Toyota Prius: Sub Battery System

Toyota Prius (XW60) 2023-2025 Service Manual / Power Source/Network / Power Distribution / Sub Battery System

Precaution
Parts Location
System Diagram
How To Proceed With Troubleshooting
Terminals Of Ecu
Freeze Frame Data
Fail-safe Chart
VEHICLE CONTROL HISTORY (RoB)
Sub Battery Control Module Internal Temperature Sensor "A" Circuit Short to Ground (B103211,...,B230562)
Sub Battery System Output Power Relay "F" Actuator Stuck On (B22937E)
Deterioration of Sub Battery (B22E000)

Precaution

PRECAUTION

PRECAUTIONS FOR INSPECTING SUB BATTERY SYSTEM

NOTICE:

When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here

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

Parts Location

PARTS LOCATION

ILLUSTRATION

NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY

- 2ND BATT FUSE

SHIFT CONTROL ACTUATOR ASSEMBLY

- SHIFT ACTUATOR ECU

BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

ILLUSTRATION

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

POWER DISTRIBUTION BOX ASSEMBLY

TRANSMISSION FLOOR SHIFT ASSEMBLY

- SHIFT CONTROL ECU

INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY)

DLC3

System Diagram

SYSTEM DIAGRAM

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the sub battery system.
*: Use the GTS.

PROCEDURE

1.	Toyota Prius Vehicle BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

PRE-CHECK

(a) Measure the auxiliary battery voltage.

Standard voltage:

12 V or higher (ignition switch off)

HINT:

If the auxiliary battery voltage is below 12 V, recharge or replace the auxiliary battery.

(b) Check the fuses and relays.

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

4.	CHECK CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check if the CAN communication system is functioning normally.

HINT:

Refer to Communication Bus Check in CAN Communication System.

for HEV Model:
Click here
for PHEV Model:
Click here

OK:

CAN communication system is functioning normally.

GO TO CAN COMMUNICATION SYSTEM

for HEV Model:
Click here
for PHEV Model:
Click here

5.	CHECK FOR DTC*

(a) Check and record DTCs and Freeze Frame Data.

Body Electrical > Sub Battery System > Trouble Codes

(b) If the DTCs is output, record it.

Result	Proceed to
DTCs are not output	A
DTCs are output.	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

6.	CHECK Toyota Prius Vehicle CONTROL HISTORY (RoB)*

(a) Check and record Vehicle Control History (RoB).

Body Electrical > Sub Battery System > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

(b) If the vehicle control history is output, record it.

Result	Proceed to
RoBs are not output	A
RoBs are output.	B

USE SIMULATION METHOD TO CHECK

GO TO Toyota Prius Vehicle CONTROL HISTORY (ROB)

Terminals Of Ecu

TERMINALS OF ECU

INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY)

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
K26-1 (BUA3) - K26-2 (GND)	Backup power source output to C-ACT	Ignition switch off	Below 1 V
K26-2 (GND) - Body ground	Earth ground	Ignition switch off	Below 1 Ω
K26-3 (CANH) - K26-2 (GND)	CAN communication signal	Ignition switch ON	Pulse generation
K26-5 (WU1) - K26-2 (GND)	Start request signal input from brake system	Ignition switch ON	8 to 16 V
K26-6 (BUSE) - K26-2 (GND)	Backup power source output to A1ECU	Ignition switch ON	8 to 16 V
K26-7 ( B) - K26-2 (GND)	System 1 ( B) power source	Always	8 to 16 V
K26-9 (BUAE) - K26-2 (GND)	Backup power source output to A2ECU	Ignition switch ON	8 to 16 V
K26-11 (CANL) - K26-2 (GND)	CAN communication signal	Ignition switch ON	Pulse generation
K26-14 (BR) - K26-2 (GND)	PWM communication signal input from transmission floor shift assembly (shift control ECU)	Ignition switch ON	Pulse generation
K26-15 (RO) - K26-2 (GND)	PWM communication signal output to transmission floor shift assembly (shift control ECU)	Ignition switch ON	Pulse generation
K26-16 (IG) - K26-2 (GND)	IGR signal input	Ignition switch ON	8 to 16 V
K26-17 (DRO1) - K26-2 (GND)	Door courtesy (door open/close) signal input	Driver door closed	8 to 16 V
K26-19 (BUA) - K26-2 (GND)	Backup power source output to A-ACT	Ignition switch ON	8 to 16 V

Freeze Frame Data

FREEZE FRAME DATA

HINT:

The integrated capacitor (integration control supply) records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored.

FREEZE FRAME DATA

(a) Check the Freeze Frame Data when a DTC is output.

Body Electrical > Sub Battery System > Trouble Codes

(b) Select a DTC in order to display its Freeze Frame Data.

LIST OF FREEZE FRAME DATA

Body Electrical > Sub Battery System

Tester Display
Total Distance Traveled
Total Distance Traveled - Unit
IGR Switch
H Switch
BR Signal
RO Signal
Door Unlock Operation Request Signal at Collision
Door Courtesy Signal
Wake Up Request Signal
DC/DC Converter Status
System Voltage Relay
System Voltage
AECU Relay
AECU Output Voltage
AECU Output Current
A2ECU Output Voltage
BECU Relay
BECU Output Voltage
BECU Output Current
CECU Relay
CECU Output Voltage
CECU Output Current
AACT Relay
AACT Output Voltage
AACT Output Current
BACT Relay
BACT Upstream Through Relay
BACT Downstream Through Relay
BACT Output Voltage
BACT Output Current
CACT Relay
CACT Output Voltage
CACT Output Current
Dark Current Cut Relay
Backflow Prevention Circuit Downstream Relay
Backflow Prevention Circuit Upstream Relay
Inflow Prevention Relay
Charging Circuit Information
Cell Balance Circuit Information
Reset Prevention Circuit Information
Control Status
BUV Voltage
PWB Voltage
PWB Current
Capacitor Voltage
Capacitor Current
Capacitor Temperature
Capacitor Resistance Calculation Value
Capacitor Capacity Calculation Value
Unit Temperature 1
Unit Temperature 2
Protection Circuit Diagnosis Signal (GND Overcurrent Detection)
Protection Circuit Diagnosis Signal (PWB Overvoltage Detection)
Protection Circuit Diagnosis Signal (PWB Overcurrent Detection)
Protection Circuit Diagnosis Signal (PWC Overcurrent Detection)
DC/DC Converter Step Up/Step Down Primary Power Supply Side Ground Fault Diagnosis Result
DC/DC Converter Step Up/Step Down Capacitor Side Ground Fault Diagnosis Result
DC/DC Converter Step Up/Step Down GND Side Ground Fault Diagnosis Result
DC/DC Converter Step Up/Step Down Discharging Diagnosis Result
DC/DC Converter Step Up/Step Down Charging Diagnosis Result
Capacitor Cell Overvoltage Diagnosis Result
Reset Prevention Circuit Short Diagnosis Result
AACT Output Terminal Ground Fault Diagnosis Result
AECU/A2ECU Output Terminal Ground Fault Diagnosis Result

Fail-safe Chart

FAIL-SAFE CHART

When the following DTCs are stored in the integrated capacitor (integration control supply), the system enters fail-safe mode.

Fail-safe Mode

Transition Conditions	Fail-safe Contents	Return Conditions
A DTC is stored for the integrated capacitor (integration control supply)	Remote park prohibited	After returning to normal, the ECU is reset after 6 minutes or more by turning off the ignition switch

VEHICLE CONTROL HISTORY (RoB)

VEHICLE CONTROL HISTORY (RoB)

DESCRIPTION OF ROB

The vehicle control history (RoB) is a function that records ECU data (record data) when triggered by specific vehicle behavior.
Checking history information and freeze frame data can be of use when performing troubleshooting, when a customer indicates that "the Toyota Prius vehicle cannot transition to advanced drive" or "advanced drive is canceled".

PRECAUTIONS FOR USE

Vehicle control history (RoB) is updated whenever a trigger occurs, therefore make sure to save data prior to checking symptoms.
Vehicle control history (RoB) might also be stored when the Active Test is performed or learning values, etc. are relearned. In this case, clear the Toyota Prius vehicle control history (RoB) before returning the vehicle.

CHECK VEHICLE CONTROL HISTORY (SUB BATTERY SYSTEM)

(a) Read the Vehicle Control History (RoB) according to the display on the GTS.

Body Electrical > Sub Battery System > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

Vehicle Control History Item

Code	Item	Trigger Description
X0A74	Sub Battery Failure Detection	Toyota Prius Vehicle conditions and integrated capacitor (integration control supply) status stored when the main battery malfunctioned.
X0A76	Sub Battery Overvoltage Detection	Integrated capacitor (integration control supply) status stored when overvoltage of the main battery was detected.

Stored Data

Number of Triggers	Record Data		Note
Number of Triggers	Point	Sampling Period	Note
4 codes HINT: If the detection conditions for a code that is currently stored are met again in a different trip, the code will be overwritten. If the detection conditions for a code that is currently stored are met again in the same trip, the code will be overwritten. If the detection conditions for a code that is not currently stored are met, the code will be stored.	1 point (no time-series data)	-	The data can be cleared by using the GTS.

CLEAR Toyota Prius Vehicle CONTROL HISTORY (SUB BATTERY SYSTEM)

(a) Read the Vehicle Control History (RoB) according to the display on the GTS.

Body Electrical > Sub Battery System > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

(b) Press the DTC clear button.

NOTICE:

By performing this procedure, all stored Vehicle Control History (RoB) items will be cleared.

Sub Battery Control Module Internal Temperature Sensor "A" Circuit Short to Ground (B103211,...,B230562)

DESCRIPTION

Charging of the 2nd stage power source from the auxiliary battery is performed in preparation for when an auxiliary battery power source malfunction occurs.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	DTC Output from	Priority
B103211	Sub Battery Control Module Internal Temperature Sensor "A" Circuit Short to Ground	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B103215	Sub Battery Control Module Internal Temperature Sensor "A" Circuit Short to Battery or Open	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22937F	Sub Battery System Output Power Relay "F" Actuator Stuck Off	The monitored CACT output voltage is at the threshold or less for 1 second or more (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22AF00	Internal DC/DC Converter System Performance	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22B017	Internal DC/DC Converter (Circuit 1) Circuit Voltage Above Threshold	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22B117	Internal DC/DC Converter (Circuit 2) Circuit Voltage Above Threshold	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22B419	Internal DC/DC Converter Input Current Circuit Current Above Threshold	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22B519	Internal DC/DC Converter Current Circuit Current Above Threshold	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22B911	Sub Battery Control Module Reset Prevention Circuit Circuit Short to Ground	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22B915	Sub Battery Control Module Reset Prevention Circuit Circuit Short to Battery or Open	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22C57F	Sub Battery System Output Power Relay "B" Actuator Stuck Off	The monitored AACT output voltage is at the threshold or less for 10 seconds or more (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22C67E	Sub Battery System Input Power Relay "A" Actuator Stuck On	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22C67F	Sub Battery System Input Power Relay "A" Actuator Stuck Off	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22CA7F	Sub Battery System Output Power Relay "A" Actuator Stuck Off	The monitored AECU and A2ECU are at the output voltage threshold or less for 10 seconds or more (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22D562	Sub Battery Control Module System Voltage Sensor Signal Compare Failure	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22D61C	Sub Battery Control Module Overcurrent/Overvoltage Detection Circuit Voltage Out of Range	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22E417	Sub Battery Circuit Voltage Above Threshold	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22E619	Sub Battery Circuit Current Above Threshold	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B22EF7E	Sub Battery System Input Power Relay "B" Actuator Stuck On	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A
B230562	Internal Control Module Sub Battery Monitor Voltage Signal Compare Failure	An internal malfunction of the integrated capacitor (integration control supply) is detected (1 trip detection logic)	Integrated capacitor (integration control supply)	User informed: Yes	Sub Battery System	A

CHECK FOR DTCs

(a) Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

(b) Turn the ignition switch off and wait 6 minutes or more. (A)

(d) Turn the GTS on. (C)

(e) Wait for 10 seconds or more. (D)

(f) Read the DTCs. (E)

HINT:

If a DTC is output, the system is malfunctioning.
If a DTC is not output, perform the following procedure.

(g) Enter the following menus: Body Electrical / Sub Battery System / Utility / All Readiness. (F)

(h) Enter the DTC to be checked. (G)

(i) Check the DTC judgment result. (H)

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
If the judgment result is INCOMPLETE, perform steps (A) through (H) again.

CAUTION / NOTICE / HINT

NOTICE:

When removing/installing the transmission floor shift assembly (shift control ECU)/shift control actuator assembly (shift actuator ECU) or disconnecting/connecting connectors, make sure there is no power* supplied.
*: Auxiliary battery, sub battery, integrated capacitor (integration control supply), etc.
Before removing and installing the integrated capacitor (integration control supply), make sure the cable is disconnected from the negative (-) auxiliary battery terminal after 5 minutes or more has elapsed since the ignition switched was turned off.
Before performing troubleshooting, check the state of fuses and connecters of this circuit, and contact voltage of respective terminals.

PROCEDURE

1.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Sub Battery System > Trouble Codes

Result	Proceed to
B103211, B103215, B22937F, B22AF00, B22B017, B22B117, B22B419, B22B519, B22B911, B22B915, B22C57F, B22C67E, B22C67F, B22CA7F, B22D562, B22D61C, B22E417, B22E619, B22EF7E or B230562 is output	A
B103211, B103215, B22937F, B22AF00, B22B017, B22B117, B22B419, B22B519, B22B911, B22B915, B22C57F, B22C67E, B22C67F, B22CA7F, B22D562, B22D61C, B22E417, B22E619, B22EF7E or B230562 is not output	B

REPLACE INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY)

USE SIMULATION METHOD TO CHECK

Sub Battery System Output Power Relay "F" Actuator Stuck On (B22937E)

DESCRIPTION

A malfunction check of the internal relay used to turn on/off the backup function is performed when an auxiliary battery power source malfunction occurs.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	DTC Output from	Priority
B22937E	Sub Battery System Output Power Relay "F" Actuator Stuck On	The monitored CACT output voltage is at the threshold or more for 10 seconds or more (1 trip detection logic)	Integrated capacitor (integration control supply) Brake booster with master cylinder assembly Harness or connector	User informed: Yes	Sub Battery System	A

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

DTC Output from

Priority

B22937E

Sub Battery System Output Power Relay "F" Actuator Stuck On

The monitored CACT output voltage is at the threshold or more for 10 seconds or more

(1 trip detection logic)

Integrated capacitor (integration control supply)
Brake booster with master cylinder assembly
Harness or connector

User informed: Yes

Sub Battery System

CHECK FOR DTCs

(a) Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

(b) Turn the ignition switch off and wait 6 minutes or more. (A)

(d) Turn the GTS on. (C)

(e) Wait for 10 seconds or more. (D)

(f) Read the DTCs. (E)

HINT:

If a DTC is output, the system is malfunctioning.
If a DTC is not output, perform the following procedure.

(g) Enter the following menus: Body Electrical / Sub Battery System / Utility / All Readiness. (F)

(h) Enter the DTC to be checked. (G)

(i) Check the DTC judgment result. (H)

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
If the judgment result is INCOMPLETE, perform steps (A) through (H) again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When removing/installing the transmission floor shift assembly (shift control ECU)/shift control actuator assembly (shift actuator ECU) or disconnecting/connecting connectors, make sure there is no power* supplied.
*: Auxiliary battery, sub battery, integrated capacitor (integration control supply), etc.
Before removing and installing the integrated capacitor (integration control supply), make sure the cable is disconnected from the negative (-) auxiliary battery terminal after 5 minutes or more has elapsed since the ignition switched was turned off.
Before performing troubleshooting, check the state of fuses and connecters of this circuit, and contact voltage of respective terminals.

PROCEDURE

1.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Sub Battery System > Trouble Codes

Result	Proceed to
B22937E is output	A
B22937E is not output	B

USE SIMULATION METHOD TO CHECK

2.	CHECK HARNESS AND CONNECTOR (INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY))

Pre-procedure1

(a) Disconnect the K26 integrated capacitor (integration control supply) connector.

Procedure1

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

Standard Voltage:

Click Location & Routing(K26) Click Connector(K26)

Tester Connection	Condition	Specified Condition	Result
K26-1 (BUA3) - Body ground	Ignition switch off	Below 5 V	V

Post-procedure1

REPLACE INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY)

3.	CHECK HARNESS AND CONNECTOR (INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY) - BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)

Pre-procedure1

(a) Disconnect the A3 brake booster with master cylinder assembly connector.

Procedure1

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

Standard Voltage:

Click Location & Routing(K26,A3) Click Connector(K26) Click Connector(A3)

Tester Connection	Condition	Specified Condition	Result
K26-1 (BUA3) or A3-2 (CBKP) - Body ground	Ignition switch off	Below 1 V	V

Post-procedure1

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Deterioration of Sub Battery (B22E000)

DESCRIPTION

Charging of the 2nd stage power source from the auxiliary battery is performed in preparation for when an auxiliary battery power source malfunction occurs

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

DTC Output from

Priority

B22E000

Deterioration of Sub Battery

An internal malfunction of the integrated capacitor (integration control supply) is detected

(1 trip detection logic)

Integrated capacitor (integration control supply)

User informed: Yes

Sub Battery System

CHECK FOR DTCs

(a) Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

(b) Turn the ignition switch off and wait 6 minutes or more. (A)

(d) Turn the GTS on. (C)

(e) Wait for 10 seconds or more. (D)

(f) Read the DTCs. (E)

HINT:

If a DTC is output, the system is malfunctioning.
If a DTC is not output, perform the following procedure.

(g) Enter the following menus: Body Electrical / Sub Battery System / Utility / All Readiness. (F)

(h) Enter the DTC to be checked. (G)

(i) Check the DTC judgment result. (H)

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
If the judgment result is INCOMPLETE, perform steps (A) through (H) again.

CAUTION / NOTICE / HINT

NOTICE:

When removing/installing the transmission floor shift assembly (shift control ECU)/shift control actuator assembly (shift actuator ECU) or disconnecting/connecting connectors, make sure there is no power* supplied.
*: Auxiliary battery, sub battery, integrated capacitor (integration control supply), etc.
Before removing and installing the integrated capacitor (integration control supply), make sure the cable is disconnected from the negative (-) auxiliary battery terminal after 5 minutes or more has elapsed since the ignition switched was turned off.
Before performing troubleshooting, check the state of fuses and connecters of this circuit, and contact voltage of respective terminals.
If a warning message remains on the meter after clearing the DTCs, replace the integrated capacitor (integration control supply).

PROCEDURE