped
P300000	Hybrid/EV Battery Discharge Control Malfunction	Hybrid system stopped
P300016	Hybrid/EV Battery Control System Circuit Voltage Below Threshold	Hybrid system stopped
P30004B	Hybrid/EV Battery Control System Over Temperature	Hybrid system stopped
P301A1C	Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range	Reduced output power Engine not stopped
P306562	Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure	Normal driving
P306A62	Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure	Normal driving
P306B62	Hybrid/EV Battery Temperature Sensor "Group 3" Signal Compare Failure	Normal driving
P31AA17	Hybrid/EV Battery Stack 1 Cell Circuit Voltage Above Threshold	Reduced output power Engine not stopped
P31AB16	Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold	Reduced output power Engine not stopped
P31B300	Hybrid/EV Battery Voltage High	Reduced output power Engine not stopped
P31B400	Extreme Hybrid/EV Battery Charging Current	Hybrid system stopped
P31B549	Hybrid/EV Battery Internal Electronic Failure	Hybrid system stopped
P33DA1E	Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range	Reduced output power Engine not stopped
P33DB1E	Hybrid/EV Battery Stack 2 Circuit Resistance Out of Range	Reduced output power Engine not stopped
P33DC1E	Hybrid/EV Battery Stack 3 Circuit Resistance Out of Range	Reduced output power Engine not stopped
P33E01B	Hybrid/EV Battery Stack 1 Circuit Resistance Above Threshold	Reduced output power Engine not stopped
P33E11B	Hybrid/EV Battery Stack 2 Circuit Resistance Above Threshold	Reduced output power Engine not stopped
P33E21B	Hybrid/EV Battery Stack 3 Circuit Resistance Above Threshold	Reduced output power Engine not stopped
P33E600	Hybrid/EV Battery Stack 1 Capacity Decline	Normal driving
P33E700	Hybrid/EV Battery Stack 2 Capacity Decline	Normal driving
P33E800	Hybrid/EV Battery Stack 3 Capacity Decline	Normal driving
P33EC16	(Extreme) Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold	Reduced output power Engine not stopped
P33ED16	(Extreme) Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold	Reduced output power Engine not stopped
P33EE16	(Extreme) Hybrid/EV Battery Stack 3 Cell Circuit Voltage Below Threshold	Reduced output power Engine not stopped
U010087	Lost Communication with ECM/PCM "A" Missing Message	Normal driving
U016487	Lost Communication with HVAC Control Module Missing Message	Reduced output power
U029387	Lost Communication with Hybrid/EV Powertrain Control Module Missing Message	Normal driving
U115087	Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message	Reduced output power Engine not stopped
U115387	Lost Communication with Hybrid/EV Battery Charger Control Module "A" (ch2) Missing Message	Normal driving

Data List / Active Test

DATA LIST / ACTIVE TEST

Data List

NOTICE:

Some Data List values may vary significantly if there are slight differences in the environment in which the vehicle is operating when measurements are obtained. Variations may also occur due to aging of the Toyota Prius vehicle. Due to these considerations, it is not always possible to provide definite values to be used for judgment of malfunctions. It is possible that a malfunction may be present even if measured values are within the reference range.
In the event of a problem with intricate symptoms, collect sample data from another Toyota Prius vehicle of the same model operating under identical conditions in order to reach an overall judgment by comparing all the items in the Data List.

(a) Check the results by referring to the following table.

HINT:

When reviewing Data List information, try to select only the specific Data List items related to the inspection being performed. If all items are selected when checking the Data List, the interval between updates for each item will be longer, resulting in delayed or incorrect data.
Using a custom list makes it possible to easily select smaller groups of related Data List items.
The following custom lists are available:
- All Data
- Hybrid/EV Battery
- Hybrid/EV Battery (Exc IR)
- Hybrid/EV Battery Temperature

Powertrain > HV Battery > Data List

Tester Display	Measurement Item	Diagnostic Note
Toyota Prius Vehicle Speed	Vehicle speed Vehicle stopped: 0 km/h (0 mph) While driving at a constant speed: No significant fluctuation	-
Target Engine Power	Target engine power While driving with the engine running: Varies depending on Toyota Prius vehicle operating conditions	-
Engine Speed	Engine speed Engine stopped: 0 rpm While engine running at a constant speed: No significant fluctuation	-
Calculate Load	Engine load (value increases in proportion to increase in load)	-
Coolant Temperature	Engine coolant temperature Cold start→Fully warmed up: Gradually rises After warming up: 75 to 100°C (167 to 212°F)	-
Engine Run Time	Elapsed time after starting engine	Elapsed time from initial engine start until the ignition switch is turned off.
Accelerator Position	Accelerator pedal depressed angle Accelerator pedal depressed: Changes with accelerator pedal position	-
Throttle Position Sensor No.1 Voltage %	Throttle position sensor	Throttle valve status
Shift Position	Shift position of control Matches currently selected shift position: P, R, N, D or B	-
Atmospheric Pressure	Atmospheric pressure Constant: Atmosphere pressure	-
Ambient Temperature	Ambient air temperature Constant: Almost same as ambient air temperature	-
BATT Voltage	Auxiliary battery voltage (Battery ECU assembly power source voltage) Constant: 11.00 to 15.00 V	-
Smoothed Value of BATT Voltage	Smoothed value of auxiliary battery voltage Constant: 11.00 to 15.00 V	-
Warmup Cycle Cleared DTC	The number of times the engine is warmed up after clearing DTCs MIL OFF, engine coolant temperature increases from below 22°C (71.6°F) before starting the engine to above 70°C (158°F) after starting the engine: Increases once	-
Distance from DTC Cleared	Drive distance after clearing DTCs	-
Time after DTC Cleared	Elapsed time after clearing DTCs	Time elapsed after DTCs are cleared (Not counted when the ignition switch is off).
MIL	MIL status	-
Running Time from MIL ON	Running time from MIL on	-
Total Distance Traveled	Drive total distance	-
Total Distance Traveled - Unit	Drive total distance unit	-
MIL ON Run Distance	Drive distance from MIL on	-
Number of Emission DTC	Emissions-related DTCs	-
IGB Signal Status	IGB signal status Ignition switch ON or ON (READY): ON	-
IG2 Signal Status	IG2 signal status Ignition switch ON or ON (READY): ON	-
Ready Signal	Ready signal status Ignition switch ON (READY): ON	-
Ready ON Prevention Status	Ready ON prevention status	-
IG OFF Time of Last Trip	IG OFF time of last trip	-
HV/EV Activate Condition	Hybrid Toyota Prius vehicle control system power source mode status Hybrid Vehicle Control System started using ignition switch: Normal Hybrid vehicle control system started using remote climate control function: Hybrid vehicle control system started using remote starter: Remote	-
SMRG Control Status	Commanded state of SMRG Ignition switch ON (READY): ON	-
SMRB Control Status	Commanded state of SMRB Ignition switch ON (READY): ON	-
SMRP Control Status	Commanded state of SMRP Immediately after the ignition switch ON (ST-ON) state occurred: ON After the above timing: OFF	-
WIN Control Limit Power	WIN control limit power -40.00 kW or more	-
WOUT Control Limit Power	WOUT control limit power 68.00 kW or less	-
A/C Consumption Power	A/C consumption power While the air conditioning system is operating: 0.00 to 5.00 kW	-
A/C System Status	A/C system status	-
Stop Light Switch	Stop light switch assembly condition Brake pedal depressed: ON	-
Airbag Status (Collision)	Airbag ECU assembly collision detection Collision detection by the airbag ECU assembly: ON	-
Airbag Status (Safing)	Safing state of the airbag ECU assembly When safing state of the airbag ECU assembly: ON	-
Airbag Status (Normal)	Control state of airbag ECU assembly When the airbag ECU assembly is operating normally: ON	-
Generator Revolution	Generator (MG1) speed (detected by resolver sensor) Generator (MG1) speed is set to obtain requested target engine speed During charge or discharge: Varies depending on Toyota Prius vehicle operating conditions	-
Target Generator Torque	Generator (MG1) torque request value During charge or discharge: Varies depending on vehicle operating conditions	-
Motor Revolution	Motor (MG2) speed (detected by resolver sensor) Motor (MG2) speed changes in proportion to Toyota Prius vehicle speed. Motor (MG2) speed is not influenced by accelerator pedal opening angle, engine speed or generator (MG1) speed. While driving: Varies depending on vehicle speed	-
Target Motor Torque	Motor (MG2) torque request value While driving: Varies depending on Toyota Prius vehicle operating conditions	-
Request Motor Regenerative Brake Torque	Requested motor (MG2) regenerative braking torque While braking: Varies depending on Toyota Prius vehicle operation conditions	When regenerative braking is being performed, current flows from the motor (MG2) to charge the HV battery and braking torque is generated. Electronically controlled brake system
Motor Regenerate Brake Execution Torque	Motor (MG2) regenerative braking execution torque While braking: Varies depending on Toyota Prius vehicle operation conditions	-
Generator Carrier Frequency	Generator (MG1) carrier frequency	-
Motor Carrier Frequency	Motor (MG2) carrier frequency	-
Boosting Converter Carrier Frequency	Boost converter signal carrier frequency	-
VL-Voltage before Boosting	High voltage before it is boosted Ignition switch ON (READY): Practically the same as the HV battery voltage	-
VH-Voltage after Boosting	High voltage after it is boosted Engine revving up with park (P) selected: After boosted voltage to below approximately 600 V	-
Boost Ratio	Boost converter boost ratio	-
Hybrid/EV Battery SOC	HV battery state of charge Primary calculated from charging and discharging amperage Constant: 0.0 to 100.0%	-
Delta SOC	Difference between maximum and minimum values of SOC READY indicator on, engine stopped and no electrical load: 0.0 to 60.0%	-
Hybrid/EV Battery SOC just after IG-ON	HV battery state of charge soon after ignition switch ON	-
Hybrid/EV Battery Maximum SOC	Maximum SOC after ignition switch turned to ON in current trip	-
Hybrid/EV Battery Minimum SOC	Minimum SOC after ignition switch turned to ON in current trip	-
Hybrid/EV Battery Voltage	HV battery voltage Ignition switch ON: 200.00 to 400.00 V	-
Hybrid/EV Battery Current	HV battery current Ignition switch ON: -6.20 to 6.20 A	-
Hybrid/EV Battery Current for Hybrid/EV Battery Control	HV battery current for hybrid battery control	-
Hybrid/EV Battery Current for Hybrid/EV Battery Control (Sub)	HV battery current for HV battery control (Sub)	-
Hybrid/EV Battery Current for Driving Control	HV battery current for driving control	-
Hybrid/EV Battery Current (IBL)	HV battery current (IBL)	-
Hybrid/EV Battery Current Sensor Voltage for Hybrid/EV Battery Control	Hybrid battery current sensor voltage for hybrid battery control	-
Hybrid/EV Battery Current Sensor Voltage for Hybrid/EV Battery Control (Sub)	Hybrid battery current sensor voltage for hybrid battery control (Sub)	-
Hybrid/EV Battery Current Sensor Voltage (IBL)	Hybrid battery current sensor voltage (IBL)	-
Hybrid/EV Battery Control Mode	HV battery control mode	-
Hybrid/EV Battery Current Sensor Power Supply Voltage	Hybrid battery current sensor power supply voltage	-
Hybrid/EV Battery Current Sensor Offset Learning Value	Hybrid battery current sensor offset learning value	-
Hybrid/EV Battery Current Sensor Offset	Hybrid battery current sensor offset	-
Hybrid/EV Battery Current Sensor Offset Learning Value (Sub)	Hybrid battery current sensor offset learning value (Sub)	-
Hybrid/EV Battery Current Sensor Offset (Sub)	Hybrid battery current sensor offset (Sub)	-
Hybrid/EV Battery Current Sensor Offset Learning Value (IBL)	Hybrid battery current sensor offset learning value (IBL)	-
Hybrid/EV Battery Current Sensor Offset (IBL)	Hybrid battery current sensor offset (IBL)	-
Short Wave Highest Value	The insulation malfunction detection circuit voltage in the battery ECU assembly Wait for 2 minutes or more after ignition switch ON (READY) and "VL-Voltage before Boosting" is approximately the same as "VH-Voltage after Boosting": 4.00 V or higher	High-voltage circuit
Hybrid/EV Battery Status Information 1	Hybrid/EV Battery Status Information	-
Hybrid/EV Battery Load Status (Latest)	Hybrid/EV Battery Load Status (Latest)	-
Hybrid/EV Battery Cell Circuit Open Information for Monitoring IC 1	HV battery cell circuit open information for monitoring IC 1	-
Hybrid/EV Battery Cell Circuit Open Information for Monitoring IC 2	HV battery cell circuit open information for monitoring IC 2	-
Hybrid/EV Battery Cell Circuit Open Information for Monitoring IC 3	HV battery cell circuit open information for monitoring IC 3	-
Lost Communication with Hybrid/EV Battery Monitoring IC	Lost communication with HV battery monitoring IC	-
Hybrid/EV Battery Monitoring IC 1 Internal Malfunction (Determinable)	HV battery monitoring IC 1 internal malfunction (Determinable)	-
Hybrid/EV Battery Monitoring IC 2 Internal Malfunction (Determinable)	HV battery monitoring IC 2 internal malfunction (Determinable)	-
Hybrid/EV Battery Monitoring IC 3 Internal Malfunction (Determinable)	HV battery monitoring IC 3 internal malfunction (Determinable)	-
Hybrid/EV Battery Monitoring IC Internal Malfunction (Unidentifiable)	HV battery monitoring IC internal malfunction (Unidentifiable)	-
Hybrid/EV Battery Monitoring IC 1 Power Supply Malfunction	HV battery monitoring IC 1 power supply malfunction	-
Hybrid/EV Battery Monitoring IC 2 Power Supply Malfunction	HV battery monitoring IC 2 power supply malfunction	-
Hybrid/EV Battery Monitoring IC 3 Power Supply Malfunction	HV battery monitoring IC 3 power supply malfunction	-
Hybrid/EV Battery Monitoring IC 1 Cell Voltage Detection Malfunction	HV battery monitoring IC 1 cell voltage detection malfunction	-
Hybrid/EV Battery Monitoring IC 2 Cell Voltage Detection Malfunction	HV battery monitoring IC 2 cell voltage detection malfunction	-
Hybrid/EV Battery Monitoring IC 3 Cell Voltage Detection Malfunction	HV battery monitoring IC 3 cell voltage detection malfunction	-
Hybrid/EV Battery Stack 1 Cell Average Voltage	No. 1 HV supply stack sub-assembly cell average voltage Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Stack 2 Cell Average Voltage	No. 2 HV supply stack sub-assembly cell average voltage Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Stack 3 Cell Average Voltage	No. 3 HV supply stack sub-assembly cell average voltage Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Block 1 Cell Average Voltage	HV battery block 1 cell average voltage Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Block 2 Cell Average Voltage	HV battery block 2 cell average voltage Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Block 3 Cell Average Voltage	HV battery block 3 cell average voltage Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell Maximum Voltage Up to 1 trip before	HV battery cell maximum voltage up to 1 trip before Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell Minimum Voltage Up to 1 trip before	HV battery cell minimum voltage up to 1 trip before Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 1 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 2 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 3 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 4 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 5 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 6 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 7 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 8 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 9 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 10 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 11 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 12 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 13 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 14 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 15 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 16 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 17 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 18 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V
Hybrid/EV Battery Cell 19 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 20 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 21 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 22 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 23 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 24 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 25 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 26 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 27 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 28 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 29 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 30 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 31 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 32 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 33 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 34 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 35 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 36 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 37 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 38 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 39 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 40 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 41 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 42 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 43 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 44 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 45 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 46 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 47 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 48 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 49 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 50 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 51 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 52 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 53 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 54 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 55 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 56 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 57 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 58 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 59 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 60 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 61 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 62 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 63 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 64 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 65 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 66 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 67 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 68 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 69 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 70 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 71 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 72 Voltage	HV battery cell voltage of each battery cell Ignition switch ON: 3.00 to 4.00 V	-
Hybrid/EV Battery Cell 1 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 2 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 3 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 4 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 5 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 6 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 7 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 8 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 9 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 10 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 11 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 12 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 13 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 14 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 15 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 16 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 17 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 18 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 19 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 20 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 21 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 22 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 23 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 24 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 25 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 26 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 27 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 28 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 29 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 30 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 31 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 32 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 33 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 34 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 35 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 36 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 37 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 38 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 39 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 40 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 41 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 42 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 43 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 44 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 45 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 46 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 47 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 48 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 49 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 50 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 51 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 52 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 53 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 54 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 55 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 56 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 57 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 58 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 59 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 60 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 61 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 62 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 63 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 64 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 65 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 66 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 67 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 68 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 69 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 70 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 71 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Cell 72 Internal Resistance	Internal resistance of each battery cell Always: 0.006 Ω or less	-
Hybrid/EV Battery Temperature 1	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 2	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 3	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 4	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 5	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 6	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 7	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 8	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 9	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 10	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 11	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 12	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 13	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 14	Battery module temperature Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature 15	Battery module temperature Toyota Prius Vehicle left for 1 day: Same as ambient air temperature	-
Hybrid/EV Battery Temperature Sensor Voltage 1	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 2	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 3	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 4	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 5	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 6	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 7	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 8	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 9	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 10	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 11	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 12	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Temperature Sensor Voltage 13	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))
Hybrid/EV Battery Temperature Sensor Voltage 14	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))
Hybrid/EV Battery Temperature Sensor Voltage 15	HV battery temperature sensor voltage 4.75 (-40°C (-40°F)) to 0.46 V (90°C (194°F))	-
Hybrid/EV Battery Cooling Fan Low Speed Request	Battery cooling blower assembly Low speed requested	-
Hybrid/EV Battery Heater 1 Temperature	No. 1 traction battery heater temperature	-
Hybrid/EV Battery Heater 2 Temperature	No. 2 traction battery heater temperature	-
Hybrid/EV Battery Heater 1 Temperature Sensor Voltage	HV battery heater temperature sensor 0 voltage	-
Hybrid/EV Battery Heater 2 Temperature Sensor Voltage	HV battery heater temperature sensor 1 voltage	-
Hybrid/EV Battery Heater Relay	Operating state of heater relay Battery ECU assembly requesting heater relay operation: ON	-
Hybrid/EV Battery Thermal Keep Control Mode Status	Hybrid battery thermal keep control mode status ON: Enabled OFF: Disabled	-
Hybrid/EV Battery Cooling Request Level	HV battery cooling request level	-
Hybrid/EV Battery Cooling Status (A/C)	HV battery cooling status (A/C)	-
Hybrid/EV Battery Refrigerant Cooling Control Status	HV battery refrigerant cooling control status	-
Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)	Hybrid/EV battery refrigerant temperature (duct inlet 1)	-
Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)	Hybrid/EV battery refrigerant temperature (duct outlet 1)	-
Hybrid/EV Battery Refrigerant Temperature Sensor Voltage (Duct Inlet 1)	HV battery refrigerant temperature sensor voltage (duct inlet 1)	-
Hybrid/EV Battery Refrigerant Temperature Sensor Voltage (Duct Outlet 1)	HV battery refrigerant temperature sensor voltage (duct outlet 1)	-
Hybrid/EV Battery Refrigerant Pressure 1	HV battery refrigerant pressure 1	-
Hybrid/EV Battery Refrigerant Pressure Sensor 1 Voltage	HV battery refrigerant pressure sensor 1 voltage	-
Target Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Position	Target HV battery refrigerant cooling expansion valve 1 position	-
Actual Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Position	Actual HV battery refrigerant cooling expansion valve 1 position	-
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Drive Status	HV battery refrigerant cooling expansion valve 1 drive status	-
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 IC Malfunction	HV battery refrigerant cooling expansion valve 1 IC malfunction	-
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Circuit Open	HV battery refrigerant cooling expansion valve 1 circuit open	-
Hybrid/EV Battery Refrigerant Cooling Expansion Valve 1 Overcurrent	HV battery refrigerant cooling expansion valve 1 overcurrent	-
AC Charging Negative Relay Drive Request	Commanded state of CHRG Battery ECU assembly requesting CHRG relay operation: ON	-
AC Charging Positive Relay Drive Request	Commanded state of CHRB Battery ECU assembly requesting CHRB relay operation: ON	-
AC Charging Precharge Relay Drive Request	Commanded state of CHRP Battery ECU assembly requesting CHRP relay operation: ON	-
AC Charging Negative Relay Status	Operating state of CHRG CHRG relay operating: ON	-
AC Charging Positive Relay Status	Operating state of CHRB CHRB relay operating: ON	-
AC Charging Precharge Relay Status	Operating state of CHRP CHRP relay operating: ON	-
AC Charging Relay Permission Signal Status	AC charging relay permission signal status	-

Active Test

Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

NOTICE:

It is necessary to use caution, because if the tester DLC connector becomes disconnected or if a communication error occurs during an Active Test, the Toyota Prius vehicle could become inoperative (the READY light may go off).
After performing the Active Test, turn the ignition switch off before proceeding to the next step.

(a) According to the display on the GTS perform the appropriate Active Test.

Powertrain > HV Battery > Active Test

Tester Display	Measurement Item	Control Range	Restrict Condition	Diagnostic Note
Hybrid/EV Battery Heater Relay	To activate the traction battery heater continuously	ON / OFF	Ignition switch ON HV battery system normal Auxiliary battery voltage is 9.5 V or higher HV battery temperature is normal range	Activate the traction battery heater relay and rise traction battery heater temperature. Related Data List Hybrid/EV Battery Heater 1 Temperature Hybrid/EV Battery Heater 1 Temperature Sensor Voltage Hybrid/EV Battery Heater 2 Temperature Hybrid/EV Battery Heater 2 Temperature Sensor Voltage Hybrid/EV Battery Heater Relay
Hybrid/EV Battery Refrigerant Cooling Valve	To activate the HV battery refrigerant cooling valve continuously	ON / OFF	Ignition switch ON	-
Hybrid/EV Battery Refrigerant Cooling Control	To check operation of the HV battery refrigerant cooling control	ON / OFF	Ignition switch ON Ignition switch ON (READY) Auxiliary battery voltage is 9.5 V or higher HV battery temperature is 11°C or higher Refrigerant temperature inside the HV battery is 0°C or higher	-

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

HYBRID BATTERY SYSTEM

DTC No.	Detection Item	MIL	Warning Indicate	DTC Output from	Priority	Note
P056014	System Voltage (BATT) Circuit Short to Ground or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0562
P060629	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0606
P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0606
P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P060A
P060A87	Hybrid/EV Battery Energy Control Module Processor from Monitoring Processor Missing Message	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P060A
P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P060B
P062F44	Hybrid/EV Battery Energy Control Module EEPROM Data Memory Failure	Comes on	Master Warning: Does not come on	HV Battery	A	SAE Code: P062F
P062F46	Hybrid/EV Battery Energy Control Module EEPROM Calibration / Parameter Memory Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P062F
P0A1D94	Hybrid/EV Powertrain Control Module Unexpected Operation	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A1D
P0A9563	High Voltage Fuse Accumulated Load History	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A95
P0A9B11	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9D
P0A9B15	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9E
P0A9B1C	Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9C
P0A9B2A	Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9C
P0AA749	Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AA7
P0ABF11	Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC1
P0ABF15	Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC2
P0ABF28	Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC0
P0ABF2A	Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC0
P0AC511	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC7
P0AC515	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC8
P0AC51C	Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC6
P0AC52A	Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC6
P0ACA11	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACC
P0ACA15	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACD
P0ACA1C	Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACB
P0ACA2A	Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACB
P0AE811	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AEA
P0AE815	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AEB
P0AE81C	Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AE9
P0AE82A	Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AE9
P0B0E11	Hybrid/EV Battery Current Sensor "B" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0B10
P0B0E15	Hybrid/EV Battery Current Sensor "B" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0B11
P0B1362	Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0B13
P0BC211	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC4
P0BC215	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC5
P0BC21C	Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC3
P0BC22A	Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC3
P0C3000	Hybrid/EV Battery State of Charge High	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C30
P0C3200	Hybrid/EV Battery Cooling System "A" Performance	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C32
P0C3311	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C35
P0C3315	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C36
P0C331C	Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C34
P0C332A	Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C34
P0C4211	Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C44
P0C4215	Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit High Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C45
P0C7C11	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7E
P0C7C15	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7F
P0C7C1C	Hybrid/EV Battery Temperature Sensor "G" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7D
P0C7C2A	Hybrid/EV Battery Temperature Sensor "G" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7D
P0C8111	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C83
P0C8115	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C84
P0C811C	Hybrid/EV Battery Temperature Sensor "H" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C82
P0C812A	Hybrid/EV Battery Temperature Sensor "H" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C82
P0C8811	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8A
P0C8815	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8B
P0C881C	Hybrid/EV Battery Temperature Sensor "I" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C89
P0C882A	Hybrid/EV Battery Temperature Sensor "I" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C89
P0C8D11	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8F
P0C8D15	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C90
P0C8D1C	Hybrid/EV Battery Temperature Sensor "J" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8E
P0C8D2A	Hybrid/EV Battery Temperature Sensor "J" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8E
P0C9211	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C94
P0C9215	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C95
P0C921C	Hybrid/EV Battery Temperature Sensor "K" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C93
P0C922A	Hybrid/EV Battery Temperature Sensor "K" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C93
P0C9711	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C99
P0C9715	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C9A
P0C971C	Hybrid/EV Battery Temperature Sensor "L" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C98
P0C972A	Hybrid/EV Battery Temperature Sensor "L" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C98
P0CA811	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAA
P0CA815	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAB
P0CA81C	Hybrid/EV Battery Temperature Sensor "M" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CA9
P0CA82A	Hybrid/EV Battery Temperature Sensor "M" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CA9
P0CAD11	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAF
P0CAD15	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB0
P0CAD1C	Hybrid/EV Battery Temperature Sensor "N" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAE
P0CAD2A	Hybrid/EV Battery Temperature Sensor "N" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAE
P0CB211	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB4
P0CB215	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB5
P0CB21C	Hybrid/EV Battery Temperature Sensor "O" Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB3
P0CB22A	Hybrid/EV Battery Temperature Sensor "O" Signal Stuck In Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB3
P0CD511	Hybrid/EV Battery Pack Coolant Temperature Sensor "B" Circuit Low Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CD7
P0CD515	Hybrid/EV Battery Pack Coolant Temperature Sensor "B" Circuit High Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CD8
P0D0A11	Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D0C
P0D0A15	Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D0D
P0D1111	Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D13
P0D1115	Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D14
P0D1A18	Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D1D
P0D1A19	Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit High Circuit Current Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D1E
P0D1A71	Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0D1B
P0E2D00	Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0E2D
P0E6D11	Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0E6F
P0E6D15	Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0E70
P19CF62	Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P19CF
P1A001C	Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A00
P1A051C	Hybrid Battery Stack 3 Cell Voltage Detection Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A05
P1A6017	Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A60
P1A6116	Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A61
P1A6317	Hybrid/EV Battery Stack 3 Cell Circuit Voltage Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A63
P1A6416	Hybrid/EV Battery Stack 3 Cell Circuit Voltage Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A64
P1A8000	Hybrid/EV Battery Stack 1 Delta SOC High	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A80
P1A8100	Hybrid/EV Battery Stack 1 Delta SOC High (Extreme)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A81
P1A8500	Hybrid/EV Battery Stack 2 Delta SOC High	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A85
P1A8600	Hybrid/EV Battery Stack 2 Delta SOC High (Extreme)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A86
P1A8A00	Hybrid/EV Battery Stack 3 Delta SOC High	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A8A
P1A8B00	Hybrid/EV Battery Stack 3 Delta SOC High (Extreme)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1A8B
P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AC4
P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AC4
P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AC5
P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AC5
P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AC6
P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AC6
P1AFC00	System Voltage (AM) Circuit Voltage Below Threshold	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AFC
P1AFD00	Flying Capacitor Circuit Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AFD
P1AFD1C	Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1AFD
P1B4011	Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B42
P1B4015	Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B43
P1B4511	Hybrid/EV Battery Heater 2 Temperature Sensor Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B47
P1B4515	Hybrid/EV Battery Heater 2 Temperature Sensor Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B48
P1B4A62	Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B4A
P1B4B72	Hybrid/EV Battery Heater Relay Actuator Stuck Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B4F
P1B4B73	Hybrid/EV Battery Heater Relay Actuator Stuck Closed	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B4E
P1B8312	Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B86
P1B8314	Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Low Circuit Short to Ground or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B85
P1B831C	Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B84
P1C8549	High Voltage Power Resource Internal Electronic Failure	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P3004
P1CBB12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1CBD
P1CBB14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1CBC
P1CC81E	Hybrid/EV Battery Stack 1 Voltage Difference Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33DA
P1CC91E	Hybrid/EV Battery Stack 2 Voltage Difference Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33DB
P1CCA1E	Hybrid/EV Battery Stack 3 Voltage Difference Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33DC
P1F6900	Hybrid/EV Battery Pack Coolant Control Valve "B" Monitor Performance	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1F69
P2BE411	Hybrid/EV Battery Pack Current Sensor "C" Low Circuit Short to Ground	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P2BE6
P2BE415	Hybrid/EV Battery Pack Current Sensor "C" High Circuit Short to Auxiliary Battery or Open	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P2BE7
P2BE41C	Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P2BE5
P2BE428	Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P2BE5
P300000	Hybrid/EV Battery Discharge Control Malfunction	Does not come on	Master Warning: Does not come on	HV Battery	A	SAE Code: P3000
P300016	Hybrid/EV Battery Control System Circuit Voltage Below Threshold	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P3000
P30004B	Hybrid/EV Battery Control System Over Temperature	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P3000
P301A1C	Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P301A
P306562	Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P3065
P306A62	Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P306A
P306B62	Hybrid/EV Battery Temperature Sensor "Group 3" Signal Compare Failure	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P306B
P31AA17	Hybrid/EV Battery Stack 1 Cell Circuit Voltage Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P31AA
P31AB16	Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P31AB
P31B300	Hybrid/EV Battery Voltage High	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P31B3
P31B400	Extreme Hybrid/EV Battery Charging Current	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P31B4
P31B549	Hybrid/EV Battery Internal Electronic Failure	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P31B5
P33DA1E	Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33DA
P33DB1E	Hybrid/EV Battery Stack 2 Circuit Resistance Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33DB
P33DC1E	Hybrid/EV Battery Stack 3 Circuit Resistance Out of Range	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33DC
P33E01B	Hybrid/EV Battery Stack 1 Circuit Resistance Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33E0
P33E11B	Hybrid/EV Battery Stack 2 Circuit Resistance Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33E1
P33E21B	Hybrid/EV Battery Stack 3 Circuit Resistance Above Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33E2
P33E600	Hybrid/EV Battery Stack 1 Capacity Decline	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P33E6
P33E700	Hybrid/EV Battery Stack 2 Capacity Decline	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P33E7
P33E800	Hybrid/EV Battery Stack 3 Capacity Decline	Does not come on	Master Warning: Comes on	HV Battery	A	SAE Code: P33E8
P33EC16	(Extreme) Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33EC
P33ED16	(Extreme) Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33ED
P33EE16	(Extreme) Hybrid/EV Battery Stack 3 Cell Circuit Voltage Below Threshold	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P33EE
U010087	Lost Communication with ECM/PCM "A" Missing Message	Comes on	Master Warning: Comes on	HV Battery	B	SAE Code: U0100
U016487	Lost Communication with HVAC Control Module Missing Message	Comes on	Master Warning: Comes on	HV Battery	B	SAE Code: U0164
U029387	Lost Communication with Hybrid/EV Powertrain Control Module Missing Message	Comes on	Master Warning: Comes on	HV Battery	B	SAE Code: U0293
U115087	Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message	Comes on	Master Warning: Comes on	HV Battery	B	SAE Code: U1150
U115387	Lost Communication with Hybrid/EV Battery Charger Control Module "A" (ch2) Missing Message	Comes on	Master Warning: Comes on	HV Battery	B	SAE Code: U1153

Registration / Initialization / Learning

REGISTRATION / INITIALIZATION / LEARNING

HIGH VOLTAGE FUSE ACCUMULATED LOAD HISTORY RESET

HINT:

If the service plug grip has been replaced, make sure to perform "High Voltage Fuse Accumulated Load History Reset" and then clear the DTCs.

DTC P0A9563 will be stored again if do not perform "High Voltage Fuse Accumulated Load History Reset".

(a) Enter the following menus.

Powertrain > HV Battery > Utility

Tester Display
High Voltage Fuse Accumulated Load History Reset

(b) According to the display on the GTS, perform High Voltage Fuse Accumulated Load History Reset and check that "High Voltage Fuse Accumulated Load History Reset is complete." is displayed.

NOTICE:

Performing High Voltage Fuse Accumulated Load History Reset takes approximately 20 to 25 minutes.
Make sure to confirm that "High Voltage Fuse Accumulated Load History Reset is complete." is displayed on GTS.
If "High Voltage Fuse Accumulated Load History Reset has failed. Do you want to try again?" is displayed on the GTS, perform the procedure again.

VEHICLE CONTROL HISTORY (RoB)

VEHICLE CONTROL HISTORY (RoB)

VEHICLE CONTROL HISTORY (HYBRID BATTERY SYSTEM)

(a) Enter the following menus: Powertrain / HV battery / Utility / Vehicle Control History (RoB).

Powertrain > HV Battery > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

HINT:

If any of the conditions in the "Cause" column are met, data related to the Vehicle Control History item "Engine Power Down Request (Parts Over Temperature)", "Ready ON Prevention" or "Limit to Charge / Discharge Control Value by Hybrid/EV Battery" will be stored in the battery ECU assembly.
When the Toyota Prius Vehicle Control History item "Engine Power Down Request (Parts Over Temperature)", "Ready ON Prevention" or "Limit to Charge / Discharge Control Value by Hybrid/EV Battery" is stored, the vehicle condition will be as shown in the Symptom column.
There are unimplemented function codes depending on Toyota Prius vehicle specification.

Vehicle Control History

Code	Tester Display	Vehicle Control History Data	Diagnostic Note
X0540	Ready ON Prevention	Incorrect HV battery is installed (Ignition switch does not turn to ON (READY).) Countermeasures: Replace the HV supply stack sub-assembly with a correct one.	-
		Incorrect ECM is installed (Ignition switch does not turn to ON (READY).) Toyota Prius Vehicle Control History Data: Number of Hybrid Battery Mismatch Judgment with Engine ECU "0" is displayed for this item when it is normal. If a value of "3" or higher is displayed for this item, the ignition switch cannot be turned to ON (READY) due to an incorrect ECM having been installed. Countermeasures: Check the part number and replace the ECM with a correct one.	-
		Battery diagnosis request was ignored (Ignition switch does not turn to ON (READY).) Toyota Prius Vehicle Control History Data: Hybrid/EV Battery Check Status Light Request If a value of "6" or higher is displayed for this item and no other conditions are preventing the ignition switch from being turned to ON (READY), the ignition switch cannot be turned to ON (READY) due to Battery Diagnosis not being performed and the Toyota Prius vehicle being driven for a certain amount of time after "Maintenance Required for Traction Battery at Your Dealer" was displayed on the multi-information display. Countermeasures: Perform Battery Diagnosis using the GTS.	-
		High voltage wire harness between HV supply stack sub-assemblies is disconnected (Ignition switch does not turn to ON (READY).) Toyota Prius Vehicle Control History Data: High Voltage Line between Stack Engaged If "ON" is displayed for this item, the ignition switch cannot be turned to ON (READY) as the high voltage wire harness connecting 2 or more HV supply stack sub-assemblies is disconnected. Countermeasures: Inspect the high voltage wire harnesses connecting the HV supply stack sub-assemblies.	-
		Excessive engine cranking requests when HV battery cannot be used (Ignition switch does not turn to ON (READY).) Toyota Prius Vehicle Control History Data: Number of Cranking when No Hybrid/EV Battery If a value higher than "15" is displayed for this item, the ignition switch cannot be turned to ON (READY) as engine cranking operation requests have exceeded a threshold when the HV battery could not be used. Countermeasures: Repair the malfunctions indicated by the output DTCs and clear the DTCs.	-
		Extremely low HV battery temperature judgment (Ignition switch does not turn to ON (READY).) Toyota Prius Vehicle Control History Data: Hybrid/EV Battery Extremely Low Temperature Judgement If "ON" is displayed for this item, the ignition switch cannot be turned to ON (READY) as the temperature of the HV battery is extremely low. The values of "HV/EV Battery Temperature 1 to 15" can be used as a reference. Countermeasures: Wait for the HV battery temperature to increase.	-
		High HV battery cell voltage (The ignition switch is slow to turn to ON (READY).) Toyota Prius Vehicle Control History Data: Hybrid/EV Battery Stack 1 Cell Maximum Voltage Hybrid/EV Battery Stack 2 Cell Maximum Voltage Hybrid/EV Battery Stack 3 Cell Maximum Voltage Countermeasures: Perform troubleshooting for any DTCs that are output.	-
		Low HV battery cell voltage (The ignition switch is slow to turn to ON (READY).) Toyota Prius Vehicle Control History Data: Hybrid/EV Battery Stack 1 Cell Minimum Voltage Hybrid/EV Battery Stack 2 Cell Minimum Voltage Hybrid/EV Battery Stack 3 Cell Minimum Voltage Countermeasures: Perform troubleshooting for any DTCs that are output.	-
X0570	Limit to Charge / Discharge Control Value by Hybrid/EV Battery	History of limited charging and discharging control power with the HV battery temperature high Battery current is limited when the HV battery temperature rises for some reason, such as high ambient temperature or continued driving under high loads (driving up or down slopes, driving while accelerating or decelerating) In this case the value of WIN/WOUT will decrease and the engine will stop and start less frequently. Toyota Prius Vehicle Control History Data: WIN Control Limit Power WOUT Control Limit Power Hybrid/EV Battery Temperature 1 to 15 (The HV battery temperature may rise due to the high ambient temperature) Countermeasures: If this Vehicle Control History item is stored, perform the following inspections. Check the Toyota Prius Vehicle Control History freeze frame data. This Vehicle Control History item may be stored if the temperature of the HV battery became high due to certain conditions, such as if the ambient temperature was high or the vehicle was driven continuously under high load (such as mountain driving or frequent acceleration/deceleration). Explain to the customer that this is not a malfunction.	-

CHECK Toyota Prius Vehicle CONTROL HISTORY (SRS AIRBAG)

HINT:

A part of the control history can be confirmed using the vehicle control history.

Click here

System Voltage (BATT) Circuit Short to Ground or Open (P056014)

DESCRIPTION

Auxiliary battery power is supplied to the AM terminal of the battery ECU assembly in order to store DTCs and freeze frame data. Even if the ignition switch is turned off, back-up power is supplied.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P056014

System Voltage (BATT) Circuit Short to Ground or Open

Malfunction in the battery ECU assembly back-up power source circuit

(1 trip detection logic)

Wire harness or connector
Battery ECU assembly
Fuse

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0562

MONITOR DESCRIPTION

If a period of time has elapsed with a low voltage at the AM terminal of the battery ECU assembly, the battery ECU assembly will determine that a malfunction has occurred in the back-up power supply system, and it will store a DTC. The MIL will illuminate the next time the engine is started.

MONITOR STRATEGY

Related DTCs	P0562 (INF P056014): System voltage (battery energy control module)
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0562 (INF P056014) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and turn the GTS on.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

Be sure to check that the applicable DTC is output from the hybrid battery system.
After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK FUSE (PHV BATT)

Pre-procedure1

(a) Remove the PHV BATT fuse from the fuse block assembly.

Procedure1

(b) Check if there is an open circuit in the PHV BATT fuse in the fuse block assembly.

OK:

There is no open circuit in the PHV BATT fuse.

Post-procedure1

REPLACE FUSE (PHV BATT)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery ECU assembly connector.

HINT:

Click here

OK:

The connectors are connected securely and there are no contact pressure problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

3.	CHECK HARNESS AND CONNECTOR (AM VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition	Result
x3-1 (AM) - x3-25 (GND)	Ignition switch off	11 to 14 V	V

Post-procedure1

(f) Disconnect the cable from the negative (-) auxiliary battery terminal.

(g) Reconnect the battery ECU assembly connector.

(h) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

4.	CHECK HARNESS AND CONNECTOR (PHV BATT FUSE - BATTERY TERMINAL)

Pre-procedure1

(a) Remove the PHV BATT fuse from the fuse block assembly.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition	Result
PHV BATT fuse terminal 1 - Auxiliary battery positive ( ) cable	Ignition switch off	Below 1 Ω	Ω
PHV BATT fuse terminal 1 - Body ground	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Connect the cable to the positive ( ) auxiliary battery terminal.

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Install the PHV BATT fuse.

REPAIR OR REPLACE HARNESS OR CONNECTOR (PHV BATT FUSE - BATTERY ECU ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR (PHV BATT FUSE - BATTERY TERMINAL)

Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid (P060629)

DESCRIPTION

The battery ECU assembly monitors its internal operation and will store a DTC when it detects an internal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P060629

Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid

ECU internal malfunction

(1 trip detection logic)

Battery ECU assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0606

MONITOR DESCRIPTION

The battery ECU assembly monitors its internal operation. If the internal operation is malfunctioning, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0606 (INF P060629): Control module processor (battery energy control module)
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0606 (INF P060629) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 30 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

PROCEDURE

1.	REPLACE BATTERY ECU ASSEMBLY

HINT:

Click here

COMPLETED

Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground (P0A9B11,...,P0CB215)

DESCRIPTION

The battery temperature sensors are provided at 15 locations of the HV battery. The resistance of the thermistor, which is built into each battery temperature sensor, varies in accordance with changes in the HV battery temperature. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery ECU assembly detects the HV battery temperature using the battery temperature sensor, and performs HV battery refrigerant cooling control (HV battery refrigerant cooling control starts when the HV battery temperature rises to a certain level).

Temperature Sensor Identification Cross Reference Table:

DTC Title Sensor	Battery Temperature Sensor	GTS Display
A	0	1
B	1	2
C	2	3
D	3	4
E	4	5
F	5	6
G	6	7
H	7	8
I	8	9
J	9	10
K	10	11
L	11	12
M	12	13
N	13	14
O	14	15

HINT:

Use the reference table above to determine which battery temperature sensor corresponds to each DTC. For example, sensor A in the DTC title column is battery temperature sensor 0. This sensor is displayed as Hybrid/EV Battery Temperature 1 in the Data List.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P0A9B11	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9D
P0A9B15	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9E
P0AC511	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC7
P0AC515	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC8
P0ACA11	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACC
P0ACA15	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACD
P0AE811	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AEA
P0AE815	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AEB
P0BC211	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC4
P0BC215	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC5
P0C3311	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C35
P0C3315	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C36
P0C7C11	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7E
P0C7C15	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7F
P0C8111	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C83
P0C8115	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C84
P0C8811	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8A
P0C8815	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8B
P0C8D11	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8F
P0C8D15	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C90
P0C9211	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C94
P0C9215	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C95
P0C9711	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C99
P0C9715	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C9A
P0CA811	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAA
P0CA815	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAB
P0CAD11	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAF
P0CAD15	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB0
P0CB211	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Ground	The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB4
P0CB215	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Auxiliary Battery or Open	The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB5

Temperature Displayed	Malfunction
Below -50°C (-58°F)	Open or B short circuit
95°C (203°F) or more	GND short circuit

HINT:

After checking for the above DTCs, check the hybrid system Data List item "Hybrid/EV Battery Temperature" using the GTS.
If the Toyota Prius vehicle as is left as is for 24 hours, the value of "Hybrid/EV Battery Temperature" will be almost the same as the ambient temperature.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a HV battery temperature sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0A9D (INF P0A9B11), P0AC7 (INF P0AC511), P0ACC (INF P0ACA11), P0AEA (INF P0AE811), P0BC4 (INF P0BC211), P0C35 (INF P0C3311), P0C7E (INF P0C7C11), P0C83 (INF P0C8111), P0C8A (INF P0C8811), P0C8F (INF P0C8D11), P0C94 (INF P0C9211), P0C99 (INF P0C9711), P0CAA (INF P0CA811), P0CAF (INF P0CAD11), P0CB4 (INF P0CB211): Battery temperature sensor circuit malfunction (GND short) P0A9E (INF P0A9B15), P0AC8 (INF P0AC515), P0ACD (INF P0ACA15), P0AEB (INF P0AE815), P0BC5 (INF P0BC215), P0C36 (INF P0C3315), P0C7F (INF P0C7C15), P0C84 (INF P0C8115), P0C8B (INF P0C8815), P0C90 (INF P0C8D15), P0C95 (INF P0C9215), P0C9A (INF P0C9715), P0CAB (INF P0CA815), P0CB0 (INF P0CAD15), P0CB5 (INF P0CB215): Battery temperature sensor circuit malfunction (open)
Required sensors/components	Battery temperature sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0A9D (INF P0A9B11) is not detected

DTC P0AC7 (INF P0AC511) is not detected

DTC P0ACC (INF P0ACA11) is not detected

DTC P0AEA (INF P0AE811) is not detected

DTC P0BC4 (INF P0BC211) is not detected

DTC P0C35 (INF P0C3311) is not detected

DTC P0C7E (INF P0C7C11) is not detected

DTC P0C83 (INF P0C8111) is not detected

DTC P0C8A (INF P0C8811) is not detected

DTC P0C8F (INF P0C8D11) is not detected

DTC P0C94 (INF P0C9211) is not detected

DTC P0C99 (INF P0C9711) is not detected

DTC P0CAA (INF P0CA811) is not detected

DTC P0CAF (INF P0CAD11) is not detected

DTC P0CB4 (INF P0CB211) is not detected

DTC P0A9E (INF P0A9B15) is not detected

DTC P0AC8 (INF P0AC515) is not detected

DTC P0ACD (INF P0ACA15) is not detected

DTC P0AEB (INF P0AE815) is not detected

DTC P0BC5 (INF P0BC215) is not detected

DTC P0C36 (INF P0C3315) is not detected

DTC P0C7F (INF P0C7C15) is not detected

DTC P0C84 (INF P0C8115) is not detected

DTC P0C8B (INF P0C8815) is not detected

DTC P0C90 (INF P0C8D15) is not detected

DTC P0C95 (INF P0C9215) is not detected

DTC P0C9A (INF P0C9715) is not detected

DTC P0CAB (INF P0CA815) is not detected

DTC P0CB0 (INF P0CAD15) is not detected

DTC P0CB5 (INF P0CB215) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0A9B11, P0A9B15, P0AC511, P0AC515, P0ACA11, P0ACA15, P0AE811, P0AE815, P0BC211, P0BC215, P0C3311, P0C3315, P0C7C11, P0C7C15, P0C8111, P0C8115, P0C8811, P0C8815, P0C8D11, P0C8D15, P0C9211, P0C9215, P0C9711, P0C9715, P0CA811, P0CA815, P0CAD11, P0CAD15, P0CB211 or P0CB215" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	READ VALUE USING GTS (HYBRID/EV BATTERY TEMPERATURE)

Pre-procedure1

(a) None

Procedure1

(b) Read the Data List.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Temperature 1
Hybrid/EV Battery Temperature 2
Hybrid/EV Battery Temperature 3
Hybrid/EV Battery Temperature 4
Hybrid/EV Battery Temperature 5
Hybrid/EV Battery Temperature 6
Hybrid/EV Battery Temperature 7
Hybrid/EV Battery Temperature 8
Hybrid/EV Battery Temperature 9
Hybrid/EV Battery Temperature 10
Hybrid/EV Battery Temperature 11
Hybrid/EV Battery Temperature 12
Hybrid/EV Battery Temperature 13
Hybrid/EV Battery Temperature 14
Hybrid/EV Battery Temperature 15

HINT:

A malfunctioning sensor (battery temperature sensor 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) can be determined by comparing the output temperature of the 15 battery temperature sensors.

Post-procedure1

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P0A9B11, P0A9B15, P0AC511, P0AC515, P0ACA11, P0ACA15, P0AE811, P0AE815, P0BC211 or P0BC215" is also output.	A
"P0C3311, P0C3315, P0C7C11, P0C7C15, P0C8111, P0C8115, P0C8811, P0C8815, P0C8D11 or P0C8D15" is also output.	B
"P0C9211, P0C9215, P0C9711, P0C9715, P0CA811, P0CA815, P0CAD11, P0CAD15, P0CB211 or P0CB215" is also output.	C

GO TO STEP 6

GO TO STEP 7

5.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 0 to 4)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 4).

Tester Connection:

Click Location & Routing(z18) Click Connector(z18)

Tester Connection	Battery Temperature Sensor
z18-21 (TB0) - z18-20 (GB0)	0
z18-19 (TB1) - z18-18 (GB1)	1
z18-11 (TB2) - z18-12 (GB2)	2
z18-9 (TB3) - z18-10 (GB3)	3
z18-7 (TB4) - z18-8 (GB4)	4

Standard Resistance:

Thermistor Temperature	Condition	Specified Condition
0 to 10°C (32 to 50°F)	Ignition switch off	17.7 to 27.8 kΩ
10 to 20°C (50 to 68°F)	Ignition switch off	12.0 to 18.2 kΩ
20 to 30°C (68 to 86°F)	Ignition switch off	8.22 to 12.2 kΩ
30 to 40°C (86 to 104°F)	Ignition switch off	5.74 to 8.41 kΩ
40 to 50°C (104 to 122°F)	Ignition switch off	4.09 to 5.91 kΩ

Procedure2

(e) Measure the resistance according to the value (s) in the table below.

Standard Resistance:

Click Location & Routing(z18) Click Connector(z18)

Tester Connection	Condition	Specified Condition
z18-21 (TB0) - Body ground and other terminals (except z18-20 (GB0))	Ignition switch off	10 kΩ or higher
z18-19 (TB1) - Body ground and other terminals (except z18-18 (GB1))	Ignition switch off	10 kΩ or higher
z18-11 (TB2) - Body ground and other terminals (except z18-12 (GB2))	Ignition switch off	10 kΩ or higher
z18-9 (TB3) - Body ground and other terminals (except z18-10 (GB3))	Ignition switch off	10 kΩ or higher
z18-7 (TB4) - Body ground and other terminals (except z18-8 (GB4))	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value (s) in the table below.

Standard Voltage:

Click Location & Routing(z18) Click Connector(z18)

Tester Connection	Switch Condition	Specified Condition
z18-21 (TB0) - Body ground	Ignition switch ON	Below 1 V
z18-19 (TB1) - Body ground	Ignition switch ON	Below 1 V
z18-11 (TB2) - Body ground	Ignition switch ON	Below 1 V
z18-9 (TB3) - Body ground	Ignition switch ON	Below 1 V
z18-7 (TB4) - Body ground	Ignition switch ON	Below 1 V
z18-20 (GB0) - Body ground	Ignition switch ON	Below 1 V
z18-18 (GB1) - Body ground	Ignition switch ON	Below 1 V
z18-12 (GB2) - Body ground	Ignition switch ON	Below 1 V
z18-10 (GB3) - Body ground	Ignition switch ON	Below 1 V
z18-8 (GB4) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery voltage sensor connector.

(l) Disconnect the SST.

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

6.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 5 to 9)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 5 to 9).

Tester Connection:

Click Location & Routing(z20) Click Connector(z20)

Tester Connection	Battery Temperature Sensor
z20-4 (TB5) - z20-3 (GB5)	5
z20-17 (TB6) - z20-27 (GB6)	6
z20-15 (TB7) - z20-16 (GB7)	7
z20-25 (TB8) - z20-26 (GB8)	8
z20-13 (TB9) - z20-14 (GB9)	9

Standard Resistance:

Thermistor Temperature	Condition	Specified Condition
0 to 10°C (32 to 50°F)	Ignition switch off	17.7 to 27.8 kΩ
10 to 20°C (50 to 68°F)	Ignition switch off	12.0 to 18.2 kΩ
20 to 30°C (68 to 86°F)	Ignition switch off	8.22 to 12.2 kΩ
30 to 40°C (86 to 104°F)	Ignition switch off	5.74 to 8.41 kΩ
40 to 50°C (104 to 122°F)	Ignition switch off	4.09 to 5.91 kΩ

Procedure2

(e) Measure the resistance according to the value (s) in the table below.

Standard Resistance:

Click Location & Routing(z20) Click Connector(z20)

Tester Connection	Condition	Specified Condition
z20-4 (TB5) - Body ground and other terminals (except z20-3 (GB5))	Ignition switch off	10 kΩ or higher
z20-17 (TB6) - Body ground and other terminals (except z20-27 (GB6))	Ignition switch off	10 kΩ or higher
z20-15 (TB7) - Body ground and other terminals (except z20-16 (GB7))	Ignition switch off	10 kΩ or higher
z20-25 (TB8) - Body ground and other terminals (except z20-26 (GB8))	Ignition switch off	10 kΩ or higher
z20-13 (TB9) - Body ground and other terminals (except z20-14 (GB9))	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value (s) in the table below.

Standard Voltage:

Click Location & Routing(z20) Click Connector(z20)

Tester Connection	Switch Condition	Specified Condition
z20-4 (TB5) - Body ground	Ignition switch ON	Below 1 V
z20-17 (TB6) - Body ground	Ignition switch ON	Below 1 V
z20-15 (TB7) - Body ground	Ignition switch ON	Below 1 V
z20-25 (TB8) - Body ground	Ignition switch ON	Below 1 V
z20-13 (TB9) - Body ground	Ignition switch ON	Below 1 V
z20-3 (GB5) - Body ground	Ignition switch ON	Below 1 V
z20-27 (GB6) - Body ground	Ignition switch ON	Below 1 V
z20-16 (GB7) - Body ground	Ignition switch ON	Below 1 V
z20-26 (GB8) - Body ground	Ignition switch ON	Below 1 V
z20-14 (GB9) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery voltage sensor connector.

(l) Disconnect the SST.

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

7.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 10 to 14)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 10 to 14).

Tester Connection:

Click Location & Routing(z22) Click Connector(z22)

Tester Connection	Battery Temperature Sensor
z22-19 (TB10) - z22-30 (GB10)	10
z22-5 (TB11) - z22-18 (GB11)	11
z22-17 (TB12) - z22-16 (GB12)	12
z22-15 (TB13) - z22-14 (GB13)	13
z22-13 (TB14) - z22-12 (GB14)	14

Standard Resistance:

Thermistor Temperature	Condition	Specified Condition
0 to 10°C (32 to 50°F)	Ignition switch off	17.7 to 27.8 kΩ
10 to 20°C (50 to 68°F)	Ignition switch off	12.0 to 18.2 kΩ
20 to 30°C (68 to 86°F)	Ignition switch off	8.22 to 12.2 kΩ
30 to 40°C (86 to 104°F)	Ignition switch off	5.74 to 8.41 kΩ
40 to 50°C (104 to 122°F)	Ignition switch off	4.09 to 5.91 kΩ

Procedure2

(e) Measure the resistance according to the value (s) in the table below.

Standard Resistance:

Click Location & Routing(z22) Click Connector(z22)

Tester Connection	Condition	Specified Condition
z22-19 (TB10) - Body ground and other terminals (except z22-30 (GB10))	Ignition switch off	10 kΩ or higher
z22-5 (TB11) - Body ground and other terminals (except z22-18 (GB11))	Ignition switch off	10 kΩ or higher
z22-17 (TB12) - Body ground and other terminals (except z22-16 (GB12))	Ignition switch off	10 kΩ or higher
z22-15 (TB13) - Body ground and other terminals (except z22-14 (GB13))	Ignition switch off	10 kΩ or higher
z22-13 (TB14) - Body ground and other terminals (except z22-12 (GB14))	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value (s) in the table below.

Standard Voltage:

Click Location & Routing(z22) Click Connector(z22)

Tester Connection	Switch Condition	Specified Condition
z22-19 (TB10) - Body ground	Ignition switch ON	Below 1 V
z22-5 (TB11) - Body ground	Ignition switch ON	Below 1 V
z22-17 (TB12) - Body ground	Ignition switch ON	Below 1 V
z22-15 (TB13) - Body ground	Ignition switch ON	Below 1 V
z22-13 (TB14) - Body ground	Ignition switch ON	Below 1 V
z22-30 (GB10) - Body ground	Ignition switch ON	Below 1 V
z22-18 (GB11) - Body ground	Ignition switch ON	Below 1 V
z22-16 (GB12) - Body ground	Ignition switch ON	Below 1 V
z22-14 (GB13) - Body ground	Ignition switch ON	Below 1 V
z22-12 (GB14) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery voltage sensor connector.

(l) Disconnect the SST.

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range (P0A9B1C,...,P0CB21C)

DESCRIPTION

Refer to the description for DTC P0A9B11.

Click here

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P0A9B1C	Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range	The performance of battery temperature sensor 0 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9C
P0AC51C	Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range	The performance of battery temperature sensor 1 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC6
P0ACA1C	Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range	The performance of battery temperature sensor 2 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACB
P0AE81C	Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range	The performance of battery temperature sensor 3 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AE9
P0BC21C	Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range	The performance of battery temperature sensor 4 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC3
P0C331C	Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range	The performance of battery temperature sensor 5 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C34
P0C7C1C	Hybrid/EV Battery Temperature Sensor "G" Voltage Out of Range	The performance of battery temperature sensor 6 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7D
P0C811C	Hybrid/EV Battery Temperature Sensor "H" Voltage Out of Range	The performance of battery temperature sensor 7 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C82
P0C881C	Hybrid/EV Battery Temperature Sensor "I" Voltage Out of Range	The performance of battery temperature sensor 8 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C89
P0C8D1C	Hybrid/EV Battery Temperature Sensor "J" Voltage Out of Range	The performance of battery temperature sensor 9 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8E
P0C921C	Hybrid/EV Battery Temperature Sensor "K" Voltage Out of Range	The performance of battery temperature sensor 10 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C93
P0C971C	Hybrid/EV Battery Temperature Sensor "L" Voltage Out of Range	The performance of battery temperature sensor 11 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C98
P0CA81C	Hybrid/EV Battery Temperature Sensor "M" Voltage Out of Range	The performance of battery temperature sensor 12 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CA9
P0CAD1C	Hybrid/EV Battery Temperature Sensor "N" Voltage Out of Range	The performance of battery temperature sensor 13 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAE
P0CB21C	Hybrid/EV Battery Temperature Sensor "O" Voltage Out of Range	The performance of battery temperature sensor 14 is abnormal; the difference in output between it and other battery temperature sensors is excessively large. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB3

HINT:

If the Toyota Prius vehicle as is left as is for 24 hours, the value of "Hybrid/EV Battery Temperature" will be almost the same as the ambient temperature.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in the HV battery temperature sensor, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0A9C (INF P0A9B1C), P0AC6 (INF P0AC51C), P0ACB (INF P0ACA1C), P0AE9 (INF P0AE81C), P0BC3 (INF P0BC21C), P0C34 (INF P0C331C), P0C7D (INF P0C7C1C), P0C82 (INF P0C811C), P0C89 (INF P0C881C), P0C8E (INF P0C8D1C), P0C93 (INF P0C921C), P0C98 (INF P0C971C), P0CA9 (INF P0CA81C), P0CAE (INF P0CAD1C), P0CB3 (INF P0CB21C): Battery temperature sensor malfunction (stuck)
Required sensors/components	Battery temperature sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0A9C (INF P0A9B1C) is not detected

DTC P0AC6 (INF P0AC51C) is not detected

DTC P0ACB (INF P0ACA1C) is not detected

DTC P0AE9 (INF P0AE81C) is not detected

DTC P0BC3 (INF P0BC21C) is not detected

DTC P0C34 (INF P0C331C) is not detected

DTC P0C7D (INF P0C7C1C) is not detected

DTC P0C82 (INF P0C811C) is not detected

DTC P0C89 (INF P0C881C) is not detected

DTC P0C8E (INF P0C8D1C) is not detected

DTC P0C93 (INF P0C921C) is not detected

DTC P0C98 (INF P0C971C) is not detected

DTC P0CA9 (INF P0CA81C) is not detected

DTC P0CAE (INF P0CAD1C) is not detected

DTC P0CB3 (INF P0CB21C) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A9B11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0A9B1C, P0AC51C, P0ACA1C, P0AE81C, P0BC21C, P0C331C, P0C7C1C, P0C811C, P0C881C, P0C8D1C, P0C921C, P0C971C, P0CA81C, P0CAD1C or P0CB21C" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

(b) Turn the ignition switch off.

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P0A9B1C, P0AC51C, P0ACA1C, P0AE81C or P0BC21C" is also output.	A
"P0C331C, P0C7C1C, P0C811C, P0C881C or P0C8D1C" is also output.	B
"P0C921C, P0C971C, P0CA81C, P0CAD1C or P0CB21C" is also output.	C

GO TO STEP 4

GO TO STEP 5

3.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 0 to 4)

Click here

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

4.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 5 to 9)

Click here

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

5.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 10 to 14)

Click here

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range (P0A9B2A,...,P306B62)

DESCRIPTION

Refer to the description for DTC P0A9B11.

Click here

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P0A9B2A	Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range	The performance of battery temperature sensor 0 is abnormal and its output is stuck. (2 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0A9C
P0AC52A	Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range	The performance of battery temperature sensor 1 is abnormal and its output is stuck. (2 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC6
P0ACA2A	Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range	The performance of battery temperature sensor 2 is abnormal and its output is stuck. (2 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0ACB
P0AE82A	Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range	The performance of battery temperature sensor 3 is abnormal and its output is stuck. (2 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AE9
P0BC22A	Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range	The performance of battery temperature sensor 4 is abnormal and its output is stuck. (2 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0BC3
P0C332A	Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range	The performance of battery temperature sensor 5 is abnormal and its output is stuck. (2 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C34
P0C7C2A	Hybrid/EV Battery Temperature Sensor "G" Signal Stuck In Range	The performance of battery temperature sensor 6 is abnormal and its output is stuck. (2 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C7D
P0C812A	Hybrid/EV Battery Temperature Sensor "H" Signal Stuck In Range	The performance of battery temperature sensor 7 is abnormal and its output is stuck. (2 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C82
P0C882A	Hybrid/EV Battery Temperature Sensor "I" Signal Stuck In Range	The performance of battery temperature sensor 8 is abnormal and its output is stuck. (2 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C89
P0C8D2A	Hybrid/EV Battery Temperature Sensor "J" Signal Stuck In Range	The performance of battery temperature sensor 9 is abnormal and its output is stuck. (2 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C8E
P0C922A	Hybrid/EV Battery Temperature Sensor "K" Signal Stuck In Range	The performance of battery temperature sensor 10 is abnormal and its output is stuck. (2 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C93
P0C972A	Hybrid/EV Battery Temperature Sensor "L" Signal Stuck In Range	The performance of battery temperature sensor 11 is abnormal and its output is stuck. (2 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C98
P0CA82A	Hybrid/EV Battery Temperature Sensor "M" Signal Stuck In Range	The performance of battery temperature sensor 12 is abnormal and its output is stuck. (2 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CA9
P0CAD2A	Hybrid/EV Battery Temperature Sensor "N" Signal Stuck In Range	The performance of battery temperature sensor 13 is abnormal and its output is stuck. (2 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CAE
P0CB22A	Hybrid/EV Battery Temperature Sensor "O" Signal Stuck In Range	The performance of battery temperature sensor 14 is abnormal and its output is stuck. (2 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CB3
P306562	Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure	The performance of any battery temperature sensor (0 to 4) is abnormal and the difference in output between it and each other battery temperature sensor is excessively large. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P3065
P306A62	Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure	The performance of any battery temperature sensor (5 to 9) is abnormal and the difference in output between it and each other battery temperature sensor is excessively large. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P306A
P306B62	Hybrid/EV Battery Temperature Sensor "Group 3" Signal Compare Failure	The performance of any battery temperature sensor (10 to 14) is abnormal and the difference in output between it and each other battery temperature sensor is excessively large. (1 trip detection logic)	No. 3 HV supply stack sub-assembly Battery voltage sensor	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P306B

HINT:

If the Toyota Prius vehicle as is left as is for 24 hours, the value of "Hybrid/EV Battery Temperature" will be almost the same as the ambient temperature.

The following items can be helpful when performing repairs:

Data List

Vehicle Speed
Ambient Temperature

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in the HV battery temperature sensor, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0A9C (INF P0A9B2A), P0AC6 (INF P0AC52A), P0ACB (INF P0ACA2A), P0AE9 (INF P0AE82A), P0BC3 (INF P0BC22A), P0C34 (INF P0C332A), P0C7D (INF P0C7C2A), P0C82 (INF P0C812A), P0C89 (INF P0C882A), P0C8E (INF P0C8D2A), P0C93 (INF P0C922A), P0C98 (INF P0C972A), P0CA9 (INF P0CA82A), P0CAE (INF P0CAD2A), P0CB3 (INF P0CB22A): Battery temperature sensor malfunction (stuck) P3065 (INF P306562), P306A (INF P306A62), P306B (INF P306B62): Battery temperature sensor malfunction (deviation)
Required sensors/components	Battery temperature sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle / 2 driving cycles
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0A9C (INF P0A9B2A) is not detected

DTC P0AC6 (INF P0AC52A) is not detected

DTC P0ACB (INF P0ACA2A) is not detected

DTC P0AE9 (INF P0AE82A) is not detected

DTC P0BC3 (INF P0BC22A) is not detected

DTC P0C34 (INF P0C332A) is not detected

DTC P0C7D (INF P0C7C2A) is not detected

DTC P0C82 (INF P0C812A) is not detected

DTC P0C89 (INF P0C882A) is not detected

DTC P0C8E (INF P0C8D2A) is not detected

DTC P0C93 (INF P0C922A) is not detected

DTC P0C98 (INF P0C972A) is not detected

DTC P0CA9 (INF P0CA82A) is not detected

DTC P0CAE (INF P0CAD2A) is not detected

DTC P0CB3 (INF P0CB22A) is not detected

DTC P3065 (INF P306562) is not detected

DTC P306A (INF P306A62) is not detected

DTC P306B (INF P306B62) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

P0A9B2A, P0AC52A, P0ACA2A, P0AE82A, P0BC22A, P0C332A, P0C7C2A, P0C812A, P0C882A, P0C8D2A, P0C922A, P0C972A, P0CA82A, P0CAD2A, P0CB22A:

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Accelerator Position", "Hybrid/EV Battery Temperature 1 to 15" and "Hybrid/EV Battery Current" when ambient temperature is -10°C (14°F) or higher.[*1]
HINT:
- Check that the output of each battery temperature sensor varies.
- Check that the difference in output between each battery temperature sensor is not excessively large.
- [*1]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

P306562, P306A62, P306B62:

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more when the ambient temperature is -10°C (14°F) or higher.[*1]
HINT:
- Check that the difference in output between each battery temperature sensor is not excessively large.
- [*1]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A9B11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	INSPECT HV SUPPLY BATTERY ASSEMBLY

HINT:

Click here

2.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0A9B2A, P0AC52A, P0ACA2A, P0AE82A, P0BC22A, P0C332A, P0C7C2A, P0C812A, P0C882A, P0C8D2A, P0C922A, P0C972A, P0CA82A, P0CAD2A, P0CB22A, P306562, P306A62 or P306B62" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P0A9B2A, P0AC52A, P0ACA2A, P0AE82A, P0BC22A or P306562" is also output.	A
"P0C332A, P0C7C2A, P0C812A, P0C882A, P0C8D2A or P306A62" is also output.	B
"P0C922A, P0C972A, P0CA82A, P0CAD2A, P0CB22A or P306B62" is also output.	C

GO TO STEP 5

GO TO STEP 6

4.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 0 to 4)

Click here

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

5.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 5 to 9)

Click here

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

6.	CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 10 to 14)

Click here

REPLACE BATTERY VOLTAGE SENSOR

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure (P0AA749)

DESCRIPTION

The hybrid vehicle control ECU monitors the insulation monitoring circuit located in the battery ECU assembly and detects malfunctions.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0AA749

Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure

Malfunction in the insulation monitoring circuit (output is above threshold during self diagnosis)

(1 trip detection logic)

Battery ECU assembly
Battery voltage sensor
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0AA7

MONITOR DESCRIPTION

A malfunction will be detected and the MIL illuminated if any of the following conditions are met :

P0AA749: The voltage of hybrid/EV battery voltage isolation sensor is higher than the threshold during the rationality check.

MONITOR STRATEGY

Related DTCs	P0AA7 (INF P0AA749): Hybrid Battery Voltage Isolation Sensor Circuit
Required sensors/components	Hybrid/EV battery voltage isolation sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0AA7 (INF P0AA749) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 70 seconds or more. [*1]
HINT:

[*1] : Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CLEAR DTC (HV BATTERY)

Click here

2.	SIMULATION TEST

Pre-procedure1

(a) Turn the ignition switch to ON and wait for 70 seconds or more.

NOTICE:

Do not turn the ignition switch off until step 3 is complete.

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
P0AA749 is not output	A
P0AA749 is output	B

Post-procedure1

GO TO STEP 4

3.	SIMULATION TEST

NOTICE:

Do not turn the ignition switch off while performing this inspection.

Pre-procedure1

(a) With the Toyota Prius vehicle and engine stopped, turn the ignition switch to ON (READY) with park (P) selected and wait for 70 seconds or more. (If the engine starts, wait until the engine stops.)

(b) While depressing the brake pedal without depressing the accelerator pedal, move the shift lever to D and wait for 1 minute. (Step A)

(d) Drive the vehicle another 0.5 m (1.6 ft.) forward and perform step A. Repeat this procedure 5 times (minimum total driving distance: 2 m (6.6 ft.)).

Procedure1

(e) Check if DTCs are output.

Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
P0AA649 is not output	A
P0AA649 is output	B

Post-procedure1

(f) None

REPLACE BATTERY ECU ASSEMBLY AND BATTERY VOLTAGE SENSOR

Battery ECU assembly: Click here

Battery voltage sensor: Click here

GO TO DTC CHART (P0AA649)

4.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BATTERY VOLTAGE SENSOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

CAUTION:

When disconnecting connector x6 of the battery voltage sensor, first disconnect connectors z17, z18, z19, z20, z21 and z22 from the battery voltage sensor.

NOTICE:

Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x1,x6) Click Connector(x1) Click Connector(x6)

Tester Connection	Condition	Specified Condition	Result
x1-18 (VLKB) - x6-1 (VLKB)	Ignition switch off	Below 1 Ω	Ω
x1-37 (VLKG) - x6-25 (VLKG)	Ignition switch off	Below 1 Ω	Ω
x1-25 (VLS0) - x6-12 (VHS0)	Ignition switch off	Below 1 Ω	Ω
x1-26 (VHS1) - x6-35 (VHS1)	Ignition switch off	Below 1 Ω	Ω

Post-procedure1

(e) Reconnect the o8 battery voltage sensor connector.

CAUTION:

When connecting connectors z17, z18, z19, z20, z21 and z22 of the battery voltage sensor, first connect connector x6 to the battery voltage sensor.

(f) Reconnect the battery ECU assembly connector.

REPLACE BATTERY ECU ASSEMBLY AND BATTERY VOLTAGE SENSOR

Battery ECU assembly: Click here

Battery voltage sensor: Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground (P0ABF11,P0ABF15,P0B0E11,P0B0E15,P1CBB12,P1CBB14,P2BE411,P2BE415)

DESCRIPTION

A battery current sensor, which is mounted on the positive cable side of each No. 2 traction battery device box assembly, detects the current flowing to or from the battery pack. The battery current sensor sends a voltage, which varies between 0 and 5 V in proportion to the amperage, to the IB0 terminal of the battery ECU assembly. Similarly, it sends a voltage, which varies between 0 and 5 V in inverse proportion to the amperage, to the IB1 terminal of the battery ECU assembly. When the voltage at the IB0 terminal is above 1.696 V and the voltage at the IB1 terminal is below 3.304 V, this indicates that the HV battery is being discharged. Additionally, Meanwhile, when the voltage at of the IB0 terminal is below 1.696 V and the voltage at of the IB1 terminal is above 3.304 V, this indicates that the HV battery is being charged. The battery ECU assembly determines the charging and discharging amount of the HV battery based on the voltages input to the IB0 terminal and IB1 terminal and calculates the SOC of the HV battery through the accumulated amperage.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P0ABF11	Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground	The battery current sensor output voltage (IB0) is excessively low. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC1
P0ABF15	Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open	The battery current sensor output voltage (IB0) is excessively high. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0AC2
P0B0E11	Hybrid/EV Battery Current Sensor "B" Circuit Short to Ground	The battery current sensor output voltage (IB1) is excessively low. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0B10
P0B0E15	Hybrid/EV Battery Current Sensor "B" Circuit Short to Auxiliary Battery or Open	The battery current sensor output voltage (IB1) is excessively high. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0B11
P1CBB12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery	Power source voltage (VIB) of the battery current sensor is excessively high. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1CBD
P1CBB14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open	Power source voltage (VIB) of the battery current sensor is excessively low. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1CBC
P2BE411	Hybrid/EV Battery Pack Current Sensor "C" Low Circuit Short to Ground	The battery current sensor output voltage (IBL) is excessively low. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P2BE6
P2BE415	Hybrid/EV Battery Pack Current Sensor "C" High Circuit Short to Auxiliary Battery or Open	The battery current sensor output voltage (IBL) is excessively high. (1 trip detection logic)	No. 1 traction battery device box assembly Battery ECU assembly Wire harness or connector	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P2BE7

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in the battery current sensor, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0AC1 (INF P0ABF11): Hybrid/EV Battery Pack Current Sensor "A" Circuit Low P0AC2 (INF P0ABF15): Hybrid/EV Battery Pack Current Sensor "A" Circuit High P0B10 (INF P0B0E11): Hybrid/EV Battery Pack Current Sensor "B" Circuit Low P0B11 (INF P0B0E15): Hybrid/EV Battery Pack Current Sensor "B" Circuit High P1CBD (INF P1CBB12): Hybrid/EV Battery Pack Current Sensor "A" Power Supply Circuit High P1CBC (INF P1CBB14): Hybrid/EV Battery Pack Current Sensor "A" Power Supply Circuit Low P2BE6 (INF P2BE411): Hybrid/EV Battery Pack Current Sensor "C" Circuit Low P2BE7 (INF P2BE415): Hybrid/EV Battery Pack Current Sensor "C" Circuit High
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0AC1 (INF P0ABF11) is not detected

DTC P0AC2 (INF P0ABF15) is not detected

DTC P0B10 (INF P0B0E11) is not detected

DTC P0B11 (INF P0B0E15) is not detected

DTC P1CBD (INF P1CBB12) is not detected

DTC P1CBC (INF P1CBB14) is not detected

DTC P2BE6 (INF P2BE411) is not detected

DTC P2BE7 (INF P2BE415) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for ECU Power Source Circuit.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0ABF11, P0ABF15, P0B0E11, P0B0E15, P1CBB12, P1CBB14, P2BE411 or P2BE415" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK BATTERY ECU ASSEMBLY (IGCT VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition
x3-5 (IGCT) - x3-25 (GND)	Ignition switch ON	11 to 14 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

HINT:

As there might be an intermittent malfunction in the battery ECU assembly power source circuit, inspect the following even if the measured voltage is as specified:

Installation condition of fuse(s) (before removing fuse(s)) (IGCT circuit)
Fuse condition (before and after removing fuse(s)) (IGCT circuit)
Connection condition of connectors (IGCT circuit)
Wire harness condition (IGCT circuit)
Wire harness condition (GND circuit)

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the battery ECU assembly connector.

(j) Disconnect the SST.

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY ECU ASSEMBLY POWER SOURCE CIRCUIT)

3.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x11,x4) Click Connector(x11) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x11-1 (IBL) - x4-15 (IBL)	Ignition switch off	Below 1 Ω
x11-5 (IB1) - x4-17 (IB1)	Ignition switch off	Below 1 Ω
x11-4 (GIB) - x4-14 (GIB)	Ignition switch off	Below 1 Ω
x11-3 (IB0) - x4-16 (IB0)	Ignition switch off	Below 1 Ω
x11-2 (VIB) - x4-4 (VIB)	Ignition switch off	Below 1 Ω

Standard Resistance (Check for Short):

Click Location & Routing(x11,x4) Click Connector(x11) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x11-1 (IBL) or x4-15 (IBL) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-5 (IB1) or x4-17 (IB1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-4 (GIB) or x4-14 (GIB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-3 (IB0) or x4-16 (IB0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-2 (VIB) or x4-4 (VIB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK BATTERY ECU ASSEMBLY (VIB VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-4 (VIB) - x4-14 (GIB)	Ignition switch ON	4.6 to 5.4 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

GO TO STEP 17

5.	CHECK BATTERY ECU ASSEMBLY (GIB - GND)

Pre-procedure1

(a) Remove the battery ECU assembly.

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the tables below.

Component without harness connected

(Battery ECU Assembly)

Standard Resistance:

Click Location & Routing(x3,x4) Click Connector(x3) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x3-25 (GND) - x4-14 (GIB)	Ignition switch off	Below 1 Ω

Post-procedure1

REPLACE BATTERY ECU ASSEMBLY

6.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IB1))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-17 (IB1) - x4-14 (GIB)	Ignition switch ON	3.25 to 3.35 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

GO TO STEP 15

7.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IB0))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-16 (IB0) - x4-14 (GIB)	Ignition switch ON	1.65 to 1.75 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

GO TO STEP 12

8.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IBL))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-15 (IBL) - x4-14 (GIB)	Ignition switch ON	2.45 to 2.55 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

9.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IBL))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-15 (IBL) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Result	Proceed to
0.15 to 4.9 V	A
Below 0.15 V	B
4.9 V or higher	C

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

GO TO STEP 11

10.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IBL))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-15 (IBL) - x4-14 (GIB)	Ignition switch ON	4.6 to 5.4 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the No. 1 traction battery device box assembly connector.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

11.	CHECK BATTERY ECU ASSEMBLY (VIB - IBL)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x11) Click Connector(x11)

Tester Connection	Condition	Specified Condition
x11-2 (VIB) - x11-1 (IBL)	Ignition switch off	10 kΩ or higher

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

12.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IB0))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-16 (IB0) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Result	Proceed to
0.15 to 4.9 V	A
Below 0.15 V	B
4.9 V or higher	C

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

GO TO STEP 14

13.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IB0))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-16 (IB0) - x4-14 (GIB)	Ignition switch ON	4.6 to 5.4 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the No. 1 traction battery device box assembly connector.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

14.	CHECK BATTERY ECU ASSEMBLY (VIB - IB0)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x11) Click Connector(x11)

Tester Connection	Condition	Specified Condition
x11-2 (VIB) - x11-3 (IB0)	Ignition switch off	10 kΩ or higher

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

15.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IB1))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-17 (IB1) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Result:

Result	Proceed to
0.15 to 4.9 V	A
Below 0.15 V	B
4.9 V or higher	C

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

GO TO STEP 18

16.	CHECK BATTERY ECU ASSEMBLY (BATTERY CURRENT SENSOR OUTPUT VOLTAGE (IB1))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-17 (IB1) - x4-14 (GIB)	Ignition switch ON	4.6 to 5.4 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the No. 1 traction battery device box assembly connector.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

17.	CHECK BATTERY ECU ASSEMBLY (VIB VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x4-4 (VIB) - x4-14 (GIB)	Ignition switch ON	4.6 to 5.4 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (Battery ECU Assembly)

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the No. 1 traction battery device box assembly connector.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

18.	CHECK BATTERY ECU ASSEMBLY (VIB - IB1)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x11) Click Connector(x11)

Tester Connection	Condition	Specified Condition
x11-2 (VIB) - x11-5 (IB1)	Ignition switch off	10 kΩ or higher

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPLACE BATTERY ECU ASSEMBLY

Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure (P0ABF28)

DESCRIPTION

Refer to the description for DTC P0ABF11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0ABF28

Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure

The offset value of the battery current sensor is excessively large.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0AC0

When the ignition switch is ON, normally the HV battery current does not flow. If the HV battery current value is above the specification, this DTC will be stored.

HINT:

Make sure to perform Current Sensor Offset Learning after replacing a battery current sensor.
Click here
This DTC may be output if Current Sensor Offset Learning has not been completed.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a battery current sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0AC0 (INF P0ABF28): Current sensor malfunction
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0AC0 (INF P0ABF28) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
Turn the ignition switch off and wait for 2 minutes or more.[*2]
Turn the ignition switch to ON and wait for 10 seconds or more.[*3]
HINT:

[*1] to [*3]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0ABF11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0ABF28" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P062F46	Hybrid/EV Battery Energy Control Module EEPROM Calibration / Parameter Memory Failure
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (BATTERY CURRENT SENSOR (IB0))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Using a Toyota electrical tester set to 40 V, measure the VIB voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-4 (VIB) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Be sure to set the Toyota electrical tester to 40 V when performing this test.

*a	Component with harness connected (Battery ECU Assembly)

Procedure2

(f) Using a Toyota electrical tester set to 4 V, measure the IB0 voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-16 (IB0) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Be sure to set the Toyota electrical tester to 4 V when performing this test.

*a	Component with harness connected (Battery ECU Assembly)

Procedure3

(g) Compare the measured values of the IB0 terminal voltage and VIB terminal voltage using the following formula:

IB0 voltage - 0.34 X VIB voltage = less than 0.05 V

IB0 voltage - 0.34 X VIB voltage = -0.05 V or higher

Result	Proceed to
Within the specified range above	A
Other than above	B

Post-procedure1

(h) Turn the ignition switch off.

(i) Disconnect the cable from the negative (-) auxiliary battery terminal.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

4.	CHECK NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (BATTERY CURRENT SENSOR (IB1))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Using a Toyota electrical tester set to 40 V, measure the VIB voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-4 (VIB) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Be sure to set the Toyota electrical tester to 40 V when performing this test.

*a	Component with harness connected (Battery ECU Assembly)

Procedure2

(f) Using a Toyota electrical tester set to 4 V, measure the IB1 voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-17 (IB1) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Be sure to set the Toyota electrical tester to 4 V when performing this test.

*a	Component with harness connected (Battery ECU Assembly)

Procedure3

(g) Compare the measured values of the IB1 terminal voltage and VIB terminal voltage using the following formula:

Condition
IB1 voltage - 0.66 X VIB voltage = less than 0.05 V
IB1 voltage - 0.66 X VIB voltage = -0.05 V or higher

Result	Proceed to
Within the specified range above	A
Other than above	B

Post-procedure1

(h) Turn the ignition switch off.

(i) Disconnect the cable from the negative (-) auxiliary battery terminal.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

5.	REPLACE BATTERY ECU ASSEMBLY

HINT:

Click here

6.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Turn the ignition switch off and wait for 2 minutes or more.

(e) Turn the ignition switch to ON and wait for 10 seconds or more.

7.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
DTCs are not output.	A
P0ABF28 is also output.	B

Post-procedure1

END

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range (P0ABF2A)

DESCRIPTION

Refer to the description for DTC P0ABF11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0ABF2A

Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range

The hybrid battery voltage is changing but the hybrid battery current sensor output does not change.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0AC0

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a battery current sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0AC0 (INF P0ABF2A): Current sensor malfunction
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0AC0 (INF P0ABF2A) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0ABF2A" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P0ABF11	Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground
	P0ABF15	Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open
	P0B0E11	Hybrid/EV Battery Current Sensor "B" Circuit Short to Ground
	P0B0E15	Hybrid/EV Battery Current Sensor "B" Circuit Short to Auxiliary Battery or Open
	P1CBB12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery
	P1CBB14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open
	P2BE411	Hybrid/EV Battery Pack Current Sensor "C" Low Circuit Short to Ground
	P2BE415	Hybrid/EV Battery Pack Current Sensor "C" High Circuit Short to Auxiliary Battery or Open
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1A001C, P1A051C, P1A0A1C or P301A1C" is not output.	A
"P1A001C, P1A051C, P1A0A1C or P301A1C" is also output.	B

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

3.	READ VALUE USING GTS

Pre-procedure1

(a) Turn the ignition switch to ON.

NOTICE:

Do not turn the ignition switch to ON (READY).

Procedure1

(b) Check the voltage of each "Hybrid/EV Battery Cell Voltage" of "Hybrid/EV Battery Cell 1 to 72 Voltage" in the Data List with the ignition switch ON.

NOTICE:

Select "Hybrid/EV Battery Cell 1 to 72 Voltage" only. (Do not select any other Data List items.)

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Cell 1 Voltage
Hybrid/EV Battery Cell 2 Voltage
Hybrid/EV Battery Cell 3 Voltage
Hybrid/EV Battery Cell 4 Voltage
Hybrid/EV Battery Cell 5 Voltage
Hybrid/EV Battery Cell 6 Voltage
Hybrid/EV Battery Cell 7 Voltage
Hybrid/EV Battery Cell 8 Voltage
Hybrid/EV Battery Cell 9 Voltage
Hybrid/EV Battery Cell 10 Voltage
Hybrid/EV Battery Cell 11 Voltage
Hybrid/EV Battery Cell 12 Voltage
Hybrid/EV Battery Cell 13 Voltage
Hybrid/EV Battery Cell 14 Voltage
Hybrid/EV Battery Cell 15 Voltage
Hybrid/EV Battery Cell 16 Voltage
Hybrid/EV Battery Cell 17 Voltage
Hybrid/EV Battery Cell 18 Voltage
Hybrid/EV Battery Cell 19 Voltage
Hybrid/EV Battery Cell 20 Voltage
Hybrid/EV Battery Cell 21 Voltage
Hybrid/EV Battery Cell 22 Voltage
Hybrid/EV Battery Cell 23 Voltage
Hybrid/EV Battery Cell 24 Voltage
Hybrid/EV Battery Cell 25 Voltage
Hybrid/EV Battery Cell 26 Voltage
Hybrid/EV Battery Cell 27 Voltage
Hybrid/EV Battery Cell 28 Voltage
Hybrid/EV Battery Cell 29 Voltage
Hybrid/EV Battery Cell 30 Voltage
Hybrid/EV Battery Cell 31 Voltage
Hybrid/EV Battery Cell 32 Voltage
Hybrid/EV Battery Cell 33 Voltage
Hybrid/EV Battery Cell 34 Voltage
Hybrid/EV Battery Cell 35 Voltage
Hybrid/EV Battery Cell 36 Voltage
Hybrid/EV Battery Cell 37 Voltage
Hybrid/EV Battery Cell 38 Voltage
Hybrid/EV Battery Cell 39 Voltage
Hybrid/EV Battery Cell 40 Voltage
Hybrid/EV Battery Cell 41 Voltage
Hybrid/EV Battery Cell 42 Voltage
Hybrid/EV Battery Cell 43 Voltage
Hybrid/EV Battery Cell 44 Voltage
Hybrid/EV Battery Cell 45 Voltage
Hybrid/EV Battery Cell 46 Voltage
Hybrid/EV Battery Cell 47 Voltage
Hybrid/EV Battery Cell 48 Voltage
Hybrid/EV Battery Cell 49 Voltage
Hybrid/EV Battery Cell 50 Voltage
Hybrid/EV Battery Cell 51 Voltage
Hybrid/EV Battery Cell 52 Voltage
Hybrid/EV Battery Cell 53 Voltage
Hybrid/EV Battery Cell 54 Voltage
Hybrid/EV Battery Cell 55 Voltage
Hybrid/EV Battery Cell 56 Voltage
Hybrid/EV Battery Cell 57 Voltage
Hybrid/EV Battery Cell 58 Voltage
Hybrid/EV Battery Cell 59 Voltage
Hybrid/EV Battery Cell 60 Voltage
Hybrid/EV Battery Cell 61 Voltage
Hybrid/EV Battery Cell 62 Voltage
Hybrid/EV Battery Cell 63 Voltage
Hybrid/EV Battery Cell 64 Voltage
Hybrid/EV Battery Cell 65 Voltage
Hybrid/EV Battery Cell 66 Voltage
Hybrid/EV Battery Cell 67 Voltage
Hybrid/EV Battery Cell 68 Voltage
Hybrid/EV Battery Cell 69 Voltage
Hybrid/EV Battery Cell 70 Voltage
Hybrid/EV Battery Cell 71 Voltage
Hybrid/EV Battery Cell 72 Voltage

Specified Condition:

Any "Hybrid/EV Battery Cell Voltage" changes by 0.05 V or more, 60 seconds after the ignition switch is turned to ON. (The difference between the maximum and minimum voltage is 0.05 V or more.)

Result	Proceed to
The change in voltage of any "Hybrid/EV Battery Cell Voltage" is 0.05 V or more.	A
Other than above	B

Post-procedure1

REPLACE BATTERY ECU ASSEMBLY

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure (P0B1362)

DESCRIPTION

Refer to the description for DTC P0ABF11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0B1362

Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure

A battery current sensor is malfunctioning.*1

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0B13

*1: The difference in output of the main and sub battery current sensors is large.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a battery current sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0B13 (INF P0B1362): Current sensor malfunction
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0B13 (INF P0B1362) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0B1362" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

HINT:

Click here

4.	CLEAR DTC (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

5.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
DTCs are not output.	A
P0B1362 is also output.	B

Post-procedure1

END

REPLACE BATTERY ECU ASSEMBLY

Hybrid/EV Battery State of Charge High (P0C3000)

DESCRIPTION

The battery ECU assembly monitors the operation of the hybrid battery system and will store this DTC if it detects a malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0C3000

Hybrid/EV Battery State of Charge High

Even though charging of the HV battery is prohibited due to the SOC reaching the upper limit, charging continues to be performed due to a hybrid control system malfunction.

(1 trip detection logic)

Hybrid Toyota Prius vehicle control ECU
No. 1 traction battery device box assembly

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P0C30

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.
Enter the following menus: Powertrain / HV battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AA649.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0C3000" only is output.	A
DTCs except "P0C3000" of hybrid battery system are output.	B
DTCs except "P0C3000" of hybrid control system are output.	C

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK FREEZE FRAME DATA (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Read the freeze frame data of DTC P0C3000.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
OFF is displayed for "Ready Signal", "SMRP Control Status", "SMRB Control Status" and "SMRG Control Status" and -0.5 A or less is displayed for "Hybrid/EV Battery Current".	A
Other than above	B

HINT:

As the ignition switch ON state may cause the DTC to be stored, freeze frame data is used to judge the cause of the DTC output.

Post-procedure1

REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

3.	INSPECT NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (SMRB, SMRG, SMRP)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the HV battery high voltage connector from the No. 1 traction battery device box assembly.

NOTICE:

Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

Procedure1

Component without harness connected

(No. 1 Traction Battery Device Box Assembly)

Standard Resistance (SMRB):

Click Location & Routing(w1,z25) Click Connector(w1) Click Connector(z25)

Tester Connection	Condition	Specified Condition	Result
w1-1(CBI) - z25-1( )	Ignition switch off	10 kΩ or higher	kΩ

Standard Resistance (SMRG, SMRP):

Click Location & Routing(w2,z27) Click Connector(w2) Click Connector(z27)

Tester Connection	Condition	Specified Condition	Result
w2-1(CEI) - z27-1(-)	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(d) Reconnect the HV battery high voltage connector to the No. 1 traction battery device box assembly.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

4.	PERFORM INITIALIZATION (CURRENT SENSOR OFFSET LEARNING)

Pre-procedure1

(a) Turn the ignition switch to ON (READY).

(b) Perform a road test.

NOTICE:

Accelerate/decelerate gently. Avoid rapid acceleration/deceleration.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Current

HINT:

Distance and driving time are not specified.

(d) Turn the ignition switch off and leave the Toyota Prius vehicle for 30 seconds or more.

Procedure1

(e) Check that the value of "Hybrid/EV Battery Current" is between - 0.5 A and 0.5 A with the ignition switch ON.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Current

NOTICE:

If the value is outside the specified range, perform the road test again.
This DTC may be output if Current Sensor Offset Learning has not been completed.

HINT:

If the ignition switch is ON and the value of "Hybrid/EV Battery Current" is between - 0.5 A and 0.5 A, current sensor offset learning has been completed.
Even if the current sensor offset learning is not complete, the current sensor value will be corrected by repeating the road test a maximum of 7 times.

Post-procedure1

(f) Turn the ignition switch off.

END

Hybrid/EV Battery Cooling System "A" Performance (P0C3200)

DTC SUMMARY

MALFUNCTION DESCRIPTION

Cooling performance drop malfunctions in the HV battery refrigerant cooling system are detected to prevent the HV battery temperature from rising excessively.

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0C3200

Hybrid/EV Battery Cooling System "A" Performance

While HV battery refrigerant is cooling, the HV battery temperature is high and the HV battery temperature has risen to the specified value or higher.

(2 trip detection logic)

No. 1 traction battery cooler tube (duct inlet 1)
No. 1 traction battery cooler conductor (duct outlet 1)
Battery ECU assembly
Wire harness or connector
A/C cooler pipe
HV battery cooler pipe

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0C32

MONITOR DESCRIPTION

While HV battery refrigerant is cooling, if the HV battery temperature is high and the HV battery temperature increases by the specified value or higher, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0C32 (INF P0C3200): Hybrid/EV Battery Cooling System "A" Performance
Required sensors/components	Air Conditioning Thermistor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	2 driving cycles
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0C32 (INF P0C3200) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Enter the following menus: Powertrain / HV Battery / Active Test / Hybrid/EV Battery Refrigerant Cooling Control.
Perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test for 14 minutes.[*1]
HINT:
- In order to perform "Hybrid/EV Battery Refrigerant Cooling Control", the HV battery minimum temperature must be 11°C (52°F) and the refrigerant temperature inside the HV battery must be 0°C (32°F) or higher.
  If the above conditions are not established, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the HV battery temperature.
  
  In consideration of the temperature drop after the heater stops, increase the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" to a minimum of 12°C (54°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" to 1°C (34°F) or more.
  
  (At an ambient temperature of 5°C (41°F), "Hybrid/EV Battery Heater Relay" will need to be performed for approximately 5 hours.)
- Perform this step with the A/C blower switch off.
- [*1]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL, AIR CONDITIONER)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes Body Electrical > Air Conditioner > Trouble Codes

Result	Proceed to
"P0C3200" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C
DTCs of air conditioning system in the table below are output.	D

Malfunction Content	System	Relevant DTC
Air conditioner malfunction	Air conditioning system	B138571	A/C Cooling Electric Expansion Valve Actuator Stuck
Air conditioner malfunction	Air conditioning system	P0EC971	A/C Low Pressure Magnetic Valve Actuator Stuck
Microcomputer malfunction	Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
		P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
		P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

GO TO DTC CHART (AIR CONDITIONING SYSTEM)

2.	REFRIGERANT SHORTAGE CHECK USING GTS

HINT:

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER, NO. 1 TRACTION BATTERY COOLER CONDUCTOR AND NO. 1 TRACTION BATTERY COOLER SHEET

3.	INSPECT FOR REFRIGERANT LEAK (AIR CONDITIONING SYSTEM)

(a) After recharging the air conditioning system with refrigerant, inspect for refrigerant leaks using a halogen leak detector.

Click here

OK:

No refrigerant leak

GO TO PROBLEM SYMPTOMS TABLE (AIR CONDITIONING SYSTEM)

4.	INSPECT FOR REFRIGERANT LEAK (INLET SIDE OF HV SUPPLY BATTERY ASSEMBLY)

(a) After recharging the air conditioning system with refrigerant, inspect for refrigerant leaks using a halogen leak detector.

OK:

No refrigerant leak

CHECK AND REPLACE REFRIGERANT LEAK (HV SUPPLY BATTERY ASSEMBLY)

GO TO PROBLEM SYMPTOMS TABLE (AIR CONDITIONING SYSTEM)

Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground (P0C4211,P0C4215,P0CD511,P0CD515)

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P0C4211	Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground	The battery pack coolant temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	Battery ECU assembly Wire harness or connector No. 1 traction battery cooler tube (duct inlet 1)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C44
P0C4215	Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit High Circuit Short to Auxiliary Battery or Open	The battery pack coolant temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (2 trip detection logic)	Battery ECU assembly Wire harness or connector No. 1 traction battery cooler tube (duct inlet 1)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0C45
P0CD511	Hybrid/EV Battery Pack Coolant Temperature Sensor "B" Circuit Low Circuit Short to Ground	The battery pack coolant temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	Battery ECU assembly Wire harness or connector No. 1 traction battery cooler conductor (duct outlet 1)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CD7
P0CD515	Hybrid/EV Battery Pack Coolant Temperature Sensor "B" Circuit High Circuit Short to Auxiliary Battery or Open	The battery pack coolant temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to B or open) and the detected temperature is lower than the specified value. (2 trip detection logic)	Battery ECU assembly Wire harness or connector No. 1 traction battery cooler conductor (duct outlet 1)	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P0CD8

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a air conditioning thermistor assembly, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0C44 (INF P0C4211): Hybrid Battery Pack Coolant Temperature Sensor 1 (Battery Refrigerant Inlet 1) Range check (Low voltage) P0C45 (INF P0C4215): Hybrid Battery Pack Coolant Temperature Sensor 1 (Battery Refrigerant Inlet 1) Range check (High voltage) P0CD7 (INF P0CD511): Hybrid Battery Pack Coolant Temperature Sensor 2 (Battery Refrigerant Inlet 1) Range check (Low voltage) P0CD8 (INF P0CD515): Hybrid Battery Pack Coolant Temperature Sensor 2 (Battery Refrigerant Inlet 1) Range check (High voltage)
Required sensors/components	Air Conditioning Thermistor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0C44 (INF P0C4211) is not detected

DTC P0C45 (INF P0C4215) is not detected

DTC P0CD7 (INF P0CD511) is not detected

DTC P0CD8 (INF P0CD515) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0C4211, P0C4215, P0CD511 or P0CD515" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery ECU assembly connector.

HINT:

Click here

OK:

The connectors are connected securely and there are no contact pressure problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P0C4211 or P0C4215" is also output.	A
"P0CD511 or P0CD515" is also output.	B

GO TO STEP 6

4.	CHECK NO. 1 TRACTION BATTERY COOLER TUBE (DUCT INLET 1)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance of the circuit for the malfunctioning sensor.

Tester Connection:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Air Conditioning Thermistor
X2-1 (TRF0) - x2-2 (GRF0)	Duct Inlet 1

Standard Resistance:

Thermistor Temperature	Condition	Specified Condition
0 to 10°C (32 to 50°F)	Ignition switch off	3.876 to 6.059 kΩ
10 to 20°C (50 to 68°F)	Ignition switch off	2.574 to 3.957 kΩ
20 to 30°C (68 to 86°F)	Ignition switch off	1.752 to 2.660 kΩ
30 to 40°C (86 to 104°F)	Ignition switch off	1.222 to 1.831 kΩ
40 to 50°C (104 to 122°F)	Ignition switch off	0.869 to 1.285 kΩ

Procedure2

(e) Measure the resistance according to the value (s) in the table below.

Standard Resistance:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x2-1 (TRF0) - Body ground and other terminals (except x2-2 (GRF0))	Ignition switch off	10 kΩ or higher
x2-2 (GRF0) - Body ground and other terminals (except x2-1 (TRF0))	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value (s) in the table below.

Standard Voltage:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x2-1 (TRF0) - Body ground	Ignition switch ON	Below 1 V
x2-2 (GRF0) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Reconnect the battery ECU assembly connector.

(k) Disconnect the cable from the negative (-) auxiliary battery terminal.

(l) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY COOLER TUBE (DUCT INLET 1) - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery cooler tube connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x10,x2) Click Connector(x10) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x10-2 (TRR0) - x2-1 (TRF0)	Ignition switch off	Below 1 Ω
x10-1 (GRR0) - x2-2 (GRF0)	Ignition switch off	Below 1 Ω
x10-2 (TRR0) or x2-1 (TRF0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x10-1 (GRR0) or x2-2 (GRF0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value (s) in the table below.

Standard Voltage:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x2-1 (TRF0) - Body ground	Ignition switch ON	Below 1 V
x2-2 (GRF0) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery cooler tube connector.

(l) Reconnect the battery ECU assembly connector.

(m) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY COOLER TUBE

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK NO. 1 TRACTION BATTERY COOLER CONDUCTOR (DUCT OUTLET 1)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance of the circuit for the malfunctioning sensor.

Tester Connection:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Air Conditioning Thermistor
x2-8(TRF1) - x2-7(GRF1)	Duct Inlet 1

Standard Resistance:

Thermistor Temperature	Condition	Specified Condition
0 to 10°C (32 to 50°F)	Ignition switch off	3.876 to 6.059 kΩ
10 to 20°C (50 to 68°F)	Ignition switch off	2.574 to 3.957 kΩ
20 to 30°C (68 to 86°F)	Ignition switch off	1.752 to 2.660 kΩ
30 to 40°C (86 to 104°F)	Ignition switch off	1.222 to 1.831 kΩ
40 to 50°C (104 to 122°F)	Ignition switch off	0.869 to 1.285 kΩ

Procedure2

(e) Measure the resistance according to the value (s) in the table below.

Standard Resistance:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x2-8 (TRF1) - Body ground and other terminals (except x2-7 (GRF1))	Ignition switch off	10 kΩ or higher
x2-7 (GRF1) - Body ground and other terminals (except x2-8 (TRF1))	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x2-8 (TRF1) - Body ground	Ignition switch ON	Below 1 V
x2-7 (GRF1) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery ECU assembly connector.

(l) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

7.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY COOLER CONDUCTOR (DUCT OUTLET 1) - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x9,x2) Click Connector(x9) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x9-2 (TRR1) - x2-8 (TRF1)	Ignition switch off	Below 1 Ω
x9-1 (GRR1) - x2-7 (GRF1)	Ignition switch off	Below 1 Ω
x9-2 (TRR1) or x2-8 (TRF1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x9-1 (GRR1) or x2-7 (GRF1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(e) Connect the cable to the negative (-) auxiliary battery terminal.

(f) Turn the ignition switch to ON.

Procedure2

(g) Measure the voltage according to the value (s) in the table below.

Standard Voltage:

Click Location & Routing(x2) Click Connector(x2)

Tester Connection	Condition	Specified Condition
x2-8 (TRF1) - Body ground	Ignition switch ON	Below 1 V
x2-7 (GRF1) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(h) Turn the ignition switch off.

(i) Disconnect the cable from the negative (-) auxiliary battery terminal.

(j) Reconnect the No. 1 traction battery cooler tube connector.

(k) Reconnect the battery ECU assembly connector.

(l) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY COOLER CONDUCTOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground (P0D0A11)

DESCRIPTION

The CHRs (Charge Relays) are the relays that connect or disconnect the high-voltage system in accordance with commands from the Battery ECU assembly.

There are 3 CHRs and 1 system main resistor. CHRB, CHRP, CHRG and the system main resistor are located in the No. 1 traction battery device box assembly.

To connect to the high voltage power system, the Toyota Prius vehicle will first turn on CHRP and CHRB to charge the vehicle through the system main resistor. Then, CHRP will be turned off after CHRG is turned on. To shut off the high voltage power system, CHRB and CHRG are turned off.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0D0A11

Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground

Short to ground in the CHRB circuit:

Primary circuit of CHR ( ) is malfunctioning.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D0C

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction of its HV battery charging system positive contactor control circuit (CHRB), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0D0C (INF P0D0A11): Battery Charging System Positive Contactor Control Circuit
Required sensors/components	Charge relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0D0C (INF P0D0A11) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Enter the following menus: Powertrain / HV Battery / Data List.[*1]
Check that "Hybrid/EV Battery SOC" shows 70% or less.[*2]
Turn the ignition switch off and wait for 2 minutes or more.[*3]
Connect the electric Toyota Prius vehicle charger cable assembly, plug-in charge the vehicle for at least 5 seconds.[*4]
HINT:

[*1] to [*4]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery ECU assembly connector.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x4-8 (CHRB) - Body ground	Ignition switch off	20.6 to 40.8 Ω	Ω

Post-procedure1

(d) Reconnect the battery ECU assembly connector.

REPLACE BATTERY ECU ASSEMBLY

3.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the No. 1 traction battery device box assembly.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

4.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x12,x4) Click Connector(x12) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) and x4-8 (CHRB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open (P0D0A15)

DESCRIPTION

Refer to the description for DTC P0D0A11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0D0A15

Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open

Open or short to B in the CHRB circuit:

Primary circuit of CHR ( ) is malfunctioning.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D0D

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction of its HV battery charging system positive contactor control circuit (CHRB), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0D0D (INF P0D0A15): Battery Charging System Positive Contactor Control Circuit
Required sensors/components	Charge relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0D0D (INF P0D0A15) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0D0A11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0D0A15" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid control system in the table below are output.	B

System	Relevant DTC
Hybrid control system	P1BAC1C	Hybrid/EV Battery Charging System Positive/Negative Contactor Enable Circuit Circuit Voltage Out of Range

Post-procedure1

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	READ VALUE USING GTS (AC CHARGING POSITIVE RELAY STATUS)

Pre-procedure1

(a) None

Procedure1

(b) Read the Data List.

Powertrain > HV Battery > Data List

Tester Display
AC Charging Positive Relay Status

Standard:

Tester Display	Condition	Specified Condition
AC Charging Positive Relay Status	Ignition switch ON	OFF

Result	Proceed to
The value of AC Charging Positive Relay Status is OFF	A
The value of AC Charging Positive Relay Status is ON	B

Post-procedure1

GO TO STEP 5

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

4.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CHECK FOR INTERMITTENT PROBLEMS

CONNECT SECURELY

5.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

6.	CHECK HARNESS AND CONNECTOR (CHRB VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x4-8 (CHRB) - Body ground	Ignition switch ON	Below 1 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the battery ECU assembly connector.

(j) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

7.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

Click here

GO TO STEP 10

8.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

9.	CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x12,x4) Click Connector(x12) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) - x4-8 (CHRB)	Ignition switch off	Below 1 Ω	Ω

Standard Resistance (Check for Short):

Click Location & Routing(x12,x4) Click Connector(x12) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) and x4-8 (CHRB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x12,x4) Click Connector(x12) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) or x4-8 (CHRB) - Body ground	Ignition switch ON	Below 1 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery device box assembly connector.

(l) Reconnect the battery ECU assembly connector.

(m) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

11.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x12,x4) Click Connector(x12) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) - x4-8 (CHRB)	Ignition switch off	Below 1 Ω	Ω

Standard Resistance (Check for Short):

Click Location & Routing(x12,x4) Click Connector(x12) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) and x4-8 (CHRB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	CHECK HARNESS AND CONNECTOR (NO. 2 TRACTION BATTERY DEVICE BOX ASSEMBLY - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x12) Click Connector(x12)

Tester Connection	Condition	Specified Condition	Result
x12-2 (GND) - Body ground	Ignition switch off	Below 1 Ω	Ω

Post-procedure1

(d) Reconnect the No. 1 traction battery device box assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.	INSPECT NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (CHRB)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Component without harness connected

(No. 1 Traction Battery Device Box Assembly)

Standard Resistance:

Click Location & Routing(x12) Click Connector(x12)

Tester Connection	Condition	Specified Condition	Result
x12-3 (CHRB) - x12-2 (GND)	-40 to 80°C (-40 to 176°F)	20.6 to 40.8 Ω	Ω

Post-procedure1

(d) Reconnect the No. 1 traction battery device box assembly connector.

CHECK FOR INTERMITTENT PROBLEMS

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground (P0D1111)

DESCRIPTION

Refer to the description for DTC P0D0A11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0D1111

Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground

Short to ground in the CHRG circuit:

Primary circuit of CHR (-) is malfunctioning.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D13

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction of its HV battery charging system negative contactor control circuit (CHRG), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0D13 (INF P0D1111): Battery Charging System Negative Contactor Control Circuit
Required sensors/components	Charge relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0D13 (INF P0D1111) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Enter the following menus: Powertrain / HV Battery / Data List.[*1]
Check that "Hybrid/EV Battery SOC" shows 70% or less.[*2]
Turn the ignition switch off and wait for 2 minutes or more.[*3]
Connect the electric Toyota Prius vehicle charger cable assembly, plug-in charge the vehicle for at least 5 seconds.[*4]
HINT:

[*1] to [*4]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0D0A11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x4-6 (CHRG) - Body ground	Ignition switch off	20.6 to 40.8 Ω	Ω

Post-procedure1

(d) Reconnect the battery ECU assembly connector.

REPLACE BATTERY ECU ASSEMBLY

3.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the No. 1 traction battery device box assembly.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

4.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) and x4-6 (CHRG) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open (P0D1115)

DESCRIPTION

Refer to the description for DTC P0D0A11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0D1115

Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open

Open or short to B in CHRG circuit:

Primary circuit of CHR (-) is malfunctioning.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D14

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction of its HV battery charging system negative contactor control circuit (CHRG), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0D14 (INF P0D1115): Battery Charging System Negative Contactor Control Circuit
Required sensors/components	Charge relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0D14 (INF P0D1115) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0D0A11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	READ VALUE USING GTS (AC CHARGING NEGATIVE RELAY STATUS)

Pre-procedure1

(a) None

Procedure1

(b) Read the Data List.

Powertrain > HV Battery > Data List

Tester Display
AC Charging Negative Relay Status

Standard:

Tester Display	Condition	Specified Condition
AC Charging Negative Relay Status	Ignition switch ON	OFF

Result	Proceed to
The value of AC Charging Negative Relay Status is OFF	A
The value of AC Charging Negative Relay Status is ON	B

Post-procedure1

GO TO STEP 4

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

3.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CHECK FOR INTERMITTENT PROBLEMS

CONNECT SECURELY

4.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

5.	CHECK HARNESS AND CONNECTOR (CHRG VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x4-6 (CHRG) - Body ground	Ignition switch ON	Below 1 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the battery ECU assembly connector.

(j) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

6.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

Click here

GO TO STEP 9

7.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

8.	CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) - x4-6 (CHRG)	Ignition switch off	Below 1 Ω	Ω

Standard Resistance (Check for Short):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) and x4-6 (CHRG) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) and x4-6 (CHRG) - Body ground	Ignition switch ON	Below 1 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery device box assembly connector.

(l) Reconnect the battery ECU assembly connector.

(m) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

10.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) - x4-6 (CHRG)	Ignition switch off	Below 1 Ω	Ω

Standard Resistance (Check for Short):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) and x4-6 (CHRG) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x13) Click Connector(x13)

Tester Connection	Condition	Specified Condition	Result
x13-3 (GND8) - Body ground	Ignition switch off	Below 1 Ω	Ω

Post-procedure1

(d) Reconnect the No. 1 traction battery device box assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	INSPECT NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (CHRG)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Component without harness connected

(No. 1 Traction Battery Device Box Assembly)

Standard Resistance:

Click Location & Routing(x13) Click Connector(x13)

Tester Connection	Condition	Specified Condition	Result
x13-1 (CHRG) - x13-3 (GND8)	-40 to 80°C (-40 to 176°F)	20.6 to 40.8 Ω	Ω

Post-procedure1

(d) Reconnect the No. 2 traction battery device box assembly connector.

CHECK FOR INTERMITTENT PROBLEMS

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold (P0D1A18,P0D1A19,P1F6900)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0D1A18

Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold

When the motor is being operated, there is an open or short in the magnet valve (No. 1 traction battery cooler tube) circuit or the magnet valve (No. 1 traction battery cooler tube) is overheating

(1 trip detection logic)

Wire harness or connector
Battery ECU assembly
Magnet valve (No. 1 traction battery cooler tube)

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D1D

P0D1A19

Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit High Circuit Current Above Threshold

When the motor is being operated, there is an open or short in the magnet valve (No. 1 traction battery cooler tube) circuit or the magnet valve (No. 1 traction battery cooler tube) is overheating

(1 trip detection logic)

Wire harness or connector
Battery ECU assembly
Magnet valve (No. 1 traction battery cooler tube)

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D1E

P1F6900

Hybrid/EV Battery Pack Coolant Control Valve "B" Monitor Performance

When the motor is being operated, there is an open or short in the magnet valve (No. 1 traction battery cooler tube) circuit or the magnet valve (No. 1 traction battery cooler tube) is overheating

(1 trip detection logic)

Wire harness or connector
Battery ECU assembly
Magnet valve (No. 1 traction battery cooler tube)

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1F69

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a magnet valve, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0D1D (INF P0D1A18): Hybrid Battery Pack Coolant Control Valve 2 (Battery Refrigerant Electric Expansion Valve) Range check (Low current) P0D1E (INF P0D1A19): Hybrid Battery Pack Coolant Control Valve 2 (Battery Refrigerant Electric Expansion Valve) Range check (High current) P1F69 (INF P1F6900): Hybrid Battery Pack Coolant Control Valve 2 (Battery Refrigerant Electric Expansion Valve) Performance
Required sensors/components	Magnet valve
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0D1D (INF P0D1A18) is not detected

DTC P0D1E (INF P0D1A19) is not detected

DTC P1F69 (INF P1F6900) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (MAGNET VALVE (NO. 1 TRACTION BATTERY COOLER TUBE) - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the Battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x8,x4) Click Connector(x8) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x8-4 (HPR ) - x4-20 (SMA0)	Ignition switch off	Below 1 Ω	Ω
x8-1 (HPR-) - x4-21 (SMB0)	Ignition switch off	Below 1 Ω	Ω
x8-5 (HPL ) - x4-22 (SMC0)	Ignition switch off	Below 1 Ω	Ω
x8-2 (HPL-) - x4-23 (SMD0)	Ignition switch off	Below 1 Ω	Ω
x8-4 (HPR ) or x4-20 (SMA0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ
x8-1 (HPR-) or x4-21 (SMB0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ
x8-5 (HPL ) or x4-22 (SMC0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ
x8-2 (HPL-) or x4-23 (SMD0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the magnet valve (No. 1 traction battery cooler tube) connector.

(f) Reconnect the battery ECU assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	INSPECT MAGNET VALVE (NO. 1 TRACTION BATTERY COOLER TUBE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the magnet valve (No. 1 traction battery cooler tube) connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x8) Click Connector(x8)

Tester Connection	Condition	Specified Condition	Result
x8-4 (HPR ) - x8-1 (HPR-)	Ignition switch off	5 to 25 Ω	Ω
x8-5 (HPL ) - x8-2 (HPL-)	Ignition switch off	5 to 25 Ω	Ω
x8-4 (HPR ) - x8-5 (HPL )	Ignition switch off	10 kΩ or higher	kΩ

Result:

Proceed to
OK
NG

*a	Component without harness connected Magnet Valve (No. 1 traction battery cooler tube))

Post-procedure1

(d) Reconnect the magnet valve (No. 1 traction battery cooler tube) connector.

REPLACE NO. 1 TRACTION BATTERY COOLER TUBE

3.	CHECK BATTERY ECU ASSEMBLY (OUTPUT WAVEFORM)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

Procedure1

(d) Check the output waveform.

(1) Connect an oscilloscope to terminal.

*a	Component with harness connected (Battery ECU Assembly)

(2) Enter the following menus.

Powertrain > HV Battery > Active Test

Tester Display
Hybrid/EV Battery Refrigerant Cooling Valve

(3) Check the signal waveform according to the condition(s) in the table below.

Item	Condition
Measurement terminal	x4-20 (SMA0) - x4-21 (SMB0)
Measurement terminal	x4-22 (SMC0) - x4-23 (SMD0)
Tool setting	10 V/DIV., 5 ms./DIV.
Toyota Prius Vehicle condition	Ignition switch ON, during Active Test

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

*a	Waveform 1

Result	Proceed to
Normal (The pulse output of waveform 1)	A
No pulse generation	B

Post-procedure1

(e) Turn the ignition switch off.

(f) Disconnect the cable from the negative (-) auxiliary battery terminal.

(g) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY COOLER TUBE

REPLACE BATTERY ECU ASSEMBLY

Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck (P0D1A71)

DTC SUMMARY

MALFUNCTION DESCRIPTION

The system determines that there is a deviation in characteristics for the magnet valve (No. 1 traction battery cooler tube) in the HV battery refrigerant cooling system and prevents the HV battery temperature from rising excessively.

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0D1A71

Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck

Detected when either of the following conditions is satisfied within the specified time from when HV battery cooling started

(2 trip detection logic)

Open malfunction detected

When the command value sent to the magnet valve (No. 1 traction battery cooler tube) is the minimum opening angle command, the difference in the temperature of the refrigerant inlet and outlet is less than the specified value.

Close malfunction detected

The change in temperature for the refrigerant inlet is lower than the specified value when the command value sent to the magnet valve (No. 1 traction battery cooler tube) is an open command

Magnet valve (No. 1 traction battery cooler tube)
No. 1 traction battery cooler tube (duct inlet 1)
No. 1 traction battery cooler conductor (duct outlet 1)
Battery ECU assembly
Wire harness or connector
A/C cooler pipe
HV battery cooler pipe
Cooling fan system

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0D1B

MONITOR DESCRIPTION

Within the specified time from when HV battery cooling starts, if it is detected that the command value sent to the magnet valve is a close command and the change in the refrigerant inlet and outlet temperature is higher than the specified value, or the command value sent to the magnet valve is an open command and the change in the refrigerant inlet temperature is lower than the specified value, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0D1B (INF P0D1A71): Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off
Required sensors/components	Magnet valve, Air Conditioning Thermistor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	2 driving cycles
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0D1B (INF P0D1A71) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Enter the following menus: Powertrain / HV Battery / Active Test / Hybrid/EV Battery Refrigerant Cooling Control / Data List / Hybrid/EV Battery Temperature 1 to 15, Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1), Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1).[*1]
Check that the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" is a minimum of 11°C (52°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" is 0°C (32°F) or more.[*2] Conditions for performing "Hybrid/EV Battery Refrigerant Cooling Control" Active Test
HINT:

The HV battery minimum temperature must be 11°C (52°F) and the refrigerant temperature inside the HV battery must be 0°C (32°F) or higher.

If the above conditions are not established, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the HV battery temperature.

In consideration of the temperature drop after the heater stops, increase the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" to a minimum of 12°C (54°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" to 1°C (34°F) or more.

(At an ambient temperature of 5°C (41°F), "Hybrid/EV Battery Heater Relay" will need to be performed for approximately 5 hours.)

Set the Toyota Prius vehicle to the following conditions.[*3]

Item	Condition
A/C Switch	ON
Blower Speed	HI
Set Temperature	MAX COLD when the ambient temperature is 25°C (77°F) or higher MAX HOT when the ambient temperature is less than 25°C (77°F)

HINT:

If the ambient temperature is from 25°C (77°F) to 30°C (86°F), perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test within 1 minute from setting the above conditions.

Check that the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" is a minimum of 11°C (52°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" is 0°C (32°F) or more.[*4]
HINT:

Setting "A/C Switch" to "ON" and "Blower Speed" to "HI" in the Toyota Prius vehicle may cause the refrigerant temperature inside the HV battery to drop.

If the temperature has dropped lower than the conditions for performing the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the temperature.
Perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test for 14 minutes.[*5]
Turn the ignition switch off and wait for 1 minute or more.[*6]
Enter the following menus: Powertrain / HV Battery / Active Test / Hybrid/EV Battery Refrigerant Cooling Control / Data List / Hybrid/EV Battery Temperature 1 to 15, Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1), Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1).[*7]
Check that the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" is a minimum of 11°C (52°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" is 0°C (32°F) or more.[*8] Conditions for performing "Hybrid/EV Battery Refrigerant Cooling Control" Active Test
HINT:

The HV battery minimum temperature must be 11°C (52°F) and the refrigerant temperature inside the HV battery must be 0°C (32°F) or higher.

If the above conditions are not established, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the HV battery temperature.

In consideration of the temperature drop after the heater stops, increase the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" to a minimum of 12°C (54°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" to 1°C (34°F) or more.

(At an ambient temperature of 5°C (41°F), "Hybrid/EV Battery Heater Relay" will need to be performed for approximately 5 hours.)

Set the Toyota Prius vehicle to the following conditions.[*9]

Item	Condition
A/C Switch	ON
Blower Speed	HI
Set Temperature	MAX COLD when the ambient temperature is 25°C (77°F) or higher MAX HOT when the ambient temperature is less than 25°C (77°F)

HINT:

If the ambient temperature is from 25°C (77°F) to 30°C (86°F), perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test within 1 minute from setting the above conditions.

Check that the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" is a minimum of 11°C (52°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" is 0°C (32°F) or more.[*10]
HINT:

Setting "A/C Switch" to "ON" and "Blower Speed" to "HI" in the Toyota Prius vehicle may cause the refrigerant temperature inside the HV battery to drop.

If the temperature has dropped lower than the conditions for performing the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the temperature.
Perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test for 14 minutes.[*11]
HINT:

[*1] to [*11]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0D1A18.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL, AIR CONDITIONER)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes Body Electrical > Air Conditioner > Trouble Codes

Result	Proceed to
"P0D1A71" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C
DTCs of air conditioning system in the table below are output.	D

Malfunction Content	System	Relevant DTC
Air conditioner malfunction	Air conditioning system	B138571	A/C Cooling Electric Expansion Valve Actuator Stuck
		B3A0A71	A/C Heating Electric Expansion Valve Actuator Stuck
		P0EC971	A/C Low Pressure Magnetic Valve Actuator Stuck
		P05301C	Refrigerant Pressure Sensor Circuit Voltage Out of Range
		P15017A	Hybrid/EV Battery Cooling Refrigerant Gas Fluid Leak or Seal Failure
		P2D4496	A/C Compressor Component Internal Failure
Microcomputer malfunction	Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
		P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
		P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

GO TO DTC CHART (AIR CONDITIONING SYSTEM)

2.	CHECK Toyota Prius Vehicle CONDITION

Pre-procedure1

(a) Make sure that the front side of the radiator grille is not blocked with anything.

Procedure1

(b) Ask the customer if the front side of the radiator grille was blocked with anything.

Result	Proceed to
Not blocked.	A
Is/was blocked.	B

HINT:

If the radiator grille is blocked, the inverter coolant temperature will increase and this DTC may be stored.

Post-procedure1

IF EQUIPPED, EXPLAIN TO CUSTOMER THAT OPTIONAL COMPONENTS WILL BE REMOVED

3.	INSPECT COOLING FAN

Pre-procedure1

(a) None

Procedure1

(b) Perform the "Control the Engine Cooling Fan Duty Ratio" Active Test.

Powertrain > Engine > Active Test

Tester Display
Control the Engine Cooling Fan Duty Ratio

OK:

GTS Operation	Fan Operation
30 - 100%	Cooling fan operates
0%	Cooling fan stops

Result	Proceed to
Cooling fan operate	A
Cooling fan does not operate	B
Cooling fan do not stop	B

Post-procedure1

GO TO COOLING FAN CIRCUIT

4.	REFRIGERANT SHORTAGE CHECK USING GTS

HINT:

Click here

GO TO STEP 8

5.	CHECK HARNESS AND CONNECTOR (MAGNET VALVE (NO. 1 TRACTION BATTERY COOLER TUBE) - BATTERY ECU ASSEMBLY)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	INSPECT MAGNET VALVE (NO. 1 TRACTION BATTERY COOLER TUBE)

Click here

REPLACE NO. 1 TRACTION BATTERY COOLER TUBE

7.	CHECK BATTERY ECU ASSEMBLY (OUTPUT WAVEFORM)

Click here

Result	Proceed to
Normal (The pulse output of waveform 1)	A
No pulse generation	B

REPLACE NO. 1 TRACTION BATTERY COOLER TUBE

REPLACE BATTERY ECU ASSEMBLY

8.	INSPECT FOR REFRIGERANT LEAK (AIR CONDITIONING SYSTEM)

Click here

GO TO PROBLEM SYMPTOMS TABLE (AIR CONDITIONING SYSTEM)

9.	INSPECT FOR REFRIGERANT LEAK (INLET SIDE OF HV SUPPLY BATTERY ASSEMBLY)

Click here

CHECK AND REPLACE REFRIGERANT LEAK (HV SUPPLY BATTERY ASSEMBLY)

GO TO PROBLEM SYMPTOMS TABLE (AIR CONDITIONING SYSTEM)

Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance (P0E2D00)

DESCRIPTION

The battery ECU assembly detects the voltage of each HV battery cell. The battery ECU assembly monitors its internal HV battery cell voltage detection circuits to detect malfunctions. If the battery ECU assembly detects a malfunction it will store this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0E2D00

Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance

The battery ECU assembly detects a malfunction of its internal HV battery cell voltage detection circuits.

(1 trip detection logic)

Battery voltage sensor
No. 1 HV supply stack sub-assembly
No. 2 HV supply stack sub-assembly
No. 3 HV supply stack sub-assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0E2D

MONITOR DESCRIPTION

The battery ECU assembly monitors its internal HV battery cell voltage detection circuits to detect malfunctions. If the battery ECU assembly detects a malfunction, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0E2D (INF P0E2D00): Internal control module Hybrid/EV battery monitor performance
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0E2D (INF P0E2D00) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P0E2D00" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P1A001C	Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range
	P1A051C	Hybrid Battery Stack 3 Cell Voltage Detection Voltage Out of Range
	P1A0A1C	Hybrid Battery Stack 4 Cell Voltage Detection Voltage Out of Range
	P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open
	P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open
	P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open
	P1AC713	Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open
	P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On
	P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On
	P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On
	P1AC79E	Hybrid/EV Battery Stack 4 Current Interrupt Device Stuck On
	P301A1C	Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range
Hybrid control system	P0AA649	Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Lost Communication with Hybrid/EV Battery Monitoring IC", "Hybrid/EV Battery Monitoring IC 1 Internal Malfunction (Determinable)" through "Hybrid/EV Battery Monitoring IC 3 Internal Malfunction (Determinable)", "Hybrid/EV Battery Monitoring IC Internal Malfunction (Unidentifiable)", "Hybrid/EV Battery Monitoring IC 1 Power Supply Malfunction" through "Hybrid/EV Battery Monitoring IC 3 Power Supply Malfunction" and "Hybrid/EV Battery Monitoring IC 1 Cell Voltage Detection Malfunction" through "Hybrid/EV Battery Monitoring IC 3 Cell Voltage Detection Malfunction" for DTC P0E2D00 and make a note.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
The freeze frame data item "Hybrid/EV Battery Monitoring IC Internal Malfunction (Unidentifiable)" is ON.	A
Either freeze frame data item "Hybrid/EV Battery Monitoring IC 1 Internal Malfunction (Determinable)" through "Hybrid/EV Battery Monitoring IC 3 Internal Malfunction (Determinable)" is ON.	B
Any of the freeze frame data items "Hybrid/EV Battery Monitoring IC 1 Power Supply Malfunction" through "Hybrid/EV Battery Monitoring IC 3 Power Supply Malfunction" is ON.	C
The freeze frame data item "Lost Communication with Hybrid/EV Battery Monitoring IC" is ON.	D
Any of the freeze frame data items "Hybrid/EV Battery Monitoring IC 1 Cell Voltage Detection Malfunction" through "Hybrid/EV Battery Monitoring IC 3 Power Supply Malfunction" is ON.	E

HINT:

The chart above is listed in inspection order of priority.
Check items that are ON at the same time by following the listed order.

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

GO TO STEP 4

GO TO STEP 5

3.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BATTERY VOLTAGE SENSOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

CAUTION:

When disconnecting connector x6 of the battery voltage sensor, first disconnect connectors z17, z18, z19, z20, z21 and z22 from the battery voltage sensor.

NOTICE:

Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x1,x6) Click Connector(x1) Click Connector(x6)

Tester Connection	Condition	Specified Condition
x1-1 (VG0) - x6-18 (VG0)	Ignition switch off	Below 1 Ω
x1-2 (VG1) - x6-40 (VG1)	Ignition switch off	Below 1 Ω
x1-23 (GDV0) - x6-16 (GDV0)	Ignition switch off	Below 1 Ω
x1-24 (GDV1) - x6-38 (GDV1)	Ignition switch off	Below 1 Ω

Post-procedure1

(e) Reconnect the x6 battery voltage sensor connector.

CAUTION:

When connecting connectors z17, z18, z19, z20, z21 and z22 of the battery voltage sensor, first connect connector x6 to the battery voltage sensor.

(f) Reconnect the battery ECU assembly connector.

REPLACE BATTERY VOLTAGE SENSOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BATTERY VOLTAGE SENSOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

CAUTION:

When disconnecting connector x6 of the battery voltage sensor, first disconnect connectors z17, z18, z19, z20, z21 and z22 from the battery voltage sensor.

NOTICE:

Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x1,x6) Click Connector(x1) Click Connector(x6)

Tester Connection	Condition	Specified Condition
x1-27 (SCOH) - x6-10 (SCIH)	Ignition switch off	Below 1 Ω
x1-28 (SCOL) - x6-33 (SCIL)	Ignition switch off	Below 1 Ω
x1-29 (SCIH) - x6-11 (SCOH)	Ignition switch off	Below 1 Ω
x1-30 (SCIL) - x6-34 (SCOL)	Ignition switch off	Below 1 Ω

Post-procedure1

(e) Reconnect the x6 battery voltage sensor connector.

CAUTION:

When connecting connectors z17, z18, z19, z20, z21 and z22 of the battery voltage sensor, first connect connector x6 to the battery voltage sensor.

(f) Reconnect the battery ECU assembly connector.

REPLACE BATTERY ECU ASSEMBLY AND BATTERY VOLTAGE SENSOR

Battery ECU assembly: Click here

Battery voltage sensor: Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connector.

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Connector z18 is not connected securely	The terminals are damaged or corroded	C
Connector z17 is not connected securely	The terminals are damaged or corroded	D
Connector z20 is not connected securely	The terminals are damaged or corroded	E
Connector z19 is not connected securely	The terminals are damaged or corroded	F
Connector z22 is not connected securely	The terminals are damaged or corroded	G
Connector z21 is not connected securely	The terminals are damaged or corroded	H

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

6.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 72 Voltage" for DTC P0E2D00 and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
The value of any of the freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 24 Voltage" is 1.6 V or less.	A
The value of any of the freeze frame data items "Hybrid/EV Battery Cell 25 Voltage" through "Hybrid/EV Battery Cell 48 Voltage" is 1.6 V or less.	B
The value of any of the freeze frame data items "Hybrid/EV Battery Cell 49 Voltage" through "Hybrid/EV Battery Cell 72 Voltage" is 1.6 V or less.	C
Other than above	D

Post-procedure1

GO TO STEP 10

GO TO STEP 13

REPLACE BATTERY VOLTAGE SENSOR

7.	CHECK NO. 1 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 1 TO 24 VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.
Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery voltage sensor connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

HINT:

Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.6 V or less only.

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition
1	z18-6 (GA0) (-) - z18-5 (VA1) ( )	Always
2	z18-5 (VA1) (-) - z18-4 (VA2) ( )	Always
3	z18-4 (VA2) (-) - z18-1 (VA3) ( )	Always
4	z18-1 (VA3) (-) - z18-3 (VA4) ( )	Always
5	z18-3 (VA4) (-) - z17-27 (VA5) ( )	Always
6	z17-27 (VA5) (-) - z17-17 (VA6) ( )	Always
7	z17-17 (VA6) (-) - z17-16 (VA7) ( )	Always
8	z17-16 (VA7) (-) - z17-4 (VA8) ( )	Always
9	z17-4 (VA8) (-) - z17-3 (VA9) ( )	Always
10	z17-3 (VA9) (-) - z17-15 (VA10) ( )	Always
11	z17-15 (VA10) (-) - z17-14 (VA11) ( )	Always
12	z17-14 (VA11) (-) - z17-13 (VA12) ( )	Always
13	z17-12 (GA1) (-) - z17-23 (VA13) ( )	Always
14	z17-23 (VA13) (-) - z17-11 (VA14) ( )	Always
15	z17-11 (VA14) (-) - z17-10 (VA15) ( )	Always
16	z17-10 (VA15) (-) - z17-9 (VA16) ( )	Always
17	z17-9 (VA16) (-) - z17-8 (VA17) ( )	Always
18	z17-8 (VA17) (-) - z17-20 (VA18) ( )	Always
19	z17-20 (VA18) (-) - z17-7 (VA19) ( )	Always
20	z17-7 (VA19) (-) - z17-2 (VA20) ( )	Always
21	z17-2 (VA20) (-) - z17-1 (VA21) ( )	Always
22	z17-1 (VA21) (-) - z17-6 (VA22) ( )	Always
23	z17-6 (VA22) (-) - z17-5 (VA23) ( )	Always
24	z17-5 (VA23) (-) - z17-18 (VA24) ( )	Always

CAUTION:

Make sure not to cross the electrodes of an electrical tester measurement terminals.

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

Post-procedure1

(d) Reconnect the battery voltage sensor connector.

REPLACE BATTERY VOLTAGE SENSOR

8.	CHECK BATTERY VOLTAGE SENSOR (VA1 - VA24)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery voltage sensor which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

Component without harness connected

(Battery Voltage Sensor)

Standard Resistance:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
1	z18-6 (GA0) (-) - z18-5 (VA1) ( )	Always	50 kΩ or more
2	z18-5 (VA1) (-) - z18-4 (VA2) ( )	Always	50 kΩ or more
3	z18-4 (VA2) (-) - z18-1 (VA3) ( )	Always	50 kΩ or more
4	z18-1 (VA3) (-) - z18-3 (VA4) ( )	Always	50 kΩ or more
5	z18-3 (VA4) (-) - z17-27 (VA5) ( )	Always	50 kΩ or more
6	z17-27 (VA5) (-) - z17-17 (VA6) ( )	Always	50 kΩ or more
7	z17-17 (VA6) (-) - z17-16 (VA7) ( )	Always	50 kΩ or more
8	z17-16 (VA7) (-) - z17-4 (VA8) ( )	Always	50 kΩ or more
9	z17-4 (VA8) (-) - z17-3 (VA9) ( )	Always	50 kΩ or more
10	z17-3 (VA9) (-) - z17-15 (VA10) ( )	Always	50 kΩ or more
11	z17-15 (VA10) (-) - z17-14 (VA11) ( )	Always	50 kΩ or more
12	z17-14 (VA11) (-) - z17-13 (VA12) ( )	Always	50 kΩ or more
13	z17-12 (GA1) (-) - z17-23 (VA13) ( )	Always	50 kΩ or more
14	z17-23 (VA13) (-) - z17-11 (VA14) ( )	Always	50 kΩ or more
15	z17-11 (VA14) (-) - z17-10 (VA15) ( )	Always	50 kΩ or more
16	z17-10 (VA15) (-) - z17-9 (VA16) ( )	Always	50 kΩ or more
17	z17-9 (VA16) (-) - z17-8 (VA17) ( )	Always	50 kΩ or more
18	z17-8 (VA17) (-) - z17-20 (VA18) ( )	Always	50 kΩ or more
19	z17-20 (VA18) (-) - z17-7 (VA19) ( )	Always	50 kΩ or more
20	z17-7 (VA19) (-) - z17-2 (VA20) ( )	Always	50 kΩ or more
21	z17-2 (VA20) (-) - z17-1 (VA21) ( )	Always	50 kΩ or more
22	z17-1 (VA21) (-) - z17-6 (VA22) ( )	Always	50 kΩ or more
23	z17-6 (VA22) (-) - z17-5 (VA23) ( )	Always	50 kΩ or more
24	z17-5 (VA23) (-) - z17-18 (VA24) ( )	Always	50 kΩ or more

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Read the resistance after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery voltage sensor.

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

Post-procedure1

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

9.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

10.	CHECK NO. 2 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 25 TO 48 VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.
Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery voltage sensor connectors.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

HINT:

Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.6 V or less only.

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition
25	z20-12 (GA2) (-) - z20-11 (VA25) ( )	Always
26	z20-11 (VA25) (-) - z20-10 (VA26) ( )	Always
27	z20-10 (VA26) (-) - z20-9 (VA27) ( )	Always
28	z20-9 (VA27) (-) - z20-8 (VA28) ( )	Always
29	z20-8 (VA28) (-) - z20-20 (VA29) ( )	Always
30	z20-20 (VA29) (-) - z20-7 (VA30) ( )	Always
31	z20-7 (VA30) (-) - z20-2 (VA31) ( )	Always
32	z20-2 (VA31) (-) - z20-1 (VA32) ( )	Always
33	z20-1 (VA32) (-) - z20-6 (VA33) ( )	Always
34	z20-6 (VA33) (-) - z20-5 (VA34) ( )	Always
35	z20-5 (VA34) (-) - z20-18 (VA35) ( )	Always
36	z20-18 (VA35) (-) - z19-21 (VA36) ( )	Always
37	z19-13 (GA3) (-) - z19-2 (VA37) ( )	Always
38	z19-2 (VA37) (-) - z19-12 (VA38) ( )	Always
39	z19-12 (VA38) (-) - z19-11 (VA39) ( )	Always
40	z19-11 (VA39) (-) - z19-10 (VA40) ( )	Always
41	z19-10 (VA40) (-) - z19-9 (VA41) ( )	Always
42	z19-9 (VA41) (-) - z19-8 (VA42) ( )	Always
43	z19-8 (VA42) (-) - z19-7 (VA43) ( )	Always
44	z19-7 (VA43) (-) - z19-6 (VA44) ( )	Always
45	z19-6 (VA44) (-) - z19-5 (VA45) ( )	Always
46	z19-5 (VA45) (-) - z19-4 (VA46) ( )	Always
47	z19-4 (VA46) (-) - z19-1 (VA47) ( )	Always
48	z19-1 (VA47) (-) - z19-3 (VA48) ( )	Always

CAUTION:

Make sure not to cross the electrodes of an electrical tester measurement terminals.

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

Post-procedure1

(d) Reconnect the battery voltage sensor connectors.

REPLACE BATTERY VOLTAGE SENSOR

11.	CHECK BATTERY VOLTAGE SENSOR (VA25 - VA48)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery voltage sensor which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

Component without harness connected

(Battery Voltage Sensor)

Standard Resistance:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
25	z20-12 (GA2) (-) - z20-11 (VA25) ( )	Always	50 kΩ or more
26	z20-11 (VA25) (-) - z20-10 (VA26) ( )	Always	50 kΩ or more
27	z20-10 (VA26) (-) - z20-9 (VA27) ( )	Always	50 kΩ or more
28	z20-9 (VA27) (-) - z20-8 (VA28) ( )	Always	50 kΩ or more
29	z20-8 (VA28) (-) - z20-20 (VA29) ( )	Always	50 kΩ or more
30	z20-20 (VA29) (-) - z20-7 (VA30) ( )	Always	50 kΩ or more
31	z20-7 (VA30) (-) - z20-2 (VA31) ( )	Always	50 kΩ or more
32	z20-2 (VA31) (-) - z20-1 (VA32) ( )	Always	50 kΩ or more
33	z20-1 (VA32) (-) - z20-6 (VA33) ( )	Always	50 kΩ or more
34	z20-6 (VA33) (-) - z20-5 (VA34) ( )	Always	50 kΩ or more
35	z20-5 (VA34) (-) - z20-18 (VA35) ( )	Always	50 kΩ or more
36	z20-18 (VA35) (-) - z19-21 (VA36) ( )	Always	50 kΩ or more
37	z19-13 (GA3) (-) - z19-2 (VA37) ( )	Always	50 kΩ or more
38	z19-2 (VA37) (-) - z19-12 (VA38) ( )	Always	50 kΩ or more
39	z19-12 (VA38) (-) - z19-11 (VA39) ( )	Always	50 kΩ or more
40	z19-11 (VA39) (-) - z19-10 (VA40) ( )	Always	50 kΩ or more
41	z19-10 (VA40) (-) - z19-9 (VA41) ( )	Always	50 kΩ or more
42	z19-9 (VA41) (-) - z19-8 (VA42) ( )	Always	50 kΩ or more
43	z19-8 (VA42) (-) - z19-7 (VA43) ( )	Always	50 kΩ or more
44	z19-7 (VA43) (-) - z19-6 (VA44) ( )	Always	50 kΩ or more
45	z19-6 (VA44) (-) - z19-5 (VA45) ( )	Always	50 kΩ or more
46	z19-5 (VA45) (-) - z19-4 (VA46) ( )	Always	50 kΩ or more
47	z19-4 (VA46) (-) - z19-1 (VA47) ( )	Always	50 kΩ or more
48	z19-1 (VA47) (-) - z19-3 (VA48) ( )	Always	50 kΩ or more

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Read the resistance after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery voltage sensor.

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

Post-procedure1

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

12.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

13.	CHECK NO. 3 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 49 TO 72 VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.
Disconnect only the connector corresponding to the HV battery cell to be checked. Do not disconnect the other connectors.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery voltage sensor connectors.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

HINT:

Measure the voltage of the HV battery cells whose value in the freeze frame data was 1.6 V or less only.

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition
49	z22-11 (GA4) (-) - z22-10 (VA49) ( )	Always
50	z22-10 (VA49) (-) - z22-9 (VA50) ( )	Always
51	z22-9 (VA50) (-) - z22-3 (VA51) ( )	Always
52	z22-3 (VA51) (-) - z22-8 (VA52) ( )	Always
53	z22-8 (VA52) (-) - z22-2 (VA53) ( )	Always
54	z22-2 (VA53) (-) - z22-7 (VA54) ( )	Always
55	z22-7 (VA54) (-) - z22-1 (VA55) ( )	Always
56	z22-1 (VA55) (-) - z22-6 (VA56) ( )	Always
57	z22-6 (VA56) (-) - z21-17 (VA57) ( )	Always
58	z21-17 (VA57) (-) - z21-16 (VA58) ( )	Always
59	z21-16 (VA58) (-) - z21-4 (VA59) ( )	Always
60	z21-4 (VA59) (-) - z21-3 (VA60) ( )	Always
61	z21-15 (GA5) (-) - z21-14 (VA61) ( )	Always
62	z21-14 (VA61) (-) - z21-13 (VA62) ( )	Always
63	z21-13 (VA62) (-) - z21-12 (VA63) ( )	Always
64	z21-12 (VA63) (-) - z21-11 (VA64) ( )	Always
65	z21-11 (VA64) (-) - z21-10 (VA65) ( )	Always
66	z21-10 (VA65) (-) - z21-9 (VA66) ( )	Always
67	z21-9 (VA66) (-) - z21-8 (VA67) ( )	Always
68	z21-8 (VA67) (-) - z21-7 (VA68) ( )	Always
69	z21-7 (VA68) (-) - z21-2 (VA69) ( )	Always
70	z21-2 (VA69) (-) - z21-1 (VA70) ( )	Always
71	z21-1 (VA70) (-) - z21-6 (VA71) ( )	Always
72	z21-6 (VA71) (-) - z21-5 (VA72) ( )	Always

CAUTION:

Make sure not to cross the electrodes of an electrical tester measurement terminals.

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

Post-procedure1

(d) Reconnect the battery voltage sensor connectors.

REPLACE BATTERY VOLTAGE SENSOR

14.	CHECK BATTERY VOLTAGE SENSOR (VA49 - VA72)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery voltage sensor which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

Component without harness connected

(Battery Voltage Sensor)

Standard Resistance:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
49	z22-11 (GA4) (-) - z22-10 (VA49) ( )	Always	50 kΩ or more
50	z22-10 (VA49) (-) - z22-9 (VA50) ( )	Always	50 kΩ or more
51	z22-9 (VA50) (-) - z22-3 (VA51) ( )	Always	50 kΩ or more
52	z22-3 (VA51) (-) - z22-8 (VA52) ( )	Always	50 kΩ or more
53	z22-8 (VA52) (-) - z22-2 (VA53) ( )	Always	50 kΩ or more
54	z22-2 (VA53) (-) - z22-7 (VA54) ( )	Always	50 kΩ or more
55	z22-7 (VA54) (-) - z22-1 (VA55) ( )	Always	50 kΩ or more
56	z22-1 (VA55) (-) - z22-6 (VA56) ( )	Always	50 kΩ or more
57	z22-6 (VA56) (-) - z21-17 (VA57) ( )	Always	50 kΩ or more
58	z21-17 (VA57) (-) - z21-16 (VA58) ( )	Always	50 kΩ or more
59	z21-16 (VA58) (-) - z21-4 (VA59) ( )	Always	50 kΩ or more
60	z21-4 (VA59) (-) - z21-3 (VA60) ( )	Always	50 kΩ or more
61	z21-15 (GA5) (-) - z21-14 (VA61) ( )	Always	50 kΩ or more
62	z21-14 (VA61) (-) - z21-13 (VA62) ( )	Always	50 kΩ or more
63	z21-13 (VA62) (-) - z21-12 (VA63) ( )	Always	50 kΩ or more
64	z21-12 (VA63) (-) - z21-11 (VA64) ( )	Always	50 kΩ or more
65	z21-11 (VA64) (-) - z21-10 (VA65) ( )	Always	50 kΩ or more
66	z21-10 (VA65) (-) - z21-9 (VA66) ( )	Always	50 kΩ or more
67	z21-9 (VA66) (-) - z21-8 (VA67) ( )	Always	50 kΩ or more
68	z21-8 (VA67) (-) - z21-7 (VA68) ( )	Always	50 kΩ or more
69	z21-7 (VA68) (-) - z21-2 (VA69) ( )	Always	50 kΩ or more
70	z21-2 (VA69) (-) - z21-1 (VA70) ( )	Always	50 kΩ or more
71	z21-1 (VA70) (-) - z21-6 (VA71) ( )	Always	50 kΩ or more
72	z21-6 (VA71) (-) - z21-5 (VA72) ( )	Always	50 kΩ or more

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Read the resistance after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery voltage sensor.

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

Post-procedure1

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

15.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground (P0E6D11)

DESCRIPTION

Refer to the description for DTC P0D0A11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0E6D11

Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground

Short to ground in the CHRP circuit:

Primary circuit of CHRP is malfunctioning.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0E6F

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction of its HV battery charging system precharge contactor control circuit (CHRP), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0E6F (INF P0E6D11): Battery Charging System Precharge Contactor Control Circuit
Required sensors/components	Charge relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0E6F (INF P0E6D11) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Enter the following menus: Powertrain / Hybrid Control / Data List.[*1]
Check that "Hybrid/EV Battery SOC" shows 70% or less.[*2]
Turn the ignition switch off and wait for 2 minutes or more.[*3]
Connect the electric Toyota Prius vehicle charger cable assembly, and plug-in charge the vehicle for at least 5 seconds.[*4]
HINT:

[*1] to [*4]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0D0A11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x4-7 (CHRP) - Body ground	Ignition switch off	140 to 290 Ω	Ω

Post-procedure1

(d) Reconnect the battery ECU assembly connector.

REPLACE BATTERY ECU ASSEMBLY

3.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

4.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) and x4-7 (CHRP) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open (P0E6D15)

DESCRIPTION

Refer to the description for DTC P0D0A11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P0E6D15

Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open

Open or short to B in CHRP circuit:

Primary circuit of CHRP is malfunctioning.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P0E70

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction of its HV battery charging system precharge contactor control circuit (CHRP), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0E70 (INF P0E6D15): Battery Charging System Precharge Contactor Control Circuit
Required sensors/components	Charge relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P0E70 (INF P0E6D15) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0D0A11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	READ VALUE USING GTS (AC CHARGING PRECHARGE RELAY STATUS)

Pre-procedure1

(a) None

Procedure1

(b) Read the Data List.

Powertrain > HV Battery > Data List

Tester Display
AC Charging Precharge Relay Status

Standard:

Tester Display	Condition	Specified Condition
AC Charging Precharge Relay Status	Ignition switch ON	OFF

Result	Proceed to
The value of AC Charging Precharge Relay Status is OFF	A
The value of AC Charging Precharge Relay Status is ON	B

Post-procedure1

GO TO STEP 4

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

3.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CHECK FOR INTERMITTENT PROBLEMS

CONNECT SECURELY

4.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

5.	CHECK HARNESS AND CONNECTOR (CHRP VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x4-7 (CHRP) - Body ground	Ignition switch ON	Below 1 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the battery ECU assembly connector.

(j) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

6.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

Click here

GO TO STEP 9

7.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

8.	CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) - x4-7 (CHRP)	Ignition switch off	Below 1 Ω	Ω

Standard Resistance (Check for Short):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) and x4-7 (CHRP) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) and x4-7 (CHRP) - Body ground	Ignition switch ON	Below 1 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery device box assembly connector.

(l) Reconnect the battery ECU assembly connector.

(m) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

CONNECT SECURELY

10.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) - x4-7 (CHRP)	Ignition switch off	Below 1 Ω	Ω

Standard Resistance (Check for Short):

Click Location & Routing(x13,x4) Click Connector(x13) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) and x4-7 (CHRP) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the No. 1 traction battery device box assembly connector.

(f) Reconnect the battery ECU assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY - BODY GROUND)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	INSPECT NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (CHRP)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery device box assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Component without harness connected

(No. 1 Traction Battery Device Box Assembly)

Standard Resistance:

Click Location & Routing(x13) Click Connector(x13)

Tester Connection	Condition	Specified Condition	Result
x13-2 (CHRP) - x13-3 (GND8)	-40 to 80°C (-40 to 176°F)	140 to 290 Ω	Ω

Post-procedure1

(d) Reconnect the No. 1 traction battery device box assembly connector.

CHECK FOR INTERMITTENT PROBLEMS

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure (P19CF62)

DESCRIPTION

The battery ECU assembly monitors the HV battery coolant temperature using the battery pack coolant temperature sensors (thermistors).

The battery ECU assembly detects malfunctions in the battery pack coolant temperature sensors (thermistors) and outputs DTCs.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P19CF62

Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure

Difference between the values of 4 battery pack coolant temperature sensors is the specified value or more

(1 trip detection logic)

No. 1 traction battery cooler tube (duct inlet 1)
No. 1 traction battery cooler conductor (duct outlet 1)
Wire harness or connector
Battery ECU assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code: P19CF

MONITOR DESCRIPTION

The battery ECU assembly detects malfunctions in the battery pack coolant temperature sensors (thermistors) and outputs DTCs.

MONITOR STRATEGY

Related DTCs	P19CF (INF P19CF62): Hybrid/EV Battery Pack Coolant Temperature Sensor Signal Compare Failure
Required sensors/components	Air Conditioning Thermistor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P19CF (INF P19CF62) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 30 minutes or more.[*1]
Turn the ignition switch to ON (READY) and wait for 1 minute or more.[*2]
HINT:

[*1] to [*2]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0C4211.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P19CF62" only is output.	A
DTCs except "P19CF62" of hybrid battery system are output.	B

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

HINT:

Click here

CONNECT SECURELY

3.	CHECK NO. 1 TRACTION BATTERY COOLER TUBE (DUCT INLET 1)

HINT:

Click here

GO TO STEP 6

4.	CHECK NO. 1 TRACTION BATTERY COOLER CONDUCTOR (DUCT OUTLET 1)

HINT:

Click here

REPLACE BATTERY ECU ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY COOLER CONDUCTOR (DUCT OUTLET 1) - BATTERY ECU ASSEMBLY)

HINT:

Click here

REPLACE NO. 1 TRACTION BATTERY COOLER CONDUCTOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY COOLER TUBE (DUCT INLET 1) - BATTERY ECU ASSEMBLY)

HINT:

Click here

REPLACE NO. 1 TRACTION BATTERY COOLER TUBE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range (P1A001C,P1A051C,P301A1C)

DESCRIPTION

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors the voltage of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1A001C

Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range

An open is detected in the HV battery cell voltage detection circuits of the No. 2 HV supply stack sub-assembly.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A00

P1A051C

Hybrid Battery Stack 3 Cell Voltage Detection Voltage Out of Range

An open is detected in the HV battery cell voltage detection circuits of the No. 3 HV supply stack sub-assembly.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A05

P301A1C

Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range

An open is detected in the HV battery cell voltage detection circuits of the No. 1 HV supply stack sub-assembly.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P301A

MONITOR DESCRIPTION

If the voltage of an HV battery cell is abnormal, the battery ECU assembly will determine that a malfunction has occurred. When the malfunction detection condition is satisfied, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1A00 (INF P1A001C), P1A05 (INF P1A051C), P301A (INF P301A1C): Battery voltage detection circuits malfunction
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1A00 (INF P1A001C) is not detected

DTC P1A05 (INF P1A051C) is not detected

DTC P301A (INF P301A1C) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1A001C, P1A051C or P301A1C" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open
	P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open
	P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open
	P1AC713	Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open
	P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On
	P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On
	P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On
	P1AC79E	Hybrid/EV Battery Stack 4 Current Interrupt Device Stuck On
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1A001C" is also output.	A
"P1A051C" is also output.	B
"P301A1C" is also output.	C

GO TO STEP 6

GO TO STEP 9

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

4.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 25 Voltage" through "Hybrid/EV Battery Cell 48 Voltage" for DTC P1A001C and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

5.	CHECK NO. 2 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 25 TO 48 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE BATTERY VOLTAGE SENSOR

6.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

7.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 49 Voltage" through "Hybrid/EV Battery Cell 72 Voltage" for DTC P1A051C and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

8.	CHECK NO. 3 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 49 TO 72 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE BATTERY VOLTAGE SENSOR

9.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Connector is not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

10.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 24 Voltage" for DTC P301A1C and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

11.	CHECK NO. 1 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 1 TO 24 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE BATTERY VOLTAGE SENSOR

Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold (P1A6017,P1A6317,P31AA17)

DESCRIPTION

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors the voltage of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1A6017

Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold

Charging continues to be performed after the voltage of any cell of the No. 2 HV supply stack sub-assembly has exceeded the threshold.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Hybrid Toyota Prius vehicle control ECU

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A60

P1A6317

Hybrid/EV Battery Stack 3 Cell Circuit Voltage Above Threshold

Charging continues to be performed after the voltage of any cell of the No. 3 HV supply stack sub-assembly has exceeded the threshold.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Hybrid Toyota Prius vehicle control ECU

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A63

P31AA17

Hybrid/EV Battery Stack 1 Cell Circuit Voltage Above Threshold

Charging continues to be performed after the voltage of any cell of the No. 1 HV supply stack sub-assembly has exceeded the threshold.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Hybrid Toyota Prius vehicle control ECU

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P31AA

MONITOR DESCRIPTION

If the battery ECU assembly detects that the voltage of a HV battery cell is excessively high, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1A60 (INF P1A6017), P1A63 (INF P1A6317), P31AA (INF P31AA17): Cell voltage high
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1A60 (INF P1A6017) is not detected

DTC P1A63 (INF P1A6317) is not detected

DTC P31AA (INF P31AA17) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
P0C3000 or P31B300 is not output	A
P0C3000 or P31B300 is output	B

Post-procedure1

GO TO STEP 3

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1A6017" is also output.	A
"P1A6317" is also output.	B
"P31AA17" is also output.	C

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1A6017" is also output.	A
"P1A6317" is also output.	B
"P31AA17" is also output.	C

GO TO STEP 5

GO TO STEP 6

4.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

5.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

6.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold (P1A6116,P1A6416,P31AB16)

DESCRIPTION

If the voltage of an HV battery cell is lower than the threshold for a certain amount of time, the battery voltage sensor will interpret this as a malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1A6116

Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold

The voltage of any cell of the No. 2 HV supply stack sub-assembly has decreased excessively.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A61

P1A6416

Hybrid/EV Battery Stack 3 Cell Circuit Voltage Below Threshold

The voltage of any cell of the No. 3 HV supply stack sub-assembly has decreased excessively.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A64

P31AB16

Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold

The voltage of any cell of the No. 1 HV supply stack sub-assembly has decreased excessively.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P31AB

MONITOR DESCRIPTION

If the battery ECU assembly detects that the voltage of any HV battery cell has decreased excessively, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1A61 (INF P1A6116), P1A64 (INF P1A6416), P31AB (INF P31AB16): Cell voltage low
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1A61 (INF P1A6116) is not detected

DTC P1A64 (INF P1A6416) is not detected

DTC P31AB (INF P31AB16) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1A6116, P1A6416 or P31AB16" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open
	P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open
	P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open
	P1AC713	Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open
	P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On
	P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On
	P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On
	P1AC79E	Hybrid/EV Battery Stack 4 Current Interrupt Device Stuck On
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1A6116" is also output.	A
"P1A6416" is also output.	B
"P31AB16" is also output.	C

GO TO STEP 8

GO TO STEP 13

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

4.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 25 voltage" through "Hybrid/EV Battery Cell 48 voltage" for DTC P1A6116 and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

5.	CHECK NO. 2 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 25 TO 48 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

6.	CHECK BATTERY VOLTAGE SENSOR (VA25 - VA48)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

7.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

8.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

9.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 49 voltage" through "Hybrid/EV Battery Cell 72 voltage" for DTC P1A6416 and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

10.	CHECK NO. 3 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 49 TO 72 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

11.	CHECK BATTERY VOLTAGE SENSOR (VA49 - VA72)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

12.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

13.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Connector is not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

14.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 voltage" through "Hybrid/EV Battery Cell 24 voltage" for DTC P31AB16 and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

15.	CHECK NO. 1 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 1 TO 24 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

16.	CHECK BATTERY VOLTAGE SENSOR (VA1 - VA24)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

17.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) (P1A8100,P1A8600,P1A8B00)

DESCRIPTION

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors the difference in capacity of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1A8100

Hybrid/EV Battery Stack 1 Delta SOC High (Extreme)

The difference in capacity of each cell of the No. 1 HV supply stack sub-assembly exceeds the specified value excessively.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Service plug grip
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A81

P1A8600

Hybrid/EV Battery Stack 2 Delta SOC High (Extreme)

The difference in capacity of each cell of the No. 2 HV supply stack sub-assembly exceeds the specified value excessively.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Service plug grip
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A86

P1A8B00

Hybrid/EV Battery Stack 3 Delta SOC High (Extreme)

The difference in capacity of each cell of the No. 3 HV supply stack sub-assembly exceeds the specified value excessively.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Service plug grip
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1A8B

HINT:

These DTCs can be stored after clearing the DTCs and driving the Toyota Prius vehicle for approximately 12 minutes.

MONITOR DESCRIPTION

If the battery ECU assembly detects that the difference in capacity of each HV battery cell exceeds the specified value (excessively), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1A81 (INF P1A8100), P1A86 (INF P1A8600), P1A8B (INF P1A8B00): Battery cell malfunction
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1A81 (INF P1A8100) is not detected

DTC P1A86 (INF P1A8600) is not detected

DTC P1A8B (INF P1A8B00) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 12 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1A8100, P1A8600 or P1A8B00" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P0ABF28	Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure
	P0ABF2A	Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range
	P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open
	P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open
	P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open
	P1AC713	Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open
	P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On
	P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On
	P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On
	P1AC79E	Hybrid/EV Battery Stack 4 Current Interrupt Device Stuck On
	P1CBB12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery
	P1CBB14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open
	P1CC81E	Hybrid/EV Battery Stack 1 Voltage Difference Out of Range
	P1CC91E	Hybrid/EV Battery Stack 2 Voltage Difference Out of Range
	P1CCA1E	Hybrid/EV Battery Stack 3 Voltage Difference Out of Range
	P1CCB1E	Hybrid/EV Battery Stack 4 Voltage Difference Out of Range
Hybrid control system	P0B231C	Hybrid/EV Battery "A" Voltage Sensor Voltage Out of Range
Hybrid control system	P1C2D62	Hybrid/EV Battery "A" Voltage Sensor/ Boosting Converter Voltage Sensor "A" Signal Compare Failure

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1A8100" is also output.	A
"P1A8600" is also output.	B
"P1A8B00" is also output.	C

GO TO STEP 7

GO TO STEP 11

3.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 24 Voltage" for DTC P1A8100 and make a note if the value of any is the lowest voltage value.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

4.	CHECK BATTERY VOLTAGE SENSOR (VA1 - VA24)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

5.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

6.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE SERVICE PLUG GRIP

7.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 25 Voltage" through "Hybrid/EV Battery Cell 48 Voltage" for DTC P1A8600 and make a note if the value of any is the lowest voltage value.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

8.	CHECK BATTERY VOLTAGE SENSOR (VA25 - VA48)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

9.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

10.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE SERVICE PLUG GRIP

11.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 49 Voltage" through "Hybrid/EV Battery Cell 72 Voltage" for DTC P1A8B00 and make a note if the value of any is the lowest voltage value.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

12.	CHECK BATTERY VOLTAGE SENSOR (VA49 - VA72)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

13.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

14.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE SERVICE PLUG GRIP

Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open (P1AC413-P1AC613)

DESCRIPTION

The battery ECU assembly restricts charging and discharging of the HV battery and stores a DTC when a current interrupt device (CID) located in an HV battery cell has operated and the high voltage circuit is disconnected.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1AC413

Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open

A shut-off by a CID occurs.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AC4

P1AC513

Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open

A shut-off by a CID occurs.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AC5

P1AC613

Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open

A shut-off by a CID occurs.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AC6

MONITOR DESCRIPTION

If a current interrupt device (CID) located in a HV battery cell is shut off, the battery ECU assembly prohibits charging and discharging, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1AC4 (INF P1AC413): Hybrid/EV Battery Cell Voltage Low Pack 1 Stack "A" at CID interception P1AC5 (INF P1AC513): Hybrid/EV Battery Cell Voltage Low Pack 1 Stack "B" at CID interception P1AC6 (INF P1AC613): Hybrid/EV Battery Cell Voltage Low Pack 1 Stack "C" at CID interception
Required sensors/components	HV battery
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1AC4 (INF P1AC413) is not detected

DTC P1AC5 (INF P1AC513) is not detected

DTC P1AC6 (INF P1AC613) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
Turn the ignition switch off and wait for 2 minutes or more.[*2]
Turn the ignition switch to ON (READY) and wait for 30 minutes or more.[*3]
HINT:

[*1] to [*3]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

Be sure to check that the applicable DTC is output from the hybrid battery system.
After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here
Do not turn the ignition switch to ON (READY) until the repair is completed.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1AC413, P1AC513 or P1AC613" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1AC413" is also output.	A
"P1AC513" is also output.	B
"P1AC613" is also output.	C

GO TO STEP 8

GO TO STEP 13

3.	READ VALUE USING GTS (HYBRID/EV BATTERY CELL 1 TO 24 VOLTAGE)

Pre-procedure1

(a) None

Procedure1

(b) Read the value of Data List items "Hybrid/EV battery cell 1 voltage" through "Hybrid/EV battery cell 24 voltage" and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Cell 1 Voltage
Hybrid/EV Battery Cell 2 Voltage
Hybrid/EV Battery Cell 3 Voltage
Hybrid/EV Battery Cell 4 Voltage
Hybrid/EV Battery Cell 5 Voltage
Hybrid/EV Battery Cell 6 Voltage
Hybrid/EV Battery Cell 7 Voltage
Hybrid/EV Battery Cell 8 Voltage
Hybrid/EV Battery Cell 9 Voltage
Hybrid/EV Battery Cell 10 Voltage
Hybrid/EV Battery Cell 11 Voltage
Hybrid/EV Battery Cell 12 Voltage
Hybrid/EV Battery Cell 13 Voltage
Hybrid/EV Battery Cell 14 Voltage
Hybrid/EV Battery Cell 15 Voltage
Hybrid/EV Battery Cell 16 Voltage
Hybrid/EV Battery Cell 17 Voltage
Hybrid/EV Battery Cell 18 Voltage
Hybrid/EV Battery Cell 19 Voltage
Hybrid/EV Battery Cell 20 Voltage
Hybrid/EV Battery Cell 21 Voltage
Hybrid/EV Battery Cell 22 Voltage
Hybrid/EV Battery Cell 23 Voltage
Hybrid/EV Battery Cell 24 Voltage

Post-procedure1

4.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connector.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

5.	CHECK NO. 1 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 1 TO 24 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

6.	CHECK BATTERY VOLTAGE SENSOR (VA1 - VA24)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery voltage sensor which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

Component without harness connected

(Battery Voltage Sensor)

Standard Voltage:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
1	z18-6 (GA0) (-) - z18-5 (VA1) ( )	Always	0.3 to 1.0 V
2	z18-5 (VA1) (-) - z18-4 (VA2) ( )	Always	0.3 to 1.0 V
3	z18-4 (VA2) (-) - z18-1 (VA3) ( )	Always	0.3 to 1.0 V
4	z18-1 (VA3) (-) - z18-3 (VA4) ( )	Always	0.3 to 1.0 V
5	z18-3 (VA4) (-) - z17-27 (VA5) ( )	Always	0.3 to 1.0 V
6	z17-27 (VA5) (-) - z17-17 (VA6) ( )	Always	0.3 to 1.0 V
7	z17-17 (VA6) (-) - z17-16 (VA7) ( )	Always	0.3 to 1.0 V
8	z17-16 (VA7) (-) - z17-4 (VA8) ( )	Always	0.3 to 1.0 V
9	z17-4 (VA8) (-) - z17-3 (VA9) ( )	Always	0.3 to 1.0 V
10	z17-3 (VA9) (-) - z17-15 (VA10) ( )	Always	0.3 to 1.0 V
11	z17-15 (VA10) (-) - z17-14 (VA11) ( )	Always	0.3 to 1.0 V
12	z17-14 (VA11) (-) - z17-13 (VA12) ( )	Always	0.3 to 1.0 V
13	z17-12 (GA1) (-) - z17-23 (VA13) ( )	Always	0.3 to 1.0 V
14	z17-23 (VA13) (-) - z17-11 (VA14) ( )	Always	0.3 to 1.0 V
15	z17-11 (VA14) (-) - z17-10 (VA15) ( )	Always	0.3 to 1.0 V
16	z17-10 (VA15) (-) - z17-9 (VA16) ( )	Always	0.3 to 1.0 V
17	z17-9 (VA16) (-) - z17-8 (VA17) ( )	Always	0.3 to 1.0 V
18	z17-8 (VA17) (-) - z17-20 (VA18) ( )	Always	0.3 to 1.0 V
19	z17-20 (VA18) (-) - z17-7 (VA19) ( )	Always	0.3 to 1.0 V
20	z17-7 (VA19) (-) - z17-2 (VA20) ( )	Always	0.3 to 1.0 V
21	z17-2 (VA20) (-) - z17-1 (VA21) ( )	Always	0.3 to 1.0 V
22	z17-1 (VA21) (-) - z17-6 (VA22) ( )	Always	0.3 to 1.0 V
23	z17-6 (VA22) (-) - z17-5 (VA23) ( )	Always	0.3 to 1.0 V
24	z17-5 (VA23) (-) - z17-18 (VA24) ( )	Always	0.3 to 1.0 V

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Be sure to set the Toyota electrical tester to diode range when performing this test.
Read the voltage after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of the battery voltage sensor.

Result	Proceed to
The voltage between the terminals is 0.3 to 1.0 V.	A
Other than above	B

Post-procedure1

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

7.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

8.	READ VALUE USING GTS (HYBRID/EV BATTERY CELL 25 TO 48 VOLTAGE)

Pre-procedure1

(a) None

Procedure1

(b) Read the value of Data List items "Hybrid/EV battery cell 25 voltage" through "Hybrid/EV battery cell 48 voltage" and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Cell 25 Voltage
Hybrid/EV Battery Cell 26 Voltage
Hybrid/EV Battery Cell 27 Voltage
Hybrid/EV Battery Cell 28 Voltage
Hybrid/EV Battery Cell 29 Voltage
Hybrid/EV Battery Cell 30 Voltage
Hybrid/EV Battery Cell 31 Voltage
Hybrid/EV Battery Cell 32 Voltage
Hybrid/EV Battery Cell 33 Voltage
Hybrid/EV Battery Cell 34 Voltage
Hybrid/EV Battery Cell 35 Voltage
Hybrid/EV Battery Cell 36 Voltage
Hybrid/EV Battery Cell 37 Voltage
Hybrid/EV Battery Cell 38 Voltage
Hybrid/EV Battery Cell 39 Voltage
Hybrid/EV Battery Cell 40 Voltage
Hybrid/EV Battery Cell 41 Voltage
Hybrid/EV Battery Cell 42 Voltage
Hybrid/EV Battery Cell 43 Voltage
Hybrid/EV Battery Cell 44 Voltage
Hybrid/EV Battery Cell 45 Voltage
Hybrid/EV Battery Cell 46 Voltage
Hybrid/EV Battery Cell 47 Voltage
Hybrid/EV Battery Cell 48 Voltage

Post-procedure1

9.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

10.	CHECK NO. 2 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 25 TO 48 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

11.	CHECK BATTERY VOLTAGE SENSOR (VA25 - VA48)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery voltage sensor which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

Component without harness connected

(Battery Voltage Sensor)

Standard Voltage:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
25	z20-12 (GA2) (-) - z20-11 (VA25) ( )	Always	0.3 to 1.0 V
26	z20-11 (VA25) (-) - z20-10 (VA26) ( )	Always	0.3 to 1.0 V
27	z20-10 (VA26) (-) - z20-9 (VA27) ( )	Always	0.3 to 1.0 V
28	z20-9 (VA27) (-) - z20-8 (VA28) ( )	Always	0.3 to 1.0 V
29	z20-8 (VA28) (-) - z20-20 (VA29) ( )	Always	0.3 to 1.0 V
30	z20-20 (VA29) (-) - z20-7 (VA30) ( )	Always	0.3 to 1.0 V
31	z20-7 (VA30) (-) - z20-2 (VA31) ( )	Always	0.3 to 1.0 V
32	z20-2 (VA31) (-) - z20-1 (VA32) ( )	Always	0.3 to 1.0 V
33	z20-1 (VA32) (-) - z20-6 (VA33) ( )	Always	0.3 to 1.0 V
34	z20-6 (VA33) (-) - z20-5 (VA34) ( )	Always	0.3 to 1.0 V
35	z20-5 (VA34) (-) - z20-18 (VA35) ( )	Always	0.3 to 1.0 V
36	z20-18 (VA35) (-) - z19-21 (VA36) ( )	Always	0.3 to 1.0 V
37	z19-13 (GA3) (-) - z19-2 (VA37) ( )	Always	0.3 to 1.0 V
38	z19-2 (VA37) (-) - z19-12 (VA38) ( )	Always	0.3 to 1.0 V
39	z19-12 (VA38) (-) - z19-11 (VA39) ( )	Always	0.3 to 1.0 V
40	z19-11 (VA39) (-) - z19-10 (VA40) ( )	Always	0.3 to 1.0 V
41	z19-10 (VA40) (-) - z19-9 (VA41) ( )	Always	0.3 to 1.0 V
42	z19-9 (VA41) (-) - z19-8 (VA42) ( )	Always	0.3 to 1.0 V
43	z19-8 (VA42) (-) - z19-7 (VA43) ( )	Always	0.3 to 1.0 V
44	z19-7 (VA43) (-) - z19-6 (VA44) ( )	Always	0.3 to 1.0 V
45	z19-6 (VA44) (-) - z19-5 (VA45) ( )	Always	0.3 to 1.0 V
46	z19-5 (VA45) (-) - z19-4 (VA46) ( )	Always	0.3 to 1.0 V
47	z19-4 (VA46) (-) - z19-1 (VA47) ( )	Always	0.3 to 1.0 V
48	z19-1 (VA47) (-) - z19-3 (VA48) ( )	Always	0.3 to 1.0 V

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Be sure to set the Toyota electrical tester to diode range when performing this test.
Read the voltage after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of the battery voltage sensor.

Result	Proceed to
The voltage between the terminals is 0.3 to 1.0 V.	A
Other than above	B

Post-procedure1

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

12.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

13.	READ VALUE USING GTS (HYBRID/EV BATTERY CELL 49 TO 72 VOLTAGE)

Pre-procedure1

(a) None

Procedure1

(b) Read the value of Data List items "Hybrid/EV battery cell 49 voltage" through "Hybrid/EV battery cell 72 voltage" and make a note if the value of any is 1.6 V or less.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Cell 49 Voltage
Hybrid/EV Battery Cell 50 Voltage
Hybrid/EV Battery Cell 51 Voltage
Hybrid/EV Battery Cell 52 Voltage
Hybrid/EV Battery Cell 53 Voltage
Hybrid/EV Battery Cell 54 Voltage
Hybrid/EV Battery Cell 55 Voltage
Hybrid/EV Battery Cell 56 Voltage
Hybrid/EV Battery Cell 57 Voltage
Hybrid/EV Battery Cell 58 Voltage
Hybrid/EV Battery Cell 59 Voltage
Hybrid/EV Battery Cell 60 Voltage
Hybrid/EV Battery Cell 61 Voltage
Hybrid/EV Battery Cell 62 Voltage
Hybrid/EV Battery Cell 63 Voltage
Hybrid/EV Battery Cell 64 Voltage
Hybrid/EV Battery Cell 65 Voltage
Hybrid/EV Battery Cell 66 Voltage
Hybrid/EV Battery Cell 67 Voltage
Hybrid/EV Battery Cell 68 Voltage
Hybrid/EV Battery Cell 69 Voltage
Hybrid/EV Battery Cell 70 Voltage
Hybrid/EV Battery Cell 71 Voltage
Hybrid/EV Battery Cell 72 Voltage

Post-procedure1

14.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

15.	CHECK NO. 3 HV SUPPLY STACK SUB-ASSEMBLY (HYBRID BATTERY CELL 49 TO 72 VOLTAGE)

Click here

Result	Proceed to
The voltage between the terminals is 1.6 V or less.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

16.	CHECK BATTERY VOLTAGE SENSOR (VA49 - VA72)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

HINT:

Only inspect the terminals of the battery voltage sensor which correspond to the HV battery cells which measured 1.6 V or less in the previous step.

Component without harness connected

(Battery Voltage Sensor)

Standard Voltage:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
49	z22-11 (GA4) (-) - z22-10 (VA49) ( )	Always	0.3 to 1.0 V
50	z22-10 (VA49) (-) - z22-9 (VA50) ( )	Always	0.3 to 1.0 V
51	z22-9 (VA50) (-) - z22-3 (VA51) ( )	Always	0.3 to 1.0 V
52	z22-3 (VA51) (-) - z22-8 (VA52) ( )	Always	0.3 to 1.0 V
53	z22-8 (VA52) (-) - z22-2 (VA53) ( )	Always	0.3 to 1.0 V
54	z22-2 (VA53) (-) - z22-7 (VA54) ( )	Always	0.3 to 1.0 V
55	z22-7 (VA54) (-) - z22-1 (VA55) ( )	Always	0.3 to 1.0 V
56	z22-1 (VA55) (-) - z22-6 (VA56) ( )	Always	0.3 to 1.0 V
57	z22-6 (VA56) (-) - z21-17 (VA57) ( )	Always	0.3 to 1.0 V
58	z21-17 (VA57) (-) - z21-16 (VA58) ( )	Always	0.3 to 1.0 V
59	z21-16 (VA58) (-) - z21-4 (VA59) ( )	Always	0.3 to 1.0 V
60	z21-4 (VA59) (-) - z21-3 (VA60) ( )	Always	0.3 to 1.0 V
61	z21-15 (GA5) (-) - z21-14 (VA61) ( )	Always	0.3 to 1.0 V
62	z21-14 (VA61) (-) - z21-13 (VA62) ( )	Always	0.3 to 1.0 V
63	z21-13 (VA62) (-) - z21-12 (VA63) ( )	Always	0.3 to 1.0 V
64	z21-12 (VA63) (-) - z21-11 (VA64) ( )	Always	0.3 to 1.0 V
65	z21-11 (VA64) (-) - z21-10 (VA65) ( )	Always	0.3 to 1.0 V
66	z21-10 (VA65) (-) - z21-9 (VA66) ( )	Always	0.3 to 1.0 V
67	z21-9 (VA66) (-) - z21-8 (VA67) ( )	Always	0.3 to 1.0 V
68	z21-8 (VA67) (-) - z21-7 (VA68) ( )	Always	0.3 to 1.0 V
69	z21-7 (VA68) (-) - z21-2 (VA69) ( )	Always	0.3 to 1.0 V
70	z21-2 (VA69) (-) - z21-1 (VA70) ( )	Always	0.3 to 1.0 V
71	z21-1 (VA70) (-) - z21-6 (VA71) ( )	Always	0.3 to 1.0 V
72	z21-6 (VA71) (-) - z21-5 (VA72) ( )	Always	0.3 to 1.0 V

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Be sure to set the Toyota electrical tester to diode range when performing this test.
Read the voltage after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of the battery voltage sensor.

Result	Proceed to
The voltage between the terminals is 0.3 to 1.0 V.	A
Other than above	B

Post-procedure1

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

17.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On (P1AC49E-P1AC69E)

DESCRIPTION

Refer to the description for DTC P1AC413.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1AC49E

Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On

Conductivity returns after high voltage circuit disconnected by CID operation.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AC4

P1AC59E

Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On

Conductivity returns after high voltage circuit disconnected by CID operation.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AC5

P1AC69E

Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On

Conductivity returns after high voltage circuit disconnected by CID operation.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AC6

MONITOR DESCRIPTION

If a current interrupt device (CID) located in a HV battery cell is shut off, the battery ECU assembly prohibits charging and discharging, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1AC4 (INF P1AC49E): Hybrid/EV Battery Cell Voltage Low Pack 1 Stack "A" at CID interception P1AC5 (INF P1AC59E): Hybrid/EV Battery Cell Voltage Low Pack 1 Stack "B" at CID interception P1AC6 (INF P1AC69E): Hybrid/EV Battery Cell Voltage Low Pack 1 Stack "C" at CID interception
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1AC4 (INF P1AC49E) is not detected

DTC P1AC5 (INF P1AC59E) is not detected

DTC P1AC6 (INF P1AC69E) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
Turn the ignition switch off and wait for 2 minutes or more.[*2]
Turn the ignition switch to ON (READY) and wait for 30 seconds or more.[*3]
HINT:

[*1] to [*3]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1AC49E, P1AC59E or P1AC69E" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1AC49E" is also output.	A
"P1AC59E" is also output.	B
"P1AC69E" is also output.	C

GO TO STEP 6

GO TO STEP 9

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Connector is not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

4.	CHECK BATTERY VOLTAGE SENSOR (VA1 - VA24)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Component without harness connected

(Battery Voltage Sensor)

Standard Voltage:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
1	z18-6 (GA0) (-) - z18-5 (VA1) ( )	Always	0.3 to 1.0 V
2	z18-5 (VA1) (-) - z18-4 (VA2) ( )	Always	0.3 to 1.0 V
3	z18-4 (VA2) (-) - z18-1 (VA3) ( )	Always	0.3 to 1.0 V
4	z18-1 (VA3) (-) - z18-3 (VA4) ( )	Always	0.3 to 1.0 V
5	z18-3 (VA4) (-) - z17-27 (VA5) ( )	Always	0.3 to 1.0 V
6	z17-27 (VA5) (-) - z17-17 (VA6) ( )	Always	0.3 to 1.0 V
7	z17-17 (VA6) (-) - z17-16 (VA7) ( )	Always	0.3 to 1.0 V
8	z17-16 (VA7) (-) - z17-4 (VA8) ( )	Always	0.3 to 1.0 V
9	z17-4 (VA8) (-) - z17-3 (VA9) ( )	Always	0.3 to 1.0 V
10	z17-3 (VA9) (-) - z17-15 (VA10) ( )	Always	0.3 to 1.0 V
11	z17-15 (VA10) (-) - z17-14 (VA11) ( )	Always	0.3 to 1.0 V
12	z17-14 (VA11) (-) - z17-13 (VA12) ( )	Always	0.3 to 1.0 V
13	z17-12 (GA1) (-) - z17-23 (VA13) ( )	Always	0.3 to 1.0 V
14	z17-23 (VA13) (-) - z17-11 (VA14) ( )	Always	0.3 to 1.0 V
15	z17-11 (VA14) (-) - z17-10 (VA15) ( )	Always	0.3 to 1.0 V
16	z17-10 (VA15) (-) - z17-9 (VA16) ( )	Always	0.3 to 1.0 V
17	z17-9 (VA16) (-) - z17-8 (VA17) ( )	Always	0.3 to 1.0 V
18	z17-8 (VA17) (-) - z17-20 (VA18) ( )	Always	0.3 to 1.0 V
19	z17-20 (VA18) (-) - z17-7 (VA19) ( )	Always	0.3 to 1.0 V
20	z17-7 (VA19) (-) - z17-2 (VA20) ( )	Always	0.3 to 1.0 V
21	z17-2 (VA20) (-) - z17-1 (VA21) ( )	Always	0.3 to 1.0 V
22	z17-1 (VA21) (-) - z17-6 (VA22) ( )	Always	0.3 to 1.0 V
23	z17-6 (VA22) (-) - z17-5 (VA23) ( )	Always	0.3 to 1.0 V
24	z17-5 (VA23) (-) - z17-18 (VA24) ( )	Always	0.3 to 1.0 V

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Be sure to set the Toyota electrical tester to diode range when performing this test.
Read the voltage after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of the battery voltage sensor.

Result	Proceed to
The voltage between the terminals is 0.3 to 1.0 V.	A
Other than above	B

Post-procedure1

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

5.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

6.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

7.	CHECK BATTERY VOLTAGE SENSOR (VA25 - VA48)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Component without harness connected

(Battery Voltage Sensor)

Standard Voltage:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
25	z20-12 (GA2) (-) - z20-11 (VA25) ( )	Always	0.3 to 1.0 V
26	z20-11 (VA25) (-) - z20-10 (VA26) ( )	Always	0.3 to 1.0 V
27	z20-10 (VA26) (-) - z20-9 (VA27) ( )	Always	0.3 to 1.0 V
28	z20-9 (VA27) (-) - z20-8 (VA28) ( )	Always	0.3 to 1.0 V
29	z20-8 (VA28) (-) - z20-20 (VA29) ( )	Always	0.3 to 1.0 V
30	z20-20 (VA29) (-) - z20-7 (VA30) ( )	Always	0.3 to 1.0 V
31	z20-7 (VA30) (-) - z20-2 (VA31) ( )	Always	0.3 to 1.0 V
32	z20-2 (VA31) (-) - z20-1 (VA32) ( )	Always	0.3 to 1.0 V
33	z20-1 (VA32) (-) - z20-6 (VA33) ( )	Always	0.3 to 1.0 V
34	z20-6 (VA33) (-) - z20-5 (VA34) ( )	Always	0.3 to 1.0 V
35	z20-5 (VA34) (-) - z20-18 (VA35) ( )	Always	0.3 to 1.0 V
36	z20-18 (VA35) (-) - z19-21 (VA36) ( )	Always	0.3 to 1.0 V
37	z19-13 (GA3) (-) - z19-2 (VA37) ( )	Always	0.3 to 1.0 V
38	z19-2 (VA37) (-) - z19-12 (VA38) ( )	Always	0.3 to 1.0 V
39	z19-12 (VA38) (-) - z19-11 (VA39) ( )	Always	0.3 to 1.0 V
40	z19-11 (VA39) (-) - z19-10 (VA40) ( )	Always	0.3 to 1.0 V
41	z19-10 (VA40) (-) - z19-9 (VA41) ( )	Always	0.3 to 1.0 V
42	z19-9 (VA41) (-) - z19-8 (VA42) ( )	Always	0.3 to 1.0 V
43	z19-8 (VA42) (-) - z19-7 (VA43) ( )	Always	0.3 to 1.0 V
44	z19-7 (VA43) (-) - z19-6 (VA44) ( )	Always	0.3 to 1.0 V
45	z19-6 (VA44) (-) - z19-5 (VA45) ( )	Always	0.3 to 1.0 V
46	z19-5 (VA45) (-) - z19-4 (VA46) ( )	Always	0.3 to 1.0 V
47	z19-4 (VA46) (-) - z19-1 (VA47) ( )	Always	0.3 to 1.0 V
48	z19-1 (VA47) (-) - z19-3 (VA48) ( )	Always	0.3 to 1.0 V

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Be sure to set the Toyota electrical tester to diode range when performing this test.
Read the voltage after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of the battery voltage sensor.

Result	Proceed to
The voltage between the terminals is 0.3 to 1.0 V.	A
Other than above	B

Post-procedure1

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

8.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

9.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

10.	CHECK BATTERY VOLTAGE SENSOR (VA49 - VA72)

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage.

Pre-procedure1

(a) Remove the battery voltage sensor.

HINT:

Click here

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Component without harness connected

(Battery Voltage Sensor)

Standard Voltage:

Hybrid Battery Cell	Tester Connection (Tester Probe Polarity)	Condition	Specified Condition
49	z22-11 (GA4) (-) - z22-10 (VA49) ( )	Always	0.3 to 1.0 V
50	z22-10 (VA49) (-) - z22-9 (VA50) ( )	Always	0.3 to 1.0 V
51	z22-9 (VA50) (-) - z22-3 (VA51) ( )	Always	0.3 to 1.0 V
52	z22-3 (VA51) (-) - z22-8 (VA52) ( )	Always	0.3 to 1.0 V
53	z22-8 (VA52) (-) - z22-2 (VA53) ( )	Always	0.3 to 1.0 V
54	z22-2 (VA53) (-) - z22-7 (VA54) ( )	Always	0.3 to 1.0 V
55	z22-7 (VA54) (-) - z22-1 (VA55) ( )	Always	0.3 to 1.0 V
56	z22-1 (VA55) (-) - z22-6 (VA56) ( )	Always	0.3 to 1.0 V
57	z22-6 (VA56) (-) - z21-17 (VA57) ( )	Always	0.3 to 1.0 V
58	z21-17 (VA57) (-) - z21-16 (VA58) ( )	Always	0.3 to 1.0 V
59	z21-16 (VA58) (-) - z21-4 (VA59) ( )	Always	0.3 to 1.0 V
60	z21-4 (VA59) (-) - z21-3 (VA60) ( )	Always	0.3 to 1.0 V
61	z21-15 (GA5) (-) - z21-14 (VA61) ( )	Always	0.3 to 1.0 V
62	z21-14 (VA61) (-) - z21-13 (VA62) ( )	Always	0.3 to 1.0 V
63	z21-13 (VA62) (-) - z21-12 (VA63) ( )	Always	0.3 to 1.0 V
64	z21-12 (VA63) (-) - z21-11 (VA64) ( )	Always	0.3 to 1.0 V
65	z21-11 (VA64) (-) - z21-10 (VA65) ( )	Always	0.3 to 1.0 V
66	z21-10 (VA65) (-) - z21-9 (VA66) ( )	Always	0.3 to 1.0 V
67	z21-9 (VA66) (-) - z21-8 (VA67) ( )	Always	0.3 to 1.0 V
68	z21-8 (VA67) (-) - z21-7 (VA68) ( )	Always	0.3 to 1.0 V
69	z21-7 (VA68) (-) - z21-2 (VA69) ( )	Always	0.3 to 1.0 V
70	z21-2 (VA69) (-) - z21-1 (VA70) ( )	Always	0.3 to 1.0 V
71	z21-1 (VA70) (-) - z21-6 (VA71) ( )	Always	0.3 to 1.0 V
72	z21-6 (VA71) (-) - z21-5 (VA72) ( )	Always	0.3 to 1.0 V

NOTICE:

Make sure to check the polarity of each terminal (positive ( ) or negative (-)) before connecting a tester.
Be sure to set the Toyota electrical tester to diode range when performing this test.
Read the voltage after the value has stabilized.
In order to avoid damaging the terminals of the battery voltage sensor, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of the battery voltage sensor.

Result	Proceed to
The voltage between the terminals is 0.3 to 1.0 V.	A
Other than above	B

Post-procedure1

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

11.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE BATTERY VOLTAGE SENSOR

System Voltage (AM) Circuit Voltage Below Threshold (P1AFC00)

DESCRIPTION

The battery ECU assembly monitors its internal operation and will store a DTC when it detects an internal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1AFC00

System Voltage (AM) Circuit Voltage Below Threshold

The battery ECU assembly shutdown memory procedure did not complete normally in consecutive 40 trips.

(1 trip detection logic)

Wire harness or connector
Battery ECU assembly
Fuse

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AFC

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 11 seconds or more.*1
Turn the ignition switch off and wait for 2 minutes or more.*2
Perform the procedures *1 and *2 41 times or more.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P056014.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK FUSE (PHV BATT)

Click here

REPLACE FUSE (PHV BATT)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

3.	CHECK HARNESS AND CONNECTOR (AM VOLTAGE)

Click here

REPLACE BATTERY ECU ASSEMBLY

4.	CHECK HARNESS AND CONNECTOR (PHV BATT FUSE - BATTERY TERMINAL)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR (PHV BATT FUSE - BATTERY ECU ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR (PHV BATT FUSE - BATTERY TERMINAL)

Flying Capacitor Circuit Voltage Out of Range (P1AFD00)

DESCRIPTION

The battery ECU assembly monitors its internal operation and will store a DTC when it detects an internal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1AFD00

Flying Capacitor Circuit Voltage Out of Range

ECU internal malfunction

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
No. 2 HV supply stack sub-assembly
No. 3 HV supply stack sub-assembly
Battery ECU assembly
Battery voltage sensor
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AFD

MONITOR DESCRIPTION

The battery ECU assembly monitors its internal operation. If the voltage detection circuit is malfunctioning, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1AFD (INF P1AFD00): Battery stack voltage sense circuit
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1AFD (INF P1AFD00) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 30 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
Only P1AFD00 is output	A
P1AFD00 and other DTCs are output	B

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connector.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Connector z18 is not connected securely	The terminals are damaged or corroded	C
Connector z17 is not connected securely	The terminals are damaged or corroded	D
Connector z20 is not connected securely	The terminals are damaged or corroded	E
Connector z19 is not connected securely	The terminals are damaged or corroded	F
Connector z22 is not connected securely	The terminals are damaged or corroded	G
Connector z21 is not connected securely	The terminals are damaged or corroded	H

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BATTERY VOLTAGE SENSOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

NOTICE:

Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the voltage of each HV battery cell.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

CAUTION:

When disconnecting connector x6 of the battery voltage sensor, first disconnect connectors z17, z18, z19, z20, z21 and z22 from the battery voltage sensor.

NOTICE:

Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x1,x6) Click Connector(x1) Click Connector(x6)

Tester Connection	Condition	Specified Condition	Result
x1-20 (VBB0) - x6-21 (VBB0)	Ignition switch off	Below 1 Ω	Ω
x1-22 (GBB0) - x6-5 (GBB0)	Ignition switch off	Below 1 Ω	Ω

Post-procedure1

(e) Reconnect the x6 battery voltage sensor connector.

CAUTION:

When connecting connectors z17, z18, z19, z20, z21 and z22 of the battery voltage sensor, first connect connector x6 to the battery voltage sensor.

(f) Reconnect the battery ECU assembly connector.

REPLACE BATTERY ECU ASSEMBLY AND BATTERY VOLTAGE SENSOR

Battery ECU assembly: Click here

Battery voltage sensor: Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range (P1AFD1C)

DESCRIPTION

The battery ECU assembly monitors the HV battery voltage. If the battery ECU assembly detects a malfunction of its internal voltage detection circuits, it will store this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1AFD1C

Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range

Both of the following conditions are met:

The battery ECU assembly detects a malfunction of its internal voltage detection circuits.

The difference between the total voltage of all battery cells and the stack voltage is large.

(1 trip detection logic)

Battery ECU assembly
Battery voltage sensor
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1AFD

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in its internal voltage detection circuits, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1AFD (INF P1AFD1C): Hybrid/EV Battery Voltage Sensor Circuit Range/Performance
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1AFD (INF P1AFD1C) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
Only P1AFD1C is output	A
P1AFD1C and other DTCs are output	B

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BATTERY VOLTAGE SENSOR)

Click here

REPLACE BATTERY ECU ASSEMBLY AND BATTERY VOLTAGE SENSOR

Battery ECU assembly: Click here

Battery voltage sensor: Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground (P1B4011,P1B4015,P1B4511,P1B4515)

DESCRIPTION

Refer to the description for DTC P1B4A62.

Click here

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P1B4011	Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground	The HV battery heater temperature sensor 0 output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 traction battery heater Wire harness or connector Battery ECU assembly	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B42
P1B4015	Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Auxiliary Battery or Open	The HV battery heater temperature sensor 0 output voltage is higher than the standard value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 traction battery heater Wire harness or connector Battery ECU assembly	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B43
P1B4511	Hybrid/EV Battery Heater 2 Temperature Sensor Circuit Short to Ground	The HV battery heater temperature sensor 1 output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic)	No. 1 traction battery heater Wire harness or connector Battery ECU assembly	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B47
P1B4515	Hybrid/EV Battery Heater 2 Temperature Sensor Circuit Short to Auxiliary Battery or Open	The HV battery heater temperature sensor 1 output voltage is higher than the standard value (short to B or open) and the detected temperature is lower than the specified value. (1 trip detection logic)	No. 1 traction battery heater Wire harness or connector Battery ECU assembly	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P1B48

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a HV battery heater temperature sensor, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1B42 (INF P1B4011), P1B43 (INF P1B4015): Hybrid Battery Heater Temperature Sensor "A" P1B47 (INF P1B4511), P1B48 (INF P1B4515): Hybrid Battery Heater Temperature Sensor "B"
Required sensors/components	HV battery heater temperature sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1B42 (INF P1B4011) is not detected

DTC P1B43 (INF P1B4015) is not detected

DTC P1B47 (INF P1B4511) is not detected

DTC P1B48 (INF P1B4515) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 5 seconds or more.[*1]
HINT:
- Perform this step in a location where the ambient temperature is -10°C (14°F) or higher.
- [*1]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1B4A62.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1B4011, P1B4015, P1B4511 or P1B4515" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1B4011 or P1B4015" is also output.	A
"P1B4511 or P1B4515" is also output.	B

GO TO STEP 6

4.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0)

Click here

REPLACE BATTERY ECU ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0))

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1)

Click here

REPLACE BATTERY ECU ASSEMBLY

7.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1))

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure (P1B4A62)

DESCRIPTION

The battery ECU assembly monitors the temperature of the traction battery heater though the HV battery heater temperature sensors (thermistors), and performs control to increase the temperature of the HV battery to the target temperature.

The battery ECU assembly will store a DTC when it detects the HV battery heater temperature sensors (thermistors)l malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1B4A62

Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure

Difference between the values of 2 HV battery heater temperature sensor is the specified value or more

(1 trip detection logic)

Wire harness or connector
Battery ECU assembly
No. 1 traction battery heater

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1B4A

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in the HV battery heater temperature sensor (thermistor), the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1B4A (INF P1B4A62): Hybrid/EV Battery Heater Temperature Sensor Malfunction
Required sensors/components	HV battery heater temperature sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1B4A (INF P1B4A62) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 35 minutes or more.[*1]
Turn the ignition switch to ON and wait for 10 seconds or more.[*2]
HINT:

[*1] to [*2]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1B4A62" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery ECU assembly connector.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

3.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x5) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x5-3 (TBH0) - x5-4 (GBH0)	Ignition switch off 0 to 10°C (32 to 50°F)	17.7 to 28.3 kΩ
x5-3 (TBH0) - x5-4 (GBH0)	Ignition switch off 10 to 20°C (50 to 68°F)	11.9 to 18.4 kΩ
x5-3 (TBH0) - x5-4 (GBH0)	Ignition switch off 20 to 30°C (68 to 86°F)	8.20 to 12.3 kΩ
x5-3 (TBH0) - x5-4 (GBH0)	Ignition switch off 30 to 40°C (86 to 104°F)	5.72 to 8.40 kΩ
x5-3 (TBH0) - x5-4 (GBH0)	Ignition switch off 40 to 50°C (104 to 122°F)	4.06 to 5.91 kΩ

Procedure2

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x5) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x5-3 (TBH0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x5) Click Connector(x5)

Tester Connection	Switch Condition	Specified Condition
x5-3 (TBH0) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery ECU assembly connector.

(l) Disconnect the SST.

GO TO STEP 6

4.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x5) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x5-5 (TBH1) - x5-6 (GBH1)	Ignition switch off 0 to 10°C (32 to 50°F)	17.7 to 28.3 kΩ
x5-5 (TBH1) - x5-6 (GBH1)	Ignition switch off 10 to 20°C (50 to 68°F)	11.9 to 18.4 kΩ
x5-5 (TBH1) - x5-6 (GBH1)	Ignition switch off 20 to 30°C (68 to 86°F)	8.20 to 12.3 kΩ
x5-5 (TBH1) - x5-6 (GBH1)	Ignition switch off 30 to 40°C (86 to 104°F)	5.72 to 8.40 kΩ
x5-5 (TBH1) - x5-6 (GBH1)	Ignition switch off 40 to 50°C (104 to 122°F)	4.06 to 5.91 kΩ

Procedure2

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x5) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x5-5 (TBH1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure3

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x5) Click Connector(x5)

Tester Connection	Switch Condition	Specified Condition
x5-5 (TBH1) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery ECU assembly connector.

(l) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery heater connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x15,x5) Click Connector(x15) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x15-5 (TBH1) - x5-5 (TBH1)	Ignition switch off	Below 1 Ω
x15-11 (GBH1) - x5-6 (GBH1)	Ignition switch off	Below 1 Ω
x15-5 (TBH1) or x5-5 (TBH1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x15-11 (GBH1) or x5-6 (GBH1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x15,x5) Click Connector(x15) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x15-5 (TBH1) or x5-5 (TBH1) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery heater connector.

(l) Reconnect the battery ECU assembly connector.

(m) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery heater connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x15,x5) Click Connector(x15) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x15-3 (TBH0) - x5-3 (TBH0)	Ignition switch off	Below 1 Ω
x15-10 (GBH0) - x5-4 (GBH0)	Ignition switch off	Below 1 Ω
x15-3 (TBH0) or x5-3 (TBH0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x15-10 (GBH0) or x5-4 (GBH0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x15,x5) Click Connector(x15) Click Connector(x5)

Tester Connection	Condition	Specified Condition
x15-3 (TBH0) or x5-3 (TBH0) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery heater connector.

(l) Reconnect the battery ECU assembly connector.

(m) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Heater Relay Actuator Stuck Open (P1B4B72)

DESCRIPTION

The battery ECU assembly controls the HV battery heater relay.

If the HV battery heater relay does not turn on when the battery ECU assembly is outputting current, the battery ECU assembly will detect a malfunction and store a DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1B4B72

Hybrid/EV Battery Heater Relay Actuator Stuck Open

The temperature of the HV battery does not increase even though the battery ECU assembly is outputting current to turn the HV battery heater relay on.

(1 trip detection logic)

No. 1 traction battery heater
Wire harness or connector
No. 1 traction battery heater relay
Battery ECU assembly
Fuse

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1B4F

MONITOR DESCRIPTION

If the battery ECU assembly detects that the temperature of the HV battery does not increase even though it is applying current to the HV battery heater relay to turn it on, it will detect a malfunction, illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1B4F (INF P1B4B72): Hybrid/EV Battery Heater Relay Control Circuit Stuck Off
Required sensors/components	HV battery heater temperature sensor relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1B4F (INF P1B4B72) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON (READY) and wait for 5 minutes or more.[*1]
HINT:

[*1] to [*2]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1B4B72" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery ECU assembly connectors.

HINT:

Click here

OK:

The connectors are connected securely and there are no contact pressure problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

3.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY HEATER RELAY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the No. 1 traction battery heater relay connector.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Proceed to
OK
NG

Post-procedure1

CONNECT SECURELY

4.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0)

Click here

GO TO STEP 21

5.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1)

Click here

GO TO STEP 20

6.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER RELAY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x14,x4) Click Connector(x14) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x14-11 (BHR) - x4-12 (BHRB)	Ignition switch off	Below 1 Ω
x14-8 (BHRG) - x4-13 (BHRG)	Ignition switch off	Below 1 Ω
x14-11 (BHR) or x4-12 (BHRB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x14-8 (BHRG) or x4-13 (BHRG) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x14,x4) Click Connector(x14) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x14-11 (BHR) or x4-12 (BHRB) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the battery ECU assembly connector.

(l) Reconnect the No. 1 traction battery heater relay connector.

(m) Disconnect the SST.

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK HARNESS AND CONNECTOR (BH0, BH1 VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x14) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x14-1 (BH0) - Body ground	Ignition switch ON	11 to 14 V
x14-6 (BH1) - Body ground	Ignition switch ON	11 to 14 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the No. 1 traction battery heater relay connector.

(j) Disconnect the SST.

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	CHECK RELAY (NO. 1 TRACTION BATTERY HEATER RELAY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery heater relay connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x14) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x14-1 (BH0) - x14-3 (HR0)	Auxiliary battery voltage not applied between terminals x14-11 (BHR) and x14-8 (BHRG)	10 kΩ or higher
x14-1 (BH0) - x14-3 (HR0)	Auxiliary battery voltage applied between terminals x14-11 (BHR) and x14-8 (BHRG)	Below 1 Ω
x14-6 (BH1) - x14-4 (HR1)	Auxiliary battery voltage not applied between terminals x14-11 (BHR) and x14-8 (BHRG)	10 kΩ or higher
x14-6 (BH1) - x14-4 (HR1)	Auxiliary battery voltage applied between terminals x14-11 (BHR) and x14-8 (BHRG)	Below 1 Ω

Result:

Proceed to
OK
NG

*a	Component without harness connected (No. 1 Traction Battery Heater Relay)

Post-procedure1

(d) Reconnect the No. 1 traction battery heater relay connector.

REPLACE NO. 1 TRACTION BATTERY HEATER RELAY

9.	CHECK FUSE (BATT HTR NO. 1)

Pre-procedure1

(a) Remove the BATT HTR NO. 1 fuse from the fuse block assembly.

Procedure1

(b) Measure the resistance of the BATT HTR NO. 1 fuse.

Standard Resistance:

Tester Connection	Condition	Specified Condition
BATT HTR NO. 1	Ignition switch off	Below 1 Ω

Post-procedure1

REPLACE FUSE (BATT HTR NO. 1)

10.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY HEATER RELAY - BATT HTR NO. 1 FUSE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery heater relay connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x14) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x14-1 (BH0) - BATT HTR NO. 1 fuse holder 2	Ignition switch off	Below 1 Ω
x14-1 (BH0) or BATT HTR NO. 1 fuse holder 2 - Body ground and other terminals	Ignition switch off	10 kΩ or higher

NOTICE:

When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the terminal.

Post-procedure1

(e) Install the BATT HTR NO. 1 fuse to the fuse block assembly.

(f) Reconnect the No. 1 traction battery heater relay connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	CHECK HARNESS AND CONNECTOR (BATTERY TERMINAL - BATT HTR NO. 1 FUSE)

Pre-procedure1

(a) Remove the BATT HTR NO. 1 fuse from the fuse block assembly.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
BATT HTR NO. 1 fuse holder 1 - Auxiliary battery positive ( ) cable	Ignition switch off	Below 1 Ω
BATT HTR NO. 1 fuse holder 1 or Auxiliary battery positive ( ) cable - Body ground and other terminals	Ignition switch off	10 kΩ or higher

NOTICE:

When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the terminal.

Post-procedure1

(e) Connect the cable to the positive ( ) auxiliary battery terminal.

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Install the BATT HTR NO. 1 fuse to the fuse block assembly.

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY HEATER RELAY - NO. 1 TRACTION BATTERY HEATER)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery heater connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x15,x14) Click Connector(x15) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x15-1 (HR0) - x14-3 (HR0)	Ignition switch off	Below 1 Ω
x15-1 (HR0) or x14-3 (HR0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x15,x14) Click Connector(x15) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x15-1 (HR0) or x14-3 (HR0) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery heater connector.

(l) Reconnect the No. 1 traction battery heater relay connector.

(m) Disconnect the SST.

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY HEATER - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery heater connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x15) Click Connector(x15)

Tester Connection	Condition	Specified Condition
x15-7 (GND0) - Body ground	Ignition switch off	Below 1 Ω

Post-procedure1

(d) Reconnect the No. 1 traction battery heater connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.	CHECK FUSE (BATT HTR NO. 2)

Pre-procedure1

(a) Remove the BATT HTR NO. 2 fuse from the fuse block assembly.

Procedure1

(b) Measure the resistance of the BATT HTR NO. 2 fuse.

Standard Resistance:

Tester Connection	Condition	Specified Condition
BATT HTR NO. 2 fuse	Ignition switch off	Below 1 Ω

Post-procedure1

REPLACE FUSE (BATT HTR NO. 2)

15.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY HEATER RELAY - BATT HTR NO. 2 FUSE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery heater relay connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x14) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x14-6 (BH1) - BATT HTR NO. 2 fuse holder 2	Ignition switch off	Below 1 Ω
x14-6 (BH1) or BATT HTR NO. 2 fuse holder 2 - Body ground and other terminals	Ignition switch off	10 kΩ or higher

NOTICE:

When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the terminal.

Post-procedure1

(e) Install the BATT HTR NO. 2 fuse to the fuse block assembly.

(f) Reconnect the No. 1 traction battery heater relay connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.	CHECK HARNESS AND CONNECTOR (BATTERY TERMINAL - BATT HTR NO. 2 FUSE)

Pre-procedure1

(a) Remove the BATT HTR NO. 2 fuse from the fuse block assembly.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
BATT HTR NO. 2 fuse holder 1 - Auxiliary battery positive ( ) cable	Ignition switch off	Below 1 Ω
BATT HTR NO. 2 fuse holder 1 or Auxiliary battery positive ( ) cable - Body ground and other terminals	Ignition switch off	10 kΩ or higher

NOTICE:

When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the terminal.

Post-procedure1

(e) Connect the cable to the positive ( ) auxiliary battery terminal.

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Install the BATT HTR NO. 2 fuse to the fuse block assembly.

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY HEATER RELAY - NO. 1 TRACTION BATTERY HEATER)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the No. 1 traction battery heater connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(e) Measure the resistance according to the value(s) in the tables below.

Standard Resistance:

Click Location & Routing(x15,x14) Click Connector(x15) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x15-8 (HR1) - x14-4 (HR1)	Ignition switch off	Below 1 Ω
x15-8 (HR1) or x14-4 (HR1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Pre-procedure2

(f) Connect the cable to the negative (-) auxiliary battery terminal.

(g) Turn the ignition switch to ON.

Procedure2

(h) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x15,x14) Click Connector(x15) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x15-8 (HR1) or x14-4 (HR1) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) auxiliary battery terminal.

(k) Reconnect the No. 1 traction battery heater connector.

(l) Reconnect the No. 1 traction battery heater relay connector.

(m) Disconnect the SST.

REPAIR OR REPLACE HARNESS OR CONNECTOR

18.	CHECK HARNESS AND CONNECTOR (NO. 1 TRACTION BATTERY HEATER - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the No. 1 traction battery heater connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

Standard Resistance:

Click Location & Routing(x15) Click Connector(x15)

Tester Connection	Condition	Specified Condition
x15-12 (GND1) - Body ground	Ignition switch off	Below 1 Ω

Post-procedure1

(d) Reconnect the No. 1 traction battery heater connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

19.	PERFORM ACTIVE TEST USING GTS (HYBRID/EV BATTERY HEATER RELAY)

Pre-procedure1

(a) None

Procedure1

(b) Enter the following menus: Powertrain / HV Battery / Active Test / Hybrid Battery Heater Relay.

Powertrain > HV Battery > Active Test

Active Test Display
Hybrid/EV Battery Heater Relay

Data List Display
Hybrid/EV Battery Heater 1 Temperature
Hybrid/EV Battery Heater 2 Temperature

Result	Proceed to
After performing the Active Test for 5 minutes, the value of both "Hybrid/EV Battery Heater 1 Temperature" and "Hybrid/EV Battery Heater 2 Temperature" increase by 5°C (41°F) or more.	A
After performing the Active Test for 5 minutes, the value of "Hybrid/EV Battery Heater 1 Temperature" does not increase by 5°C (41°F) or more.	B
After performing the Active Test for 5 minutes, the value of "Hybrid/EV Battery Heater 2 Temperature" does not increase by 5°C (41°F) or more.	C
Other than above	D

Post-procedure1

REPLACE BATTERY ECU ASSEMBLY

REPLACE NO. 1 TRACTION BATTERY HEATER

20.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1))

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0))

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Heater Relay Actuator Stuck Closed (P1B4B73)

DESCRIPTION

The battery ECU assembly controls the driving relay for the HV battery heater.

If the HV battery heater relay does not turn off when the battery ECU assembly stops outputting current, the battery ECU assembly will detect a malfunction and store a DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1B4B73

Hybrid/EV Battery Heater Relay Actuator Stuck Closed

The temperature of the HV battery increases even though the battery ECU assembly is not outputting current to turn the traction battery heater relay on.

(1 trip detection logic)

No. 1 traction battery heater
Wire harness or connector
No. 1 traction battery heater relay
Battery ECU assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1B4E

MONITOR DESCRIPTION

If the battery ECU assembly detects that the temperature of the HV battery is increasing even though it is not applying current to the HV battery heater relay, it will detect a malfunction, illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1B4E (INF P1B4B73): Hybrid/EV Battery Heater Relay Control Circuit Stuck On
Required sensors/components	HV battery heater temperature sensor relay
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1B4E (INF P1B4B73) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 30 minutes or more.[*1]
Turn the ignition switch to ON (READY) and wait for 15 minutes or more.[*2]
HINT:

[*1] to [*2]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1B4B72.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK AUXILIARY BATTERY VOLTAGE

Pre-procedure1

(a) Turn the ignition switch off and turn on the high beam headlights for 30 seconds. This will remove the surface charge from the auxiliary battery.

Procedure1

(b) Measure the auxiliary battery voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
Positive ( ) auxiliary battery terminal - Negative (-) auxiliary battery terminal	20°C (68°F), Ignition switch off	11.0 V or higher

Post-procedure1

GO TO STEP 11

2.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1B4B73" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY)

Click here

CONNECT SECURELY

4.	CHECK CONNECTOR CONNECTION CONDITION (NO. 1 TRACTION BATTERY HEATER RELAY)

Click here

CONNECT SECURELY

5.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER RELAY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x14) Click Connector(x14)

Tester Connection	Condition	Specified Condition
x14-11 (BHR) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Result:

Proceed to
OK
NG

*a	Component with harness connected (to No. 1 Traction Battery Heater Relay)

Post-procedure1

(f) Turn the ignition switch off.

(g) Disconnect the cable from the negative (-) auxiliary battery terminal.

(h) Disconnect the SST.

GO TO STEP 10

6.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0)

Click here

GO TO STEP 9

7.	CHECK NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1)

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER RELAY

8.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 1))

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER (HV BATTERY HEATER TEMPERATURE SENSOR 0))

Click here

REPLACE NO. 1 TRACTION BATTERY HEATER

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY HEATER RELAY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(e) Connect the cable to the negative (-) auxiliary battery terminal.

(f) Turn the ignition switch to ON.

Procedure1

(g) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition	Specified Condition
X14-11 (BHR) or x4-12 (BHRB) - Body ground	Ignition switch ON	Below 1 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(h) Turn the ignition switch off.

(i) Disconnect the cable from the negative (-) auxiliary battery terminal.

(j) Reconnect the battery ECU assembly connector.

(k) Reconnect the No. 1 traction battery heater relay connector.

(l) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	CHARGE OR REPLACE AUXILIARY BATTERY

(a) Charge or replace the auxiliary battery.

GO TO STEP 2

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery (P1B8312,P1B8314)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1B8312

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery

The air conditioning pressure sensor output voltage is excessively high.

(1 trip detection logic)

Air conditioning pressure sensor (No. 2 traction battery cooler tube)
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1B86

P1B8314

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Low Circuit Short to Ground or Open

The air conditioning pressure sensor output voltage is excessively low.

(1 trip detection logic)

Air conditioning pressure sensor (No. 2 traction battery cooler tube)
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1B85

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a air conditioning pressure sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P1B86 (INF P1B8312): Hybrid Battery Pack Coolant Pressure Sensor (Battery Refrigerant) Range check (High voltage) P1B85 (INF P1B8314): Hybrid Battery Pack Coolant Pressure Sensor (Battery Refrigerant) Range check (Low voltage)
Required sensors/components	Air conditioning pressure sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1B86 (INF P1B8312) is not detected

DTC P1B85 (INF P1B8314) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	COMPARE REFRIGERANT GAS PRESSURE VALUES SHOWN ON GTS AND MANIFOLD GAUGE SET

HINT:

This check is meant to compare the refrigerant gas pressures on the GTS and on the air conditioning tool when the air conditioning is stopped, so do not operate the compressor.

Pre-procedure1

(a) Turn the blower switch off.

(b) Turn the ignition switch off and wait for 1 hour or more.

Procedure1

(d) Read the Data List according to the display on the GTS.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Refrigerant Pressure 1

Result	Proceed to
The Data List value matches the value on the manifold gauge set	A
The Data List value does not match the value on the manifold gauge set	B

Post-procedure1

(e) Compare the values displayed in the Data List and on the manifold gauge set.

GO TO STEP 5

2.	REFRIGERANT SHORTAGE CHECK USING GTS

HINT:

Click here

GO TO STEP 5

3.	CHARGE REFRIGERANT GAS OR REPAIR REFRIGERANT GAS LEAK

HINT:

Click here

4.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
P1B8312 or P1B8314 is output	A
P1B8312 or P1B8314 is not output	B

Post-procedure1

GO TO STEP 5

END

5.	CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR POWER SOURCE CIRCUIT)

NOTICE:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

Procedure1

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x7) Click Connector(x7)

Tester Connection	Condition	Specified Condition	Result
x7-3 (VC) - x7-1 (GND)	Ignition switch ON	4.75 to 5.25 V	V
x7-2 (VOUT) - x7-1 (GND)	Ignition switch ON	4.75 to 5.25 V	V
x7-3 (VC) - body ground	Ignition switch ON	4.75 to 5.25 V	V
x7-2 (VOUT) - body ground	Ignition switch ON	4.75 to 5.25 V	V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

Post-procedure1

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the air conditioning pressure sensor (No. 2 traction battery cooler tube) connector.

(j) Disconnect the SST.

REPLACE AIR CONDITIONING PRESSURE SENSOR (NO. 2 TRACTION BATTERY COOLER TUBE)

6.	CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR (NO. 2 TRACTION BATTERY COOLER TUBE) - BATTERY ECU ASSEMBLY)

NOTICE:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x7,x4) Click Connector(x7) Click Connector(x4)

Tester Connection	Condition	Specified Condition	Result
x7-3 (VC) - x4-5 (VAS0)	Ignition switch off	Below 1 Ω	Ω
x7-2 (VOUT) - x4-19 (AS0)	Ignition switch off	Below 1 Ω	Ω
x7-1 (GND) - x4-18 (GAS0)	Ignition switch off	Below 1 Ω	Ω
x7-3 (VC) or x4-5 (VAS0) - Other terminals and body ground	Ignition switch off	10 kΩ or higher	kΩ
x7-2 (VOUT) or x4-19 (AS0) - Other terminals and body ground	Ignition switch off	10 kΩ or higher	kΩ
x7-1 (GND) or x4-18 (GAS0) - Other terminals and body ground	Ignition switch off	10 kΩ or higher	kΩ

Post-procedure1

(e) Reconnect the battery ECU assembly connector.

(f) Reconnect the air conditioning pressure sensor connector.

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range (P1B831C)

DTC SUMMARY

MALFUNCTION DESCRIPTION

Determines that there is a deviation in characteristics for the HV battery outlet pressure sensor installed in the HV battery refrigerant cooling system to prevent the HV battery temperature from rising excessively.

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1B831C

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range

While HV battery refrigerant is cooling, the difference between the values of the HV battery refrigerant inlet temperature converted to pressure and the HV battery refrigerant pressure sensor is the specified value or higher

(2 trip detection logic)

Air conditioning pressure sensor (No. 2 traction battery cooler tube)
No. 1 traction battery cooler tube (duct inlet 1)
No. 1 traction battery cooler conductor (duct outlet 1)
Battery ECU assembly
Wire harness or connector
A/C cooler pipe
HV battery cooler pipe

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P1B84

MONITOR DESCRIPTION

While battery refrigerant is cooling, if the difference between the values of the battery refrigerant inlet temperature converted to pressure and the battery refrigerant pressure sensor is the specified value or higher, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P1B84 (INF P1B831C): Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance
Required sensors/components	Air conditioning pressure sensor, Air Conditioning Thermistor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	2 driving cycles
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P1B84 (INF P1B831C) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Enter the following menus: Powertrain / HV Battery / Active Test / Hybrid/EV Battery Refrigerant Cooling Control.
Perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test for 14 minutes.[*1]
HINT:
- In order to perform "Hybrid/EV Battery Refrigerant Cooling Control", the HV battery minimum temperature must be 11°C (52°F) and the refrigerant temperature inside the HV battery must be 0°C (32°F) or higher.
  If the above conditions are not established, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the HV battery temperature.
  
  In consideration of the temperature drop after the heater stops, increase the value of Data List item "Hybrid/EV Battery Temperature 1 to 15" to a minimum of 12°C (54°F) or more, and the value of Data List item "Hybrid/EV Battery Refrigerant Temperature (Duct Inlet 1)" and "Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1)" to 1°C (34°F) or more.
  
  (At an ambient temperature of 5°C (41°F), "Hybrid/EV Battery Heater Relay" will need to be performed for approximately 5 hours.)
- Perform this step with the A/C blower switch off.
- [*1]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1B8312.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL, AIR CONDITIONER)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes Body Electrical > Air Conditioner > Trouble Codes

Result	Proceed to
"P1B831C" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C
DTCs of air conditioning system in the table below are output.	D

Malfunction Content	System	Relevant DTC
Air conditioner malfunction	Air conditioning system	B138571	A/C Cooling Electric Expansion Valve Actuator Stuck
		B149887	A/C Inverter Local Missing Message
		B3A0A71	A/C Heating Electric Expansion Valve Actuator Stuck
		P0EC971	A/C Low Pressure Magnetic Valve Actuator Stuck
		P2D4496	A/C Compressor Component Internal Failure
Microcomputer malfunction	Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
		P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
		P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation
Sensor and actuator circuit malfunction	Hybrid battery system	P0CDF73	Hybrid/EV Battery Pack Coolant Control Valve "A" Stuck On Actuator Stuck Closed
		P0D1A71	Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck
		P0DE871	Hybrid/EV Battery Pack Coolant Control Valve "C" Performance/Stuck Off Actuator Stuck

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

GO TO DTC CHART (AIR CONDITIONING SYSTEM)

2.	REFRIGERANT SHORTAGE CHECK USING GTS

HINT:

Click here

GO TO STEP 5

3.	CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR POWER SOURCE CIRCUIT)

Click here

REPLACE AIR CONDITIONING PRESSURE SENSOR (NO. 2 TRACTION BATTERY COOLER TUBE)

4.	CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR (NO. 2 TRACTION BATTERY COOLER TUBE) - BATTERY ECU ASSEMBLY)

Click here

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	INSPECT FOR REFRIGERANT LEAK (AIR CONDITIONING SYSTEM)

Click here

GO TO PROBLEM SYMPTOMS TABLE (AIR CONDITIONING SYSTEM)

6.	INSPECT FOR REFRIGERANT LEAK (INLET SIDE OF HV SUPPLY BATTERY ASSEMBLY)

Click here

CHECK AND REPLACE REFRIGERANT LEAK (HV SUPPLY BATTERY ASSEMBLY)

GO TO PROBLEM SYMPTOMS TABLE (AIR CONDITIONING SYSTEM)

High Voltage Power Resource Internal Electronic Failure (P1C8549)

DESCRIPTION

The battery ECU assembly monitors an internal operation of the hybrid vehicle control ECU. If it detects the following malfunction, it will store this DTC and perform fail-safe control.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1C8549

High Voltage Power Resource Internal Electronic Failure

An abnormal signal is detected by the battery ECU assembly (excessive discharging current).

(1 trip detection logic)

Hybrid Toyota Prius vehicle control ECU

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P3004

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Accelerator Position", "Hybrid/EV Battery Current" and "Hybrid/EV Battery Temperature 1 to 15".
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1C8549" only is output.	A
DTCs except "P1C8549" of hybrid battery system are output.	B
DTCs except "P1C8549" of hybrid control system are output.	C

Post-procedure1

REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

Hybrid/EV Battery Stack 1 Voltage Difference Out of Range (P1CC81E,P1CC91E,P1CCA1E)

DESCRIPTION

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors difference in voltage of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P1CC81E

Hybrid/EV Battery Stack 1 Voltage Difference Out of Range

The difference in voltage of each cell of the No. 1 HV supply stack sub-assembly exceeds the specified value.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Service plug grip
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P33DA

P1CC91E

Hybrid/EV Battery Stack 2 Voltage Difference Out of Range

The difference in voltage of each cell of the No. 2 HV supply stack sub-assembly exceeds the specified value.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Service plug grip
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P33DB

P1CCA1E

Hybrid/EV Battery Stack 3 Voltage Difference Out of Range

The difference in voltage of each cell of the No. 3 HV supply stack sub-assembly exceeds the specified value.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Service plug grip
Battery voltage sensor

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P33DC

MONITOR DESCRIPTION

If the difference in voltage between each HV battery cell exceeds the specified value, the battery ECU assembly determines that a malfunction has occurred. When the malfunction detection condition is satisfied, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P33DA (INF P1CC81E), P33DB (INF P1CC91E), P33DC (INF P1CCA1E): Battery cell malfunction
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P33DA (INF P1CC81E) is not detected

DTC P33DB (INF P1CC91E) is not detected

DTC P33DC (INF P1CCA1E) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 1 hour or more.[*1]
Turn the ignition switch to ON and wait for 10 seconds or more.[*2]
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*3]
HINT:
- [*1] to [*3]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- This DTC may not be stored if the vehicle is stopped or being driven at a constant speed.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1A001C.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P1CC81E, P1CC91E or P1CCA1E" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P1AC413	Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open
	P1AC513	Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open
	P1AC613	Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open
	P1AC713	Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open
	P1AC49E	Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On
	P1AC59E	Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On
	P1AC69E	Hybrid/EV Battery Stack 3 Current Interrupt Device Stuck On
	P1AC79E	Hybrid/EV Battery Stack 4 Current Interrupt Device Stuck On
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P1CC81E" is also output.	A
"P1CC91E" is also output.	B
"P1CCA1E" is also output.	C

GO TO STEP 14

GO TO STEP 25

3.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Connector is not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

4.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 24 Voltage" for DTC P1CC81E and make a note if the value of any is the lowest voltage value.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

5.	CHECK BATTERY VOLTAGE SENSOR (VA1 - VA24)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

6.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

GO TO STEP 10

7.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

8.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.

(e) Turn the ignition switch off.

9.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1CC81E" is output.	A
"P1CC81E" is not output.	B

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

END

10.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

11.	REPLACE SERVICE PLUG GRIP

HINT:

Click here

12.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.

(e) Turn the ignition switch off.

13.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1CC81E" is output.	A
"P1CC81E" is not output.	B

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

END

14.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

15.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 25 Voltage" through "Hybrid/EV Battery Cell 48 Voltage" for DTC P1CC91E and make a note if the value of any is the lowest voltage value.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

16.	CHECK BATTERY VOLTAGE SENSOR (VA25 - VA48)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

17.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

GO TO STEP 21

18.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

19.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.

(e) Turn the ignition switch off.

20.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1CC91E" is output.	A
"P1CC91E" is not output.	B

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

END

21.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

22.	REPLACE SERVICE PLUG GRIP

HINT:

Click here

23.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.

(e) Turn the ignition switch off.

24.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1CC91E" is output.	A
"P1CC91E" is not output.	B

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

END

25.	CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

Procedure1

(b) Check the connections of the battery voltage sensor connectors.

HINT:

Click here

OK:

The connector is connected securely and there are no contact problems.

Result:

Result		Proceed to
OK		A
Not connected securely	The terminals are not damaged or corroded	B
Not connected securely	The terminals are damaged or corroded	C

Post-procedure1

CONNECT SECURELY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

26.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the value of freeze frame data items "Hybrid/EV Battery Cell 49 Voltage" through "Hybrid/EV Battery Cell 72 Voltage" for DTC P1CCA1E and make a note if the value of any is the lowest voltage value.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

27.	CHECK BATTERY VOLTAGE SENSOR (VA49 - VA72)

Click here

Result	Proceed to
The resistance between the terminals is 50 kΩ or more.	A
Other than above	B

REPLACE BATTERY VOLTAGE SENSOR

28.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

GO TO STEP 32

29.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

30.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.

(e) Turn the ignition switch off.

31.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1CCA1E" is output.	A
"P1CCA1E" is not output.	B

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

END

32.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

33.	REPLACE SERVICE PLUG GRIP

HINT:

Click here

34.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.

(e) Turn the ignition switch off.

35.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check if DTCs are output.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
"P1CCA1E" is output.	A
"P1CCA1E" is not output.	B

Post-procedure1

REPLACE BATTERY VOLTAGE SENSOR

END

Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range (P2BE41C)

DESCRIPTION

Refer to the description for DTC P0ABF11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P2BE41C

Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range

A battery current sensor is malfunctioning.*1

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P2BE5

*1: The difference in output of the main and low battery current sensors is large.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in the battery current sensor, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P2BE5 (INF P2BE41C): Hybrid/EV Battery Pack Current sensor malfunction (offset)
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P2BE5 (INF P2BE41C) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for P0ABF11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P2BE41C" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the tables below.

Standard Resistance (Check for Open):

Click Location & Routing(x11,x4) Click Connector(x11) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x11-1 (IBL) - x4-15 (IBL)	Ignition switch off	Below 1 Ω
x11-5 (IB1) - x4-17 (IB1)	Ignition switch off	Below 1 Ω
x11-4 (GIB) - x4-14 (GIB)	Ignition switch off	Below 1 Ω
x11-3 (IB0) - x4-16 (IB0)	Ignition switch off	Below 1 Ω
x11-2 (VIB) - x4-4 (VIB)	Ignition switch off	Below 1 Ω

Standard Resistance (Check for Short):

Click Location & Routing(x11,x4) Click Connector(x11) Click Connector(x4)

Tester Connection	Condition	Specified Condition
x11-1 (IBL) or x4-15 (IBL) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-5 (IB1) or x4-17 (IB1) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-4 (GIB) or x4-14 (GIB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-3 (IB0) or x4-16 (IB0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
x11-2 (VIB) or x4-4 (VIB) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

Post-procedure1

(e) Reconnect the battery current sensor connector to the No. 1 traction battery device box assembly.

(f) Reconnect the battery ECU assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

HINT:

Click here

4.	CLEAR DTC (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

5.	CHECK DTC OUTPUT (HV BATTERY)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
DTCs are not output.	A
P2BE41C is also output.	B

END

REPLACE BATTERY ECU ASSEMBLY

Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure (P2BE428)

DESCRIPTION

Refer to the description for DTC P0ABF11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P2BE428

Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure

The offset value of the battery current sensor is excessively large.

(1 trip detection logic)

No. 1 traction battery device box assembly
Battery ECU assembly
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P2BE5

When the ignition switch is ON, normally the HV battery current does not flow. If the HV battery current value is above the specification, this DTC will be stored.

HINT:

Make sure to perform Current Sensor Offset Learning after replacing a battery current sensor.
Click here
This DTC may be output if Current Sensor Offset Learning has not been completed.

MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in the battery current sensor, the battery ECU assembly illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P2BE5 (INF P2BE428): Hybrid/EV Battery Pack Current sensor malfunction (gain)
Required sensors/components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P2BE5 (INF P2BE428) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
Turn the ignition switch off and wait for 2 minutes or more.[*2]
Turn the ignition switch to ON and wait for 10 seconds or more.[*3]
HINT:

[*1] to [*3]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0ABF11.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P2BE428" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P062F46	Hybrid/EV Battery Energy Control Module EEPROM Calibration / Parameter Memory Failure
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY)

Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (BATTERY CURRENT SENSOR (IBL))

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

(d) Turn the ignition switch to ON.

Procedure1

(e) Using a Toyota electrical tester set to 40 V, measure the VIB voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-4 (VIB) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Be sure to set the Toyota electrical tester to 40 V when performing this test.

*a	Component with harness connected (Battery ECU Assembly)

Procedure2

(f) Using a Toyota electrical tester set to 4 V, measure the IBL voltage according to the value(s) in the table below.

Click Location & Routing(x4) Click Connector(x4)

Tester Connection	Condition
x4-15 (IBL) - x4-14 (GIB)	Ignition switch ON

NOTICE:

Be sure to set the Toyota electrical tester to 4 V when performing this test.

*a	Component with harness connected (Battery ECU Assembly)

Procedure3

(g) Compare the measured values of the IBL terminal voltage and VIB terminal voltage using the following formula:

Condition
IBL voltage - 0.5 X VIB voltage = less than 0.05 V
IBL voltage - 0.5 X VIB voltage = -0.05 V or higher

Result	Proceed to
Within the specified range above	A
Other than above	B

Post-procedure1

(h) Turn the ignition switch off.

(i) Disconnect the cable from the negative (-) auxiliary battery terminal.

(j) Disconnect the SST.

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

4.	REPLACE BATTERY ECU ASSEMBLY

HINT:

Click here

5.	SIMULATION TEST

Pre-procedure1

(a) None

Procedure1

(b) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

Post-procedure1

(d) Turn the ignition switch off and wait for 2 minutes or more.

(e) Turn the ignition switch to ON and wait for 10 seconds or more.

6.	CHECK DTC OUTPUT (HV BATTERY)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
DTCs are not output.	A
P2BE428 is also output.	B

END

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

Hybrid/EV Battery Discharge Control Malfunction (P300000)

DESCRIPTION

The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals. If the SOC drops due to running out of fuel, the vehicle being left with neutral (N) selected for a long time or a hybrid control system malfunction, this DTC will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P300000

Hybrid/EV Battery Discharge Control Malfunction

Discharging of the HV battery continues even after discharging is prohibited when the "SOC" has reached the lower limit.

(1 trip detection logic)

SFI system
Fuel level
HV battery state of charge

Does not come on

Master Warning:

Does not come on

HV Battery

SAE Code:

P3000

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON (READY) with park (P) selected and make the "Hybrid/EV Battery SOC" to decrease. Check that the engine is started to charge the HV battery, and the value of Data List item "Hybrid/EV Battery SOC" increases and then remains within an appropriate range.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

CAUTION / NOTICE / HINT

HINT:

If the Toyota Prius vehicle is left with neutral (N) selected (parked or stopped) for a long time, the battery cannot be charged. In this case, the SOC may drop below the lower limit and DTC P300000 may be stored. (This is not a system malfunction.)
When the engine cannot be started, DTC P300000 may be stored because the HV battery cannot be charged.
Repeatedly performing engine start checks may cause the SOC of the HV battery to drop, resulting in DTC P300000 being stored. In this case, charge the HV battery using plug-in charging.
Cranking the engine once causes the SOC to drop approximately 0.5%.
When plug-in charging the Toyota Prius vehicle for 10 minutes using AC 100 V, the SOC of connecting pack will increase by approximately 3.5 %. If AC 200 V is used, the SOC will increase by approximately 7 %.
If the engine cannot be started after performing repairs, clear the DTCs and then charge the HV battery using plug-in charging.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P300000 or P300016" only is output.	A
DTCs except "P300000 or P300016" of hybrid battery system are output.	B
DTCs except "P300000 or P300016" of hybrid control system are output.	C

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK DTC OUTPUT (ENGINE)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Post-procedure1

GO TO DTC CHART (SFI SYSTEM)

3.	CHECK AMOUNT OF FUEL

Pre-procedure1

(a) Turn the ignition switch to ON.

Procedure1

(b) Check the amount of fuel by referring to the fuel gauge in the meter.

HINT:

Add fuel until the low fuel level warning light turns off.

Post-procedure1

There is no fuel in the tank.

REFUEL Toyota Prius Vehicle

Proper amount of fuel is in the tank.

4.	CHECK FREEZE FRAME DATA

Pre-procedure1

(a) None

Procedure1

(b) Read the freeze frame data item "Shift Position" of DTC P300000.

Powertrain > Hybrid Control > Trouble Codes Powertrain > Hybrid Control

Tester Display
Shift Position

NOTICE:

When the freeze frame data "Shift Position" was N, DTC P300000 may be stored due to the Toyota Prius vehicle was left with neutral (N) selected and the HV battery could not be charged.
If DTC "P300000" only is output, charge the HV battery without replacing the HV battery

Post-procedure1

5.	CHECK ENGINE START

Pre-procedure1

(a) Turn the ignition switch to ON (READY).

Procedure1

(b) Check if the engine starts.

HINT:

Depressing the accelerator pedal with park (P) selected will cause the engine to start.
Turning the ignition switch to ON (READY) and off repeatedly while the SOC of the HV battery is low may cause the SOC to drop further and DTC P300016 to be stored. Charge the HV battery using plug-in charging as necessary.
Cranking the engine once causes the SOC to drop approximately 0.5 %.
When plug-in charging the Toyota Prius vehicle for 10 minutes using AC 100 V, the SOC of connecting pack will increase by approximately 3.5 %. If AC 200 V is used, the SOC will increase by approximately 7 %.

Post-procedure1

The engine starts.

LEAVE Toyota Prius Vehicle WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

The engine does not start.

6.	CLEAR DTC (HV BATTERY)

Click here

CHARGE HV BATTERY

(a) Charge the HV battery, then check that engine starts.

Hybrid/EV Battery Control System Circuit Voltage Below Threshold (P300016)

DESCRIPTION

The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals.

If the HV battery is discharged excessively or the hybrid battery system is malfunctioning, this DTC will be stored.

HINT:

If the HV battery voltage has dropped due to a malfunction in other components, such as the inverter with converter assembly or the hybrid Toyota Prius vehicle transaxle assembly, recharging the HV battery will be able to restore the voltage. If the HV battery voltage has dropped excessively after the vehicle was left for a long time, the HV battery will need to be replaced.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P300016

Hybrid/EV Battery Control System Circuit Voltage Below Threshold

A malfunction signal is received from the battery ECU assembly.

The voltage of any HV battery cell has decreased excessively.

(1 trip detection logic)

SFI system
Engine
Hybrid Toyota Prius vehicle transaxle assembly
HV battery

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P3000

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON (READY) with park (P) selected.
Wait until the engine starts and then stops.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

CAUTION / NOTICE / HINT

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

HINT:

Thoroughly interview the customer as DTC P300016 may be stored if the SOC drops due to the Toyota Prius vehicle being left with neutral (N) selected for a long time or running out of fuel.
When the engine cannot be started, DTC P300016 may be stored because the HV battery cannot be charged.
If differences among SOCs of HV battery exceed the specifications, the hybrid system warning light may illuminate when "Battery Diagnosis" is complete. In this case, check for hybrid system related DTCs. If DTC P300016 is output, leave the Toyota Prius vehicle with the ignition switch ON (READY) for 10 minutes or more allowing the vehicle to charge the HV battery. Then clear the DTCs.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P300000 or P300016" only is output.	A
DTCs except "P300000 or P300016" of hybrid battery system are output.	B
DTCs except "P300000 or P300016" of hybrid control system are output.	C

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK DTC OUTPUT (ENGINE)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Post-procedure1

GO TO DTC CHART (SFI SYSTEM)

3.	CHECK ENGINE START

Pre-procedure1

(a) Turn the ignition switch to ON (READY).

Procedure1

(b) Check if the engine starts.

NOTICE:

Do not turn the ignition switch to ON (READY) repeatedly after duplicating the problem symptom indicated by DTC P300016 and clearing the DTCs. This may cause another problem to occur.

HINT:

Depressing the accelerator pedal with park (P) selected will cause the engine to start.

Post-procedure1

The engine starts.

LEAVE Toyota Prius Vehicle WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

The engine does not start.

4.	CHECK CRANKSHAFT PULLEY REVOLUTION (P POSITION)

Pre-procedure1

(a) Push the P position switch (parking switch) to select park (P).

(b) Lift up the Toyota Prius vehicle.

Procedure1

CAUTION:

Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition switch off before performing this inspection, to prevent the engine from starting.

NOTICE:

Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good Toyota Prius vehicle of the same type.

Post-procedure1

(d) Lower the vehicle.

The crankshaft does not rotate smoothly.

GO TO STEP 7

The crankshaft rotates smoothly.

5.	CHARGE OR REPLACE AUXILIARY BATTERY

6.	CHARGE HV BATTERY

HINT:

As the HV battery is not malfunctioning, it is not necessary to replace it. Perform plug-in charging to recover the SOC of the HV battery.

Pre-procedure1

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 60 seconds or more.

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

Procedure1

(d) Plug-in charge the Toyota Prius vehicle using the electric vehicle charger cable assembly.

Post-procedure1

(e) None

END

7.	CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION)

Pre-procedure1

(a) Turn the ignition switch to ON.

(b) Move the shift lever to N.

Procedure1

(d) Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.

CAUTION:

Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition switch to ON before performing this inspection, to prevent the engine from starting.

NOTICE:

Post-procedure1

(e) Lower the vehicle.

(f) Turn the ignition switch off.

The crankshaft does not rotate smoothly.

GO TO STEP 12

The crankshaft rotates smoothly.

8.	REPLACE HYBRID Toyota Prius Vehicle TRANSAXLE ASSEMBLY

HINT:

Click here

9.	CHECK ENGINE START

Pre-procedure1

(a) Turn the ignition switch to ON (READY).

Procedure1

(b) Check if the engine starts.

NOTICE:

Do not turn the ignition switch to ON (READY) repeatedly after duplicating the problem symptom indicated by DTC P300016 and clearing the DTCs. This may cause another problem to occur.

HINT:

Depressing the accelerator pedal with park (P) selected will cause the engine to start.

Post-procedure1

The engine starts.

LEAVE Toyota Prius Vehicle WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

The engine does not start.

10.	CHARGE OR REPLACE AUXILIARY BATTERY

11.	CHARGE HV BATTERY

HINT:

As the HV battery is not malfunctioning, it is not necessary to replace it. Perform plug-in charging to recover the SOC of the HV battery.

Pre-procedure1

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 60 seconds or more.

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

Procedure1

(d) Plug-in charge the Toyota Prius vehicle using the electric vehicle charger cable assembly.

Post-procedure1

(e) None

END

12.	REPAIR OR REPLACE ENGINE

13.	CHECK ENGINE START

Pre-procedure1

(a) Turn the ignition switch to ON (READY).

Procedure1

(b) Check if the engine starts.

NOTICE:

Do not turn the ignition switch to ON (READY) repeatedly after duplicating the problem symptom indicated by DTC P300016 and clearing the DTCs. This may cause another problem to occur.

HINT:

Depressing the accelerator pedal with park (P) selected will cause the engine to start.

Post-procedure1

The engine starts.

LEAVE Toyota Prius Vehicle WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS

The engine does not start.

14.	CHARGE OR REPLACE AUXILIARY BATTERY

15.	CHARGE HV BATTERY

HINT:

As the HV battery is not malfunctioning, it is not necessary to replace it. Perform plug-in charging to recover the SOC of the HV battery.

Pre-procedure1

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 60 seconds or more.

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

Procedure1

(d) Plug-in charge the Toyota Prius vehicle using the electric vehicle charger cable assembly.

Post-procedure1

(e) None

END

Hybrid/EV Battery Control System Over Temperature (P30004B)

DESCRIPTION

The battery ECU assembly monitors the temperature of the HV battery to detect if it becomes excessively high.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P30004B

Hybrid/EV Battery Control System Over Temperature

The battery ECU assembly detects a HV battery cooling system error signal.

(1 trip detection logic)

Hybrid Toyota Prius vehicle control ECU
No. 1 HV supply stack sub-assembly
No. 2 HV supply stack sub-assembly
No. 3 HV supply stack sub-assembly

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P3000

HINT:

The normal HV battery temperature is 60°C (140°F) or less.

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Hybrid/EV Battery Temperature 1 to 15", "Ambient Temperature" and "Hybrid/EV Battery Current".
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	INSPECT HV SUPPLY BATTERY ASSEMBLY

HINT:

Click here

2.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P30004B" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P0A9B11	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground
	P0A9B15	Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open
	P0A9B1C	Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range
	P0A9B2A	Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range
	P0AAC11	Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Ground
	P0AAC15	Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open
	P0AB111	Hybrid/EV Battery Air Temperature Sensor "B" Circuit Short to Ground
	P0AB115	Hybrid/EV Battery Air Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open
	P0AC511	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground
	P0AC515	Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open
	P0AC51C	Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range
	P0AC52A	Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range
	P0ACA11	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground
	P0ACA15	Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open
	P0ACA1C	Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range
	P0ACA2A	Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range
	P0AE811	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground
	P0AE815	Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open
	P0AE81C	Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range
	P0AE82A	Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range
	P0BC211	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground
	P0BC215	Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open
	P0BC21C	Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range
	P0BC22A	Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range
	P0C3311	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground
	P0C3315	Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open
	P0C331C	Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range
	P0C332A	Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range
	P0C7C11	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Ground
	P0C7C15	Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Auxiliary Battery or Open
	P0C7C1C	Hybrid/EV Battery Temperature Sensor "G" Voltage Out of Range
	P0C7C2A	Hybrid/EV Battery Temperature Sensor "G" Signal Stuck In Range
	P0C8111	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Ground
	P0C8115	Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Auxiliary Battery or Open
	P0C811C	Hybrid/EV Battery Temperature Sensor "H" Voltage Out of Range
	P0C812A	Hybrid/EV Battery Temperature Sensor "H" Signal Stuck In Range
	P0C8811	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Ground
	P0C8815	Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Auxiliary Battery or Open
	P0C881C	Hybrid/EV Battery Temperature Sensor "I" Voltage Out of Range
	P0C882A	Hybrid/EV Battery Temperature Sensor "I" Signal Stuck In Range
Hybrid battery system	P0C8D11	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Ground
	P0C8D15	Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Auxiliary Battery or Open
	P0C8D1C	Hybrid/EV Battery Temperature Sensor "J" Voltage Out of Range
	P0C8D2A	Hybrid/EV Battery Temperature Sensor "J" Signal Stuck In Range
	P0C9211	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Ground
	P0C9215	Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Auxiliary Battery or Open
	P0C921C	Hybrid/EV Battery Temperature Sensor "K" Voltage Out of Range
	P0C922A	Hybrid/EV Battery Temperature Sensor "K" Signal Stuck In Range
	P0C9711	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Ground
	P0C9715	Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Auxiliary Battery or Open
	P0C971C	Hybrid/EV Battery Temperature Sensor "L" Voltage Out of Range
	P0C972A	Hybrid/EV Battery Temperature Sensor "L" Signal Stuck In Range
	P0CA811	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Ground
	P0CA815	Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Auxiliary Battery or Open
	P0CA81C	Hybrid/EV Battery Temperature Sensor "M" Voltage Out of Range
	P0CA82A	Hybrid/EV Battery Temperature Sensor "M" Signal Stuck In Range
	P0CAD11	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Ground
	P0CAD15	Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Auxiliary Battery or Open
	P0CAD1C	Hybrid/EV Battery Temperature Sensor "N" Voltage Out of Range
	P0CAD2A	Hybrid/EV Battery Temperature Sensor "N" Signal Stuck In Range
	P0CB211	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Ground
	P0CB215	Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Auxiliary Battery or Open
	P0CB21C	Hybrid/EV Battery Temperature Sensor "O" Voltage Out of Range
	P0CB22A	Hybrid/EV Battery Temperature Sensor "O" Signal Stuck In Range
	P0CB711	Hybrid/EV Battery Temperature Sensor "P" Circuit Short to Ground
	P0CB715	Hybrid/EV Battery Temperature Sensor "P" Circuit Short to Auxiliary Battery or Open
	P0CB71C	Hybrid/EV Battery Temperature Sensor "P" Circuit Voltage Out of Range
	P0CB72A	Hybrid/EV Battery Temperature Sensor "P" Signal Stuck In Range
	P1B5B11	Hybrid/EV Battery Temperature Sensor "Q" Circuit Short to Ground
	P1B5B15	Hybrid/EV Battery Temperature Sensor "Q" Circuit Short to Auxiliary Battery or Open
	P1B5B1C	Hybrid/EV Battery Temperature Sensor "Q" Circuit Voltage Out of Range
	P1B5B2A	Hybrid/EV Battery Temperature Sensor "Q" Signal Stuck In Range
	P1B6011	Hybrid/EV Battery Temperature Sensor "R" Circuit Short to Ground
	P1B6015	Hybrid/EV Battery Temperature Sensor "R" Circuit Short to Auxiliary Battery or Open
	P1B601C	Hybrid/EV Battery Temperature Sensor "R" Circuit Voltage Out of Range
	P1B602A	Hybrid/EV Battery Temperature Sensor "R" Signal Stuck In Range
	P1B6511	Hybrid/EV Battery Temperature Sensor "S" Circuit Short to Ground
	P1B6515	Hybrid/EV Battery Temperature Sensor "S" Circuit Short to Auxiliary Battery or Open
	P1B651C	Hybrid/EV Battery Temperature Sensor "S" Circuit Voltage Out of Range
	P1B652A	Hybrid/EV Battery Temperature Sensor "S" Signal Stuck In Range
	P1B6A11	Hybrid/EV Battery Temperature Sensor "T" Circuit Short to Ground
	P1B6A15	Hybrid/EV Battery Temperature Sensor "T" Circuit Short to Auxiliary Battery or Open
	P1B6A1C	Hybrid/EV Battery Temperature Sensor "T" Circuit Voltage Out of Range
	P1B6A2A	Hybrid/EV Battery Temperature Sensor "T" Signal Stuck In Range
	P306562	Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure
	P306A62	Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure
	P306B62	Hybrid/EV Battery Temperature Sensor "Group 3" Signal Compare Failure
	P306F62	Hybrid/EV Battery Temperature Sensor "Group 4" Signal Compare Failure
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

3.	REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

HINT:

Click here

REPLACE HV SUPPLY STACK SUB-ASSEMBLY (NO. 1 THROUGH NO. 3)

Hybrid/EV Battery Voltage High (P31B300)

DESCRIPTION

If the voltage of any HV battery cell exceeds the threshold, charging will be prohibited. If charging cannot be prohibited due to an HV battery control system malfunction, this DTC will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P31B300

Hybrid/EV Battery Voltage High

Charging cannot be prohibited when the voltage of any HV battery cell has exceeded the specified threshold.

(1 trip detection logic)

Hybrid Toyota Prius vehicle control ECU
No. 1 traction battery device box assembly

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P31B3

MONITOR DESCRIPTION

If the maximum voltage of any HV battery cell exceeds the threshold but charging continues to be performed, the battery ECU assembly will determine that there is a malfunction, illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs	P31B3 (INF P31B300): Battery cell Voltage high
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P31B3 (INF P31B300) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

Be sure to check that the applicable DTC is output from the hybrid battery system.
After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P31B300" only is output.	A
DTCs except "P31B300" of hybrid battery system are output.	B
DTCs except "P31B300" of hybrid control system are output.	C

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK FREEZE FRAME DATA (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Read the freeze frame data of DTC P31B300.

Powertrain > HV Battery > Trouble Codes

Result	Proceed to
OFF is displayed for "Ready Signal", "SMRP Control Status", "SMRB Control Status" and "SMRG Control Status" and -0.5 A or less is displayed for "Hybrid/EV Battery Current".	A
Other than above	B

HINT:

As the ignition switch ON state may cause the DTC to be stored, freeze frame data is used to judge the cause of the DTC output.

Post-procedure1

REPLACE HYBRID Toyota Prius Vehicle CONTROL ECU

3.	INSPECT NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY (SMRB, SMRG, SMRP)

Click here

REPLACE NO. 1 TRACTION BATTERY DEVICE BOX ASSEMBLY

4.	PERFORM INITIALIZATION (CURRENT SENSOR OFFSET LEARNING)

Click here

END

Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range (P33DA1E-P33DC1E)

DESCRIPTION

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors the internal resistance of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P33DA1E

Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range

The difference in internal resistance of each cell of the No. 1 HV supply stack sub-assembly exceeds the threshold.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly
Service plug grip

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P33DA

P33DB1E

Hybrid/EV Battery Stack 2 Circuit Resistance Out of Range

The difference in internal resistance of each cell of the No. 2 HV supply stack sub-assembly exceeds the threshold.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly
Service plug grip

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P33DB

P33DC1E

Hybrid/EV Battery Stack 3 Circuit Resistance Out of Range

The difference in internal resistance of each cell of the No. 3 HV supply stack sub-assembly exceeds the threshold.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly
Service plug grip

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

P33DC

HINT:

These DTCs can be stored after clearing DTCs and driving the Toyota Prius vehicle for approximately 10 minutes.

MONITOR DESCRIPTION

If there is an abnormal internal resistance in the battery cells, the battery ECU assembly determines that a malfunction has occurred. When the malfunction detection condition is satisfied, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P33DA (INF P33DA1E), P33DB (INF P33DB1E), P33DC (INF P33DC1E): Battery cell malfunction
Required sensors/components	HV battery
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC P33DA (INF P33DA1E) is not detected

DTC P33DB (INF P33DB1E) is not detected

DTC P33DC (INF P33DC1E) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Drive the Toyota Prius vehicle on urban roads for approximately 10 minutes.[*1]
HINT:
- [*1]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- This DTC may not be stored if the vehicle is stopped or being driven at a constant speed.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P33DA1E" is output.	A
"P33DB1E" is output.	B
"P33DC1E" is output.	C

GO TO STEP 4

GO TO STEP 6

2.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

3.	REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE SERVICE PLUG GRIP

4.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

5.	REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE SERVICE PLUG GRIP

6.	CHECK TOTAL DISTANCE DRIVEN

(a) Read the odometer to check the total distance the Toyota Prius vehicle has been driven.

Result		Proceed to
Total distance driven is less than 200000 km (124280 mile)		A
Total distance driven is 200000 km (124280 mile) or more	Current total distance driven - total distance driven when service plug grip replaced = less than 200000 km (124280 mile) *1	A
Total distance driven is 200000 km (124280 mile) or more	Other than above	B

HINT:

*1: If the service plug grip has been replaced, use the total distance driven since it was replaced.

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

7.	REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

HINT:

Click here

REPLACE SERVICE PLUG GRIP

Hybrid/EV Battery Stack 1 Capacity Decline (P33E600-P33E800)

DESCRIPTION

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors the capacity of each HV battery cell to detect malfunctions of the HV battery.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

P33E600

Hybrid/EV Battery Stack 1 Capacity Decline

Full charge capacity of the No. 1 HV supply stack sub-assembly is less than the specified value.

(1 trip detection logic)

No. 1 HV supply stack sub-assembly

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P33E6

P33E700

Hybrid/EV Battery Stack 2 Capacity Decline

Full charge capacity of the No. 2 HV supply stack sub-assembly is less than the specified value.

(1 trip detection logic)

No. 2 HV supply stack sub-assembly

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P33E7

P33E800

Hybrid/EV Battery Stack 3 Capacity Decline

Full charge capacity of the No. 3 HV supply stack sub-assembly is less than the specified value.

(1 trip detection logic)

No. 3 HV supply stack sub-assembly

Does not come on

Master Warning:

Comes on

HV Battery

SAE Code:

P33E8

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch to ON (READY) and drive the Toyota Prius vehicle in EV mode until the mode changes to HV mode.
Turn the ignition switch off and wait for 1.5 hours or more.
Perform plug-in charging until fully charged.
After plug-in charging, wait for 35 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON (READY) and drive the Toyota Prius vehicle in EV mode until the mode changes to HV mode.
Turn the ignition switch off and wait for 1.5 hours or more.
Perform plug-in charging until fully charged.
After plug-in charging, wait for 35 minutes or more.
Turn the ignition switch to ON and wait for 10 seconds or more.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
"P33E600, P33E700 or P33E800" only is output, or DTCs except the ones in the table below are also output.	A
DTCs of hybrid battery system in the table below are output.	B
DTCs of hybrid control system in the table below are output.	C

System	Relevant DTC
Hybrid battery system	P060A47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P060687	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
Hybrid control system	P0A1F94	Hybrid/EV Battery Energy Control Module Unexpected Operation

Post-procedure1

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

CHECK DTC

(a) Check the DTCs that were output when the Toyota Prius vehicle was brought to the workshop.

Result	Proceed to
"P33E600" is also output.	A
"P33E700" is also output.	B
"P33E800" is also output.	C

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

Lost Communication with ECM/PCM "A" Missing Message (U010087)

DESCRIPTION

The battery ECU assembly transmits and receives signals via CAN communication to and from the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

U010087

Lost Communication with ECM/PCM "A" Missing Message

A CAN communication error between the battery ECU assembly and ECM (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

U0100

MONITOR DESCRIPTION

If the battery ECU assembly detects a problem with CAN communication with the ECM, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	U0100 (INF U010087): Lost communication with ECM/PCM
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC U0100 (INF U010087) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 2 minutes or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

NOTICE:

Be sure to check that the applicable DTC is output from the hybrid battery system.

PROCEDURE

1.	CHECK DTC OUTPUT (HV BATTERY)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Post-procedure1

GO TO CAN COMMUNICATION SYSTEM

Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message (U115087)

DESCRIPTION

The battery ECU assembly transmits and receives signals via CAN communication to and from the hybrid vehicle control ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

DTC Output from

Priority

Note

U115087

Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message

The battery ECU assembly does not receive any signals from the hybrid Toyota Prius vehicle control ECU for 1 second or more.

(1 trip detection logic)

Battery ECU assembly
Hybrid vehicle control ECU
Wire harness or connector

Comes on

Master Warning:

Comes on

HV Battery

SAE Code:

U1150

MONITOR DESCRIPTION

If the battery ECU assembly cannot communicate with the hybrid Toyota Prius vehicle control ECU via local CAN communication, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	U1150 (INF U115087): Lost communication with hybrid control module (battery bus)
Required sensors/components	Battery ECU assembly
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Battery ECU assembly

DTC U1150 (INF U115087) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the Toyota Prius vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and wait for 2 minutes or more.[*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK DTC OUTPUT (HYBRID CONTROL)

Pre-procedure1

(a) None

Procedure1

(b) Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Post-procedure1

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

2.	CHECK HYBRID Toyota Prius Vehicle CONTROL ECU (VOLTAGE)

Pre-procedure1

(a) Turn the ignition switch to ON.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Component with harness connected

(Hybrid Toyota Prius Vehicle Control ECU)

Standard Voltage:

Click Location & Routing(K11,A57) Click Connector(K11) Click Connector(A57)

Tester Connection	Condition	Specified Condition	Result
K11-8 ( B1) - Body ground	Ignition switch ON	11 to 14 V	V
A57-10 ( B2) - Body ground	Ignition switch ON	11 to 14 V	V

Post-procedure1

REPAIR OR REPLACE HARNESS OR CONNECTOR (HYBRID Toyota Prius Vehicle CONTROL ECU POWER SOURCE CIRCUIT)

3.	CHECK HARNESS AND CONNECTOR (HYBRID Toyota Prius Vehicle CONTROL ECU - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition	Result
x3-7 (CA1H) - x3-8 (CA1L)	Ignition switch off	108 to 132 Ω	Ω

NOTICE:

Make sure that each connector between the electric Toyota Prius vehicle charger assembly and hybrid vehicle control ECU is not loose or disconnected and its terminals are not deformed or corroded.

Result:

Proceed to
OK
NG

*a	Front view of wire harness connector (to Battery ECU Assembly)

Post-procedure1

(e) Reconnect the battery ECU assembly connector.

(f) Disconnect the SST.

REPLACE BATTERY ECU ASSEMBLY

4.	CHECK HARNESS AND CONNECTOR (HYBRID Toyota Prius Vehicle CONTROL ECU - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

Pre-procedure1

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the hybrid Toyota Prius vehicle control ECU connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Disconnect the C49 shift control actuator assembly (shift actuator ECU) connector.

(e) Disconnect the K53 transmission floor shift assembly (shift control ECU) connector.

(f) Disconnect the R79 solar energy control ECU assembly. (w/ Solar Charging System)

(g) Disconnect the A89 inverter with converter assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(h) Connect the SST.

HINT:

Click here

(i) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Procedure1

(j) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x3,K11) Click Connector(x3) Click Connector(K11)

Tester Connection	Condition	Specified Condition	Result
x3-7 (CA1H) - K11-9 (CA4H)	Ignition switch off	Below 1 Ω	Ω
x3-8 (CA1L) - K11-22 (CA4L)	Ignition switch off	Below 1 Ω	Ω
x3-7 (CA1H) or K11-9 (CA4H) - Other terminals and body ground	Ignition switch off	10 kΩ or higher	kΩ
x3-8 (CA1L) or K11-22 (CA4L) - Other terminals and body ground	Ignition switch off	10 kΩ or higher	kΩ

NOTICE:

Make sure that each connector between the battery ECU assembly and hybrid Toyota Prius vehicle control ECU is not loose or disconnected and its terminals are not deformed or corroded.

Post-procedure1

(k) Reconnect the battery ECU assembly connector.

(l) Disconnect the SST.

(m) Reconnect the inverter with converter assembly connector.

(n) Reconnect the solar energy control ECU assembly. (w/ Solar Charging System)

(o) Reconnect the transmission floor shift assembly (shift control ECU) connector.

(p) Reconnect the shift control actuator assembly (shift actuator ECU) connector.

(q) Reconnect the plugin charge control ECU assembly connector.

(r) Reconnect the hybrid Toyota Prius vehicle control ECU connector.

REPLACE HYBRID VEHICLE CONTROL ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

"HAVE TRACTION BATTERY INSPECTED" is displayed

DESCRIPTION

The battery ECU assembly monitors the SOC (state of charge) of the HV battery. When it finds the HV battery has deteriorated excessively, it will display "Maintenance Required for Traction Battery at Your Dealer" on the multi-information display. If "Maintenance Required for Traction Battery at Your Dealer" is displayed, perform "Battery Diagnosis" and replace the HV supply stack sub-assembly as necessary.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

If "Maintenance Required for Traction Battery at Your Dealer" is displayed on the multi-information display, the message will not be cleared until one of the following conditions is met. If the traction battery is used continually without performing "Battery Diagnosis" for a few weeks*, "Toyota Prius Vehicle START WILL SOON BE DISABLED" and "Maintenance Required for Traction Battery at Your Dealer" are displayed and the use of the HV battery is limited. If it is used more, the ignition switch ON (READY) operation will be disabled.
*: Timing may vary depending on vehicle usage.
Perform plug-in charging several times as specified.
After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	READ VALUE USING GTS

(a) Enter the following menus: Powertrain / HV Battery / Data List / Hybrid/EV Battery Cell 1 to 72 Internal Resistance.

Powertrain > HV Battery > Data List

Tester Display
Hybrid/EV Battery Cell 1 Internal Resistance
Hybrid/EV Battery Cell 2 Internal Resistance
Hybrid/EV Battery Cell 3 Internal Resistance
Hybrid/EV Battery Cell 4 Internal Resistance
Hybrid/EV Battery Cell 5 Internal Resistance
Hybrid/EV Battery Cell 6 Internal Resistance
Hybrid/EV Battery Cell 7 Internal Resistance
Hybrid/EV Battery Cell 8 Internal Resistance
Hybrid/EV Battery Cell 9 Internal Resistance
Hybrid/EV Battery Cell 10 Internal Resistance
Hybrid/EV Battery Cell 11 Internal Resistance
Hybrid/EV Battery Cell 12 Internal Resistance
Hybrid/EV Battery Cell 13 Internal Resistance
Hybrid/EV Battery Cell 14 Internal Resistance
Hybrid/EV Battery Cell 15 Internal Resistance
Hybrid/EV Battery Cell 16 Internal Resistance
Hybrid/EV Battery Cell 17 Internal Resistance
Hybrid/EV Battery Cell 18 Internal Resistance
Hybrid/EV Battery Cell 19 Internal Resistance
Hybrid/EV Battery Cell 20 Internal Resistance
Hybrid/EV Battery Cell 21 Internal Resistance
Hybrid/EV Battery Cell 22 Internal Resistance
Hybrid/EV Battery Cell 23 Internal Resistance
Hybrid/EV Battery Cell 24 Internal Resistance
Hybrid/EV Battery Cell 25 Internal Resistance
Hybrid/EV Battery Cell 26 Internal Resistance
Hybrid/EV Battery Cell 27 Internal Resistance
Hybrid/EV Battery Cell 28 Internal Resistance
Hybrid/EV Battery Cell 29 Internal Resistance
Hybrid/EV Battery Cell 30 Internal Resistance
Hybrid/EV Battery Cell 31 Internal Resistance
Hybrid/EV Battery Cell 32 Internal Resistance
Hybrid/EV Battery Cell 33 Internal Resistance
Hybrid/EV Battery Cell 34 Internal Resistance
Hybrid/EV Battery Cell 35 Internal Resistance
Hybrid/EV Battery Cell 36 Internal Resistance
Hybrid/EV Battery Cell 37 Internal Resistance
Hybrid/EV Battery Cell 38 Internal Resistance
Hybrid/EV Battery Cell 39 Internal Resistance
Hybrid/EV Battery Cell 40 Internal Resistance
Hybrid/EV Battery Cell 41 Internal Resistance
Hybrid/EV Battery Cell 42 Internal Resistance
Hybrid/EV Battery Cell 43 Internal Resistance
Hybrid/EV Battery Cell 44 Internal Resistance
Hybrid/EV Battery Cell 45 Internal Resistance
Hybrid/EV Battery Cell 46 Internal Resistance
Hybrid/EV Battery Cell 47 Internal Resistance
Hybrid/EV Battery Cell 48 Internal Resistance
Hybrid/EV Battery Cell 49 Internal Resistance
Hybrid/EV Battery Cell 50 Internal Resistance
Hybrid/EV Battery Cell 51 Internal Resistance
Hybrid/EV Battery Cell 52 Internal Resistance
Hybrid/EV Battery Cell 53 Internal Resistance
Hybrid/EV Battery Cell 54 Internal Resistance
Hybrid/EV Battery Cell 55 Internal Resistance
Hybrid/EV Battery Cell 56 Internal Resistance
Hybrid/EV Battery Cell 57 Internal Resistance
Hybrid/EV Battery Cell 58 Internal Resistance
Hybrid/EV Battery Cell 59 Internal Resistance
Hybrid/EV Battery Cell 60 Internal Resistance
Hybrid/EV Battery Cell 61 Internal Resistance
Hybrid/EV Battery Cell 62 Internal Resistance
Hybrid/EV Battery Cell 63 Internal Resistance
Hybrid/EV Battery Cell 64 Internal Resistance
Hybrid/EV Battery Cell 65 Internal Resistance
Hybrid/EV Battery Cell 66 Internal Resistance
Hybrid/EV Battery Cell 67 Internal Resistance
Hybrid/EV Battery Cell 68 Internal Resistance
Hybrid/EV Battery Cell 69 Internal Resistance
Hybrid/EV Battery Cell 70 Internal Resistance
Hybrid/EV Battery Cell 71 Internal Resistance
Hybrid/EV Battery Cell 72 Internal Resistance

Result	Proceed to
"Hybrid/EV Battery Cell 1 to 24 Internal Resistance" is out of the specified range.	A
"Hybrid/EV Battery Cell 25 to 48 Internal Resistance" is out of the specified range.	B
"Hybrid/EV Battery Cell 49 to 72 Internal Resistance" is out of the specified range.	C
All values are not within the specified range.	D

(b) Turn the ignition switch off.

REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY

REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY

DIAGNOSIS

(a) Confirm with the owner whether or not to perform "Battery Diagnosis".

HINT:

Battery Diagnosis normally takes about 30 minutes to perform. If HV battery SOC learning has not been completed, Battery Diagnosis takes about 1 hour in addition to the time required to perform plug-in charging.
Depending on the Toyota Prius vehicle usage, it is possible to reuse the HV supply stack sub-assembly. However, if it is judged not possible to be reused, replace the HV supply stack sub-assembly.

Result	Proceed to
"Battery Diagnosis" is performed.	A
"Battery Diagnosis" is not performed.	B

REPLACE HV SUPPLY BATTERY ASSEMBLY

3.	PERFORM UTILITY (BATTERY DIAGNOSIS)

(a) Perform the "Battery Diagnosis".

HINT:

Click here

NOTICE:

Do not perform battery diagnosis while the hybrid system light is illuminated.
Perform battery diagnosis with the HV battery installed correctly.
Do not perform battery diagnosis while changing from inspection mode to another mode.
Make sure to turn the ignition switch off after battery diagnosis to prevent the auxiliary battery from being discharged.
If the learning of SOC (state of charge) has not been performed, perform battery diagnosis after plug-in charging the Toyota Prius vehicle as specified.

HINT:

As the "Battery Diagnosis" discharges the HV battery to a low SOC, if the ignition switch is turned to ON immediately after the "Battery Diagnosis" is completed, DTC P31AB16 (Hybrid Battery Cell Low Voltage) may be stored. For this reason, leave the vehicle as is for 1 hour to allow the HV battery SOC to recover.

(b) Check the battery diagnosis result.

Result	Proceed to
Normal ("There is no need to replace HV supply battery assembly.")	A
Replace (Replace the listed HV supply stack sub-assemblies)	B

NOTICE:

If "Maintenance Required for Traction Battery at Your Dealer" is displayed on the multi-information display, the message will not be cleared even after it is judged that "There is no need to replace battery". It can be cleared only after performing "Battery Status Info Update".
Perform "Battery Status Info Update" after replacing a HV supply stack sub-assembly of HV battery.

REPLACE HV SUPPLY STACK SUB-ASSEMBLY

4.	PERFORM UTILITY (BATTERY STATUS INFO UPDATE)

(a) Perform "Battery Status Info Update".

HINT:

Click here

NOTICE:

Do not perform battery status info update while the hybrid system light is illuminated.
Perform battery status info update with the HV battery installed correctly.
If "Battery Status Info Update" is performed more than necessary, it may deteriorate the HV battery.
Make sure to perform "Battery Status Info Update" if the HV supply stack sub-assembly or HV supply battery assembly is replaced.
Make sure to turn the ignition switch off after battery status info update to prevent the auxiliary battery from being discharged.

COMPLETED

ECU Power Source Circuit

DESCRIPTION

If the ignition switch is ON, the hybrid vehicle control ECU applies current to the MREL terminal to turn the IGCT SCENE relay on. This supplies power to the IGCT terminals.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the auxiliary negative (-) battery terminal.
Click here
When disconnecting and reconnecting the auxiliary battery.
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK BATTERY ECU ASSEMBLY (IGCT VOLTAGE)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Connect the SST.

HINT:

Click here

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(d) Connect the cable to the negative (-) auxiliary battery terminal.

(e) Turn the ignition switch to ON.

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition
x3-5 (IGCT) - Body ground	Ignition switch ON	11 to 14 V
x3-18 (IGC2) - Body ground	Ignition switch ON	11 to 14 V

NOTICE:

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the ignition switch is turned to ON with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

*a	Front view of wire harness connector (to Battery ECU Assembly)

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

(i) Reconnect the battery ECU assembly connector.

(j) Disconnect the SST.

GO TO STEP 3

2.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - BODY GROUND)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

Standard Resistance:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition
x3-25 (GND) - Body ground	Always	Below 1 Ω
x3-26 (GND1) - Body ground	Always	Below 1 Ω
x3-27 (GND2) - Body ground	Always	Below 1 Ω

(d) Reconnect the battery ECU assembly connector.

GO TO PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK FUSE (IGCT SCENE NO. 3)

(a) Remove the IGCT SCENE NO. 3 fuse from the fuse block assembly.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
IGCT SCENE NO. 3 fuse	Always	Below 1 Ω

GO TO STEP 6

4.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - FUSE BLOCK ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Remove the IGCT SCENE NO. 3 fuse from the fuse block assembly.

HINT:

Click here

(d) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition
x3-5 (IGCT) - 2 (IGCT SCENE NO. 3 fuse holder)	Always	Below 1 Ω

(f) Reconnect the battery ECU assembly connector.

(g) Disconnect the SST.

(h) Install the IGCT SCENE NO. 3 fuse to the fuse block assembly.

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (FUSE BLOCK ASSEMBLY - NO. 3 RELAY BLOCK)

(a) Remove the IGCT SCENE NO. 3 fuse from the fuse block assembly.

(b) Remove the IGCT SCENE relay from the No. 3 relay block.

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 (IGCT SCENE relay holder) - 1 (IGCT SCENE NO. 3 fuse holder)	Always	Below 1 Ω

(d) Install the IGCT SCENE relay to the No. 3 relay block.

(e) Install the IGCT SCENE NO. 3 fuse to the fuse block assembly.

CHECK ECU POWER SOURCE CIRCUIT (HYBRID CONTROL SYSTEM)

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - FUSE BLOCK ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves and protective goggles.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Remove the IGCT SCENE NO. 3 fuse from the fuse block assembly.

HINT:

Click here

(d) Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(x3) Click Connector(x3)

Tester Connection	Condition	Specified Condition
x3-5 (IGCT) or 2 (IGCT SCENE NO. 3 fuse holder) - Body ground and other terminals	Always	Below 1 Ω

(f) Reconnect the battery ECU assembly connector.

(g) Disconnect the SST.

(h) Install the IGCT SCENE NO. 3 fuse to the fuse block assembly.

REPLACE FUSE (IGCT SCENE NO. 3)

7.	REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE FUSE (IGCT SCENE NO. 3)

Instructions for Connecting SST

PROCEDURE

1.	CONNECT THE SST

SST: 09893-10050

CAUTION:

Be sure to wear insulated gloves and protective goggles.

NOTICE:

Make sure to observe the following points when using the SST.

Set it in a secure, flat place.
Set it in a dry place protected from dust and water.

(a) Connect the SST to the ex1 HV supply battery assembly connector and the HV supply battery assembly.

NOTICE:

Make sure that the connector is connected securely.

*1	HV Supply Battery Assembly	-	-
*a	SST	*b	SST (Toyota Prius Vehicle Side)
*c	SST (HV Supply Battery Assembly Side)	-	-

END

Hybrid Battery System (for M20a-fxs)Hybrid Vehicle Control Ecu

Toyota Prius (XW60) 2023-2025 Service Manual

Hybrid Battery System (for Phev Model)

Precaution
Definition Of Terms
Parts Location
How To Proceed With Troubleshooting
Utility
Terminals Of Ecu
Diagnosis System
Dtc Check / Clear
Freeze Frame Data
Vehicle Behavior Chart
Data List / Active Test
Diagnostic Trouble Code Chart
Registration / Initialization / Learning
VEHICLE CONTROL HISTORY (RoB)
System Voltage (BATT) Circuit Short to Ground or Open (P056014)
Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid (P060629)
Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground (P0A9B11,...,P0CB215)
Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range (P0A9B1C,...,P0CB21C)
Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range (P0A9B2A,...,P306B62)
Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure (P0AA749)
Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground (P0ABF11,P0ABF15,P0B0E11,P0B0E15,P1CBB12,P1CBB14,P2BE411,P2BE415)
Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure (P0ABF28)
Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range (P0ABF2A)
Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure (P0B1362)
Hybrid/EV Battery State of Charge High (P0C3000)
Hybrid/EV Battery Cooling System "A" Performance (P0C3200)
Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground (P0C4211,P0C4215,P0CD511,P0CD515)
Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground (P0D0A11)
Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open (P0D0A15)
Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground (P0D1111)
Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open (P0D1115)
Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold (P0D1A18,P0D1A19,P1F6900)
Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck (P0D1A71)
Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance (P0E2D00)
Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground (P0E6D11)
Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open (P0E6D15)
Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure (P19CF62)
Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range (P1A001C,P1A051C,P301A1C)
Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold (P1A6017,P1A6317,P31AA17)
Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold (P1A6116,P1A6416,P31AB16)
Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) (P1A8100,P1A8600,P1A8B00)
Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open (P1AC413-P1AC613)
Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On (P1AC49E-P1AC69E)
System Voltage (AM) Circuit Voltage Below Threshold (P1AFC00)
Flying Capacitor Circuit Voltage Out of Range (P1AFD00)
Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range (P1AFD1C)
Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground (P1B4011,P1B4015,P1B4511,P1B4515)
Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure (P1B4A62)
Hybrid/EV Battery Heater Relay Actuator Stuck Open (P1B4B72)
Hybrid/EV Battery Heater Relay Actuator Stuck Closed (P1B4B73)
Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery (P1B8312,P1B8314)
Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range (P1B831C)
High Voltage Power Resource Internal Electronic Failure (P1C8549)
Hybrid/EV Battery Stack 1 Voltage Difference Out of Range (P1CC81E,P1CC91E,P1CCA1E)
Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range (P2BE41C)
Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure (P2BE428)
Hybrid/EV Battery Discharge Control Malfunction (P300000)
Hybrid/EV Battery Control System Circuit Voltage Below Threshold (P300016)
Hybrid/EV Battery Control System Over Temperature (P30004B)
Hybrid/EV Battery Voltage High (P31B300)
Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range (P33DA1E-P33DC1E)
Hybrid/EV Battery Stack 1 Capacity Decline (P33E600-P33E800)
Lost Communication with ECM/PCM "A" Missing Message (U010087)
Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message (U115087)
"HAVE TRACTION BATTERY INSPECTED" is displayed
ECU Power Source Circuit
Instructions for Connecting SST

Actual pages

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*b	Battery Collection Agent

Toyota Prius: Hybrid Battery System (for Phev Model)

Precaution

Definition Of Terms

Parts Location

How To Proceed With Troubleshooting

Utility

Terminals Of Ecu

Diagnosis System

Dtc Check / Clear

Freeze Frame Data

Vehicle Behavior Chart

Data List / Active Test

Diagnostic Trouble Code Chart

Registration / Initialization / Learning

VEHICLE CONTROL HISTORY (RoB)

System Voltage (BATT) Circuit Short to Ground or Open (P056014)

Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid (P060629)

Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground (P0A9B11,...,P0CB215)

Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range (P0A9B1C,...,P0CB21C)

Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range (P0A9B2A,...,P306B62)

Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure (P0AA749)

Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground (P0ABF11,P0ABF15,P0B0E11,P0B0E15,P1CBB12,P1CBB14,P2BE411,P2BE415)

Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure (P0ABF28)

Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range (P0ABF2A)

Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure (P0B1362)

Hybrid/EV Battery State of Charge High (P0C3000)

Hybrid/EV Battery Cooling System "A" Performance (P0C3200)

Hybrid/EV Battery Pack Coolant Temperature Sensor "A" Circuit Low Circuit Short to Ground (P0C4211,P0C4215,P0CD511,P0CD515)

Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Ground (P0D0A11)

Hybrid/EV Battery Charging System Positive Contactor Control Circuit Short to Auxiliary Battery or Open (P0D0A15)

Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Ground (P0D1111)

Hybrid/EV Battery Charging System Negative Contactor Control Circuit Short to Auxiliary Battery or Open (P0D1115)

Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold (P0D1A18,P0D1A19,P1F6900)

Hybrid/EV Battery Pack Coolant Control Valve "B" Performance/Stuck Off Actuator Stuck (P0D1A71)

Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance (P0E2D00)

Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground (P0E6D11)

Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open (P0E6D15)

Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure (P19CF62)

Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range (P1A001C,P1A051C,P301A1C)

Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold (P1A6017,P1A6317,P31AA17)

Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold (P1A6116,P1A6416,P31AB16)

Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) (P1A8100,P1A8600,P1A8B00)

Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open (P1AC413-P1AC613)

Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On (P1AC49E-P1AC69E)

System Voltage (AM) Circuit Voltage Below Threshold (P1AFC00)

Flying Capacitor Circuit Voltage Out of Range (P1AFD00)

Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range (P1AFD1C)

Hybrid/EV Battery Heater 1 Temperature Sensor Circuit Short to Ground (P1B4011,P1B4015,P1B4511,P1B4515)

Hybrid/EV Battery Heater Temperature Sensor Signal Compare Failure (P1B4A62)

Hybrid/EV Battery Heater Relay Actuator Stuck Open (P1B4B72)

Hybrid/EV Battery Heater Relay Actuator Stuck Closed (P1B4B73)

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit High Circuit Short to Auxiliary Battery (P1B8312,P1B8314)

Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range (P1B831C)

High Voltage Power Resource Internal Electronic Failure (P1C8549)

Hybrid/EV Battery Stack 1 Voltage Difference Out of Range (P1CC81E,P1CC91E,P1CCA1E)

Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Circuit Voltage Out of Range (P2BE41C)

Hybrid/EV Battery Pack Current Sensor "C" Circuit Range/Performance Signal Bias Level Out of Range / Zero Adjustment Failure (P2BE428)

Hybrid/EV Battery Discharge Control Malfunction (P300000)

Hybrid/EV Battery Control System Circuit Voltage Below Threshold (P300016)

Hybrid/EV Battery Control System Over Temperature (P30004B)

Hybrid/EV Battery Voltage High (P31B300)

Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range (P33DA1E-P33DC1E)

Hybrid/EV Battery Stack 1 Capacity Decline (P33E600-P33E800)

Lost Communication with ECM/PCM "A" Missing Message (U010087)

Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message (U115087)

"HAVE TRACTION BATTERY INSPECTED" is displayed

ECU Power Source Circuit

Instructions for Connecting SST

Toyota Prius (XW60) 2023-2025 Service Manual

Hybrid Battery System (for Phev Model)

Actual pages

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