Toyota Prius: Power Door Lock Control System

Toyota Prius (XW60) 2023-2025 Service Manual / Vehicle Interior / Door Lock / Power Door Lock Control System

Precaution
Parts Location
System Diagram
How To Proceed With Troubleshooting
Operation Check
Customize Parameters
Initialization
Problem Symptoms Table
Terminals Of Ecu
Data List / Active Test
Diagnostic Trouble Code Chart
VEHICLE CONTROL HISTORY (RoB)
Impact Detection Sensor Circuit Malfunction (B124300)
All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder
All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch
Only Back Door cannot be Opened

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL

NOTICE:

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

PRECAUTIONS FOR REMOVAL, INSTALLATION AND REPLACEMENT OF COMPONENTS

(a) After replacing certain components, it may be necessary to update the ECU security key.

Click here

PRECAUTIONS WHEN USING GTS

(a) When using the GTS with the ignition switch off to troubleshoot:

Connect the GTS to the Toyota Prius vehicle, and turn a door control switch of the multiplex network master switch assembly at intervals of 1.5 second intervals until communication between the GTS and vehicle begins.

PRECAUTION FOR REGISTRATION

(a) Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here

PRECAUTION WHEN REPLACING AIRBAG ECU ASSEMBLY

(a) When the airbag ECU assembly is replaced, update the ECU security key.

Click here

Parts Location

PARTS LOCATION

ILLUSTRATION

*A	for Remote Connect Compatible Type	*B	w/ Door Control Switch
*1	MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)	*2	POWER DISTRIBUTION BOX ASSEMBLY - DOOR BACK FUSE - ALL DOOR LOCK RELAY - D DOOR UNLOCK RELAY - L/D DOOR UNLOCK RELAY - DOOR BACK RELAY
*3	CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)	*4	AIRBAG ECU ASSEMBLY
*5	DCM (TELEMATICS TRANSCEIVER)	*6	MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
*7	DOOR CONTROL SWITCH ASSEMBLY	*8	DLC3

ILLUSTRATION

*A	w/ Power Back Door System	*B	w/o Power Back Door System
*1	FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH - DOOR LOCK MOTOR - DOOR COURTESY SWITCH - DOOR UNLOCK DETECTION SWITCH	*2	FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - DOOR LOCK MOTOR - DOOR COURTESY SWITCH - DOOR UNLOCK DETECTION SWITCH - DOOR KEY LOCK AND UNLOCK SWITCH
*3	REAR DOOR LOCK WITH MOTOR ASSEMBLY RH - DOOR LOCK MOTOR - DOOR COURTESY SWITCH - DOOR UNLOCK DETECTION SWITCH	*4	REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - DOOR LOCK MOTOR - DOOR COURTESY SWITCH - DOOR UNLOCK DETECTION SWITCH
*5	REAR DOOR OUTSIDE HANDLE ASSEMBLY RH - REAR DOOR OPEN SWITCH	*6	REAR DOOR OUTSIDE HANDLE ASSEMBLY LH - REAR DOOR OPEN SWITCH
*7	DOOR LOCK RELEASE MOTOR ASSEMBLY RH	*8	DOOR LOCK RELEASE MOTOR ASSEMBLY LH
*9	BACK DOOR LOCK ASSEMBLY WITH COURTESY LAMP SWITCH - DOOR LOCK MOTOR - BACK DOOR COURTESY SWITCH	*10	MULTIPLEX NETWORK DOOR ECU
*11	BACK DOOR OPENER SWITCH ASSEMBLY	-	-

System Diagram

SYSTEM DIAGRAM

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the power door lock control system.
*: Use the GTS.

PROCEDURE

1.	Toyota Prius Vehicle BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS CHECK

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:

What	Toyota Prius Vehicle model, system name
When	Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time
Where	Whether the problem occurs at a specific location
Under what conditions?	Whether the doors were locked or unlocked, whether the ignition switch was ON, whether the hybrid Toyota Prius vehicle control system has started.
How did it happen?	Problem symptoms

3.	READ AND SAVE Toyota Prius Vehicle CONTROL HISTORY (ROB)

NOTICE:

If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before vehicle control history (RoB) has been read and saved, the vehicle control history (RoB) information could be lost.
The Toyota Prius vehicle control history (RoB) function uses the current system time of the GTS and the time counter inside the controlling ECU to calculate the times shown in the vehicle control history (RoB). For this reason, before reading the vehicle control history (RoB), first make sure that the GTS system clock is accurately set to the current time.

(a) Read and save Toyota Prius vehicle control history (RoB) using the GTS.

Body Electrical > Main Body > Utility

Tester Display
Vehicle Control History (RoB)

PRE-CHECK

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

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(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.

5.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check for CAN communication system DTCs.

for HEV Model: Click here

for PHEV Model: Click here

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

GO TO CAN COMMUNICATION SYSTEM

for HEV Model: Click here

for PHEV Model: Click here

6.	CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the GTS, check for LIN communication system DTCs.

Click here

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

GO TO LIN COMMUNICATION SYSTEM

7.	CHECK FOR DTC*

(a) Check for DTCs.

Body Electrical > Main Body > Trouble Codes

Result	Proceed to
DTC is not output	A
DTC B124300 is output	B
DTC B231200 is output	C

GO TO DIAGNOSTIC TROUBLE CODE CHART

GO TO POWER WINDOW CONTROL SYSTEM

8.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table (Fault can be simulated)	A
Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)	B
Fault is listed in Problem Symptoms Table	C

CHECK Toyota Prius Vehicle CONTROL HISTORY (RoB)

GO TO STEP 10

9.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

(d) Inspection

10.	REPAIR OR REPLACE

11.	CONFIRMATION TEST

END

Operation Check

OPERATION CHECK

CHECK CUSTOMIZE PARAMETERS

NOTICE:

The operation check below is based on the non-customized initial condition of the vehicle.

Click here

CHECK BASIC FUNCTIONS

(a) Check that all of the doors lock when the lock switch of the door control switch is pressed.

(b) Check that all of the doors unlock when the unlock switch of the door control switch is pressed.

(d) Check that only the driver door unlocks when the driver door lock cylinder is turned to unlock once using the mechanical key and all doors unlock when it is turned to unlock again.*1

(e) Check that all doors unlock when the driver door key cylinder is turned to unlock using the mechanical key.*2

*1: Customize item "Unlock Key Twice Function" is set to "Enable".
*2: Customize item "Unlock Key Twice Function" is set to "Disable".

CHECK THE KEY LOCK-IN PREVENTION FUNCTION

NOTICE:

In order to prevent the key from being locked in the Toyota Prius vehicle, the following inspection should be performed with the driver door window open.

(a) Turn the ignition switch to ON or ACC.

(b) With the driver door open, check that all of the doors unlock immediately after the door lock knob for the driver door is pressed.

(c) With the driver door open, check that all of the doors unlock immediately after the lock switch of the door control switch is pressed.

(d) With the driver door open, press the driver door lock knob and hold it for 2 seconds or more, then close the driver door and check that all of the doors unlock.

CHECK THE SECURITY FUNCTION OF THE DOOR LOCK CONTROL SYSTEM

(a) Close all of the doors and leave the driver door window open so that the door control switch can be operated from outside the Toyota Prius vehicle. (Step 1)

(b) Open the driver door and remove the key from the vehicle. With the door still open, lock the door using the door lock knob. Close the driver door. Then, check that the doors do not unlock when the unlock switch of the door control switch is pressed from outside the vehicle.

(c) Starting from Step 1, with the key outside the Toyota Prius vehicle, close and lock the driver door using the mechanical key. Then, check that the doors do not unlock when the unlock switch of the door control switch is pressed from outside the vehicle.

(d) Starting from Step 1, with the key outside the vehicle, close and lock the driver door using wireless key operation or entry operation. Then, check that the doors do not unlock when the unlock switch of the door control switch is pressed from outside the Toyota Prius vehicle.

HINT:

Check that the security function of the door lock control system is canceled under the following conditions:

The ignition switch is turned to ON.
The driver door is unlocked using the key.
The unlock switch of the door control switch is pressed after the door lock knob is unlocked manually.
The doors are unlocked by wireless operation.
The doors are unlocked by entry operation.

HINT:

The "Unlock Key Twice Function" can be customized. Make sure that this function is "Enable" before performing.

CHECK THE KEY-LINKED 2-STEP UNLOCK FUNCTION

(a) Lock all doors.

(b) Check that only the driver door unlocks when the driver door lock cylinder is turned to unlock once using the key and all of the doors unlock when it is turned to unlock again.

HINT:

The "Automatic Door Lock Setting" can be customized. Make sure that this function is "Link Shift" before performing.

CHECK THE SHIFT LINKED AUTOMATIC DOOR LOCK FUNCTION (w/ Shift Linked Automatic Door Lock Function)

(a) With the shift lever in P and the ignition switch ON, check that all doors lock automatically when the shift lever is moved to any position other than P.

HINT:

The "Automatic Door Lock Setting" can be customized. Make sure that this function is "Link Speed" before performing.

CHECK THE SPEED-SENSITIVE AUTOMATIC DOOR LOCK FUNCTION (w/ Speed-sensitive Automatic Door Lock Function)

(a) When any door is unlocked and the Toyota Prius vehicle is driven at approximately 20 km/h (12 mph) or more, check that all of the doors lock automatically.

HINT:

The "Automatic Door Unlock Setting" can be customized. Make sure that this function is "Link Shift" before performing.

CHECK THE SHIFT LINKED AUTOMATIC DOOR UNLOCK FUNCTION (w/ Shift Linked Automatic Door Unlock Function)

(a) With the shift lever in any position other than P and the ignition switch ON, check that all doors unlock automatically when the shift lever is moved to P.

HINT:

The "Automatic Door Unlock Setting" can be customized. Make sure that this function is "Link D-Door" before performing.

CHECK THE DRIVER DOOR-LINKED AUTOMATIC DOOR UNLOCK FUNCTION (w/ Driver Door-linked Automatic Door Unlock Function)

(a) With the driver door closed, turn the ignition switch from ON to off, open the driver door within approximately 45 seconds, and confirm that all doors automatically unlock.

CHECK POWER BACK DOOR CLOSE AND LOCK FUNCTION (w/ Power Back Door System)

Click here

CHECK ILLUMINATED ENTRY FUNCTION

Click here

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE POWER DOOR LOCK CONTROL SYSTEM

NOTICE:

When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubleshooting a function, first make sure that the function is set to the default setting.

HINT:

The following items can be customized.

(a) Customizing with the GTS

(1) Connect the GTS to the DLC3.

(2) Turn the ignition switch to ON.

(3) Turn the GTS on.

(4) Enter the following menus: Customize Setting / Door Lock.

(5) Select the setting by referring to the table below.

Door Lock

Tester Display	Description	Default	Setting	ECU
Unlock Key Twice Function	Function that unlocks only the driver door when the driver door key cylinder is turned to unlock once, and unlocks all doors when it is turned to unlock twice. For the OFF setting, turning it once unlocks all doors.	Disable/Enable*5	$00:Disable,$01:Enable	Main body ECU (Multiplex network body ECU)
Automatic Door Lock Setting	Link Shift: Function that locks all doors when the shift lever is moved out of P, with the ignition switch ON and all doors closed1 Link Speed: Function that locks all of the doors when the Toyota Prius vehicle speed reaches a certain level2	Link Shift	$00:OFF,$01:Link Shift,$02:Link Speed	Main body ECU (Multiplex network body ECU)
Automatic Door Unlock Setting	Link D-Door: Function that unlocks the other doors when the driver door is opened within approximately 45 seconds of the ignition switch being turned off3 Link Shift: Function that unlocks all doors when the shift lever is moved to P from any position other than P with the ignition switch ON4	Link Shift	$00:OFF,$01:Link D-Door,$02:Link Shift	Main body ECU (Multiplex network body ECU)

*1: w/ Shift Linked Automatic Door Lock Function
*2: w/ Speed-sensitive Automatic Door Lock Function
*3: w/ Driver Door-linked Automatic Door Unlock Function
*4: w/ Shift Linked Automatic Door Unlock Function
*5: Default setting differs depending on the country.

(b) Customizing with the Multi-display

(1) Turn the ignition switch to ON.

(2) Enter the following menus: Settings / Toyota Prius Vehicle customize / Door control

(3) Select the setting by referring to the table below.

Display	Description	Default	Setting	Relevant ECU
Auto lock	By Shift from P: Function that locks all doors when the shift lever is moved out of P, with the ignition switch ON and all doors closed1 By Speed: Function that locks all of the doors when the Toyota Prius vehicle speed reaches a certain level2	By shift from park	By speed, By shift from park or Off	Main body ECU (Multiplex network body ECU)
Auto unlock	By Driver Door: Function that unlocks the other doors when the driver door is opened within approximately 45 seconds of the ignition switch being turned off3 By Shift to P: Function that unlocks all doors when the shift lever is moved to P from any position other than P with the ignition switch ON4	By shift to park	By shift to park, By driver door or Off	Main body ECU (Multiplex network body ECU)

*1: w/ Shift Linked Automatic Door Lock Function
*2: w/ Speed-sensitive Automatic Door Lock Function
*3: w/ Driver Door-linked Automatic Door Unlock Function
*4: w/ Shift Linked Automatic Door Unlock Function

Initialization

INITIALIZATION

BACK DOOR LOCK

(a) When the auxiliary battery is reconnected:

If the back door is locked and therefore cannot be opened, it is necessary to unlock the back door using the door control switch or electrical key transmitter sub-assembly switch.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Power Door Lock Control System

Symptom	Suspected Area	Link
Only driver door LOCK functions do not operate	Front door lock with motor assembly LH
	Wire harness or connector	-
	Power distribution box assembly	-
Only driver door UNLOCK functions do not operate	Front door lock with motor assembly LH
	Wire harness or connector	-
	Main body ECU (Multiplex network body ECU)	-
	Power distribution box assembly	-
Only front passenger door LOCK/UNLOCK functions do not operate	Front door lock with motor assembly RH
	Wire harness or connector	-
	Power distribution box assembly	-
Only rear door LH LOCK/UNLOCK functions do not operate	Rear door lock with motor assembly LH
	Wire harness or connector	-
	Power distribution box assembly	-
Only rear door LH unlatch functions do not operate	Door lock release motor assembly LH
	Rear door outside handle assembly LH (rear door open switch)
	Wire harness or connector	-
	Main body ECU (Multiplex network body ECU)	-
Only rear door RH LOCK/UNLOCK functions do not operate	Rear door lock with motor assembly RH
	Wire harness or connector	-
	Power distribution box assembly	-
Only rear door RH unlatch functions do not operate	Door lock release motor assembly RH
	Rear door outside handle assembly RH (rear door open switch)
	Wire harness or connector	-
	Main body ECU (Multiplex network body ECU)	-
All doors LOCK/UNLOCK functions do not operate via door key cylinder	Main body ECU (Multiplex network body ECU)
	Front door lock with motor assembly LH
	Wire harness or connector
All doors LOCK/UNLOCK functions do not operate via master switch	LIN communication system	-
	Multiplex network master switch assembly	-
	Main body ECU (Multiplex network body ECU)	-
All doors LOCK/UNLOCK functions do not operate via multiplex network master switch assembly and door key cylinder	Power distribution box assembly	-
	Main body ECU (Multiplex network body ECU)	-
All doors LOCK/UNLOCK functions do not operate via door control switch*3	Main body ECU (Multiplex network body ECU)
	Door control switch assembly
	Wire harness or connector
	Power distribution box assembly
Speed-sensitive automatic door lock function does not operate (meter/gauge system operates normally)*6	CAN communication system	for HEV Model: for PHEV Model:
	Main body ECU (Multiplex network body ECU)	-
Shift-linked automatic door lock/unlock functions do not operate (hybrid transaxle system operates normally)*6	CAN communication system	for HEV Model: for PHEV Model:
	Main body ECU (Multiplex network body ECU)	-
	Hybrid Toyota Prius vehicle control ECU	-
Only back door cannot be opened*4	Power Back Door System
Only back door cannot be opened*4	Check customize setting (Unlock Key Twice Function "Disable")
Only back door cannot be opened*5	Back door lock with courtesy light switch assembly
	Wire harness or connector	-
	Power distribution box assembly	-
	Main body ECU (Multiplex network body ECU)	-
Key lock-in prevention function does not operate	Front door lock with motor assembly LH
	Front door lock with motor assembly RH
	Rear door lock with motor assembly LH
	Rear door lock with motor assembly RH
	Main body ECU (Multiplex network body ECU)	-
	Power distribution box assembly	-
	Wire harness or connector	-
Lock operation continues even after doors have been locked*1	Front door lock with motor assembly LH
	Front door lock with motor assembly RH
	Rear door lock with motor assembly LH
	Rear door lock with motor assembly RH
	Wire harness or connector	-
	Power distribution box assembly	-
	Main body ECU (Multiplex network body ECU)	-
Only remote door LOCK/UNLOCK functions do not operate (power door lock operation is normally)*2	Telematics system

HINT:

*1: When the door unlock detection switch detects an unlock position signal after a door lock operation has been performed, a door lock operation will be performed 3 times.
*2: for Remote Connect Compatible Type
*3: w/ Door Control Switch
*4: w/ Power Back Door System
*5: w/o Power Back Door System
*6: w/ Automatic Door Lock/unlock Function

Terminals Of Ecu

TERMINALS OF ECU

CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

(b) Reconnect the power distribution box assembly connectors.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
z1-13 (GND1) - Body ground	Ground	Always	Below 1 Ω
z1-14 (GND2) - Body ground	Ground	Always	Below 1 Ω
z1-26 (BECU) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
z1-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch off	Below 1 V
z1-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch ON	11 to 14 V

(d) Install the main body ECU (multiplex network body ECU) to power distribution box assembly.

Click here

(e) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
R17-3 (FLCY) - Body ground	Front door courtesy light switch assembly (LH) input	Front door LH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
R17-5 (FRCY) - Body ground	Front door courtesy light switch assembly (RH) input	Front door RH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
R17-28 (LCTY) - Body ground	Rear door courtesy light switch assembly (LH) input	Rear door LH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
R17-1 (RCTY) - Body ground	Rear door courtesy light switch assembly (RH) input	Rear door RH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
R17-2 (BCTY) - Body ground	Back door courtesy light switch input	Back door open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
K17-9 (LSFL) - Body ground	Front door LH unlock detection switch input	Front door LH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
K17-3 (LSFR) - Body ground	Front door RH unlock detection switch input	Front door RH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
K17-10 (LSWL) - Body ground	Rear door LH unlock detection switch input	Rear door LH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
K16-23 (LSWR) - Body ground	Rear door RH unlock detection switch input	Rear door RH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*3
R17-36 (ACT-) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
R17-37 (ACT-) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
R17-40 (ACT ) - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
R17-41 (ACT ) - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
K15-18 (BSR1) - Body ground	Rear door outside handle assembly RH (rear door open switch) input	Rear door outside handle assembly RH (rear door open switch) off → on	Below 1 V → 11 to 14 V → Below 1 V
K16-4 (BSR2) - Body ground	Door lock release motor assembly RH output	Rear door outside handle assembly RH (rear door open switch) off → on	Below 1 V → 11 to 14 V → Below 1 V
K15-12 (BSL1) - Body ground	Rear door outside handle assembly LH (rear door open switch) input	Rear door outside handle assembly LH (rear door open switch) off → on	Below 1 V → 11 to 14 V → Below 1 V
K16-3 (BSL2) - Body ground	Door lock release motor assembly LH output	Rear door outside handle assembly LH (rear door open switch) off → on	Below 1 V → 11 to 14 V → Below 1 V
K20-20 (ACTD) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
R17-42 (TR ) - Body ground*1	Back doorlock motor unlock drive output	Back door closed → open	Below 1 V → 11 to 14 V → Below 1 V
K17-4 (UL3) - Body ground	Driver door key-linked unlock input	Driver door key cylinder in neutral position → on (unlock)	Pulse generation → Below 1 V
K17-28 (L2) - Body ground	Driver door key-linked lock input	Driver door key cylinder in neutral position → on (lock)	Pulse generation → Below 1 V
K16-6 (L1) - Body ground*2	Door control switch assembly input	Door control switch assembly off → on (lock)	Pulse generation → Below 1 V
K16-7 (UL1) - Body ground*2	Door control switch assembly input	Door control switch assembly off → on (unlock)	Pulse generation → Below 1 V
K21-43 (GSW) - Body ground	Airbag ECU signal (collision detection signal)	Ignition switch ON with airbag ECU assembly connector disconnected	4.3 to 5.5 V

*1: w/o Power Back Door System
*2: w/ Door Control Switch
*3: Differs depending on the Toyota Prius vehicle model

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the K13 certification ECU (smart key ECU assembly) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
K13-6 ( B) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
K13-29 (E) - Body ground	Ground	Always	Below 1 Ω

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
R59-16 (TSW5) - K13-29 (E)	Back door opener switch input	Back door opener switch (open switch) off → on	Pulse generation → Below 1 V

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

(a) Connect the GTS to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Body Electrical / Main Body or Master Switch / Data List.

(e) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Manual Door Lock Switch (D/P Door)	Door control switch assembly lock signal	OFF or ON	OFF: Lock switch of door control switch assembly not pushed ON: Lock switch of door control switch assembly pushed	w/ Door Control Switch
Door Lock Switch Status by a Mechanical Key (D/P Door)	Driver door key-linked lock / unlock switch lock signal	OFF or ON	OFF: Driver door key cylinder not turned to lock position ON: Driver door key cylinder turned to lock position	-
Manual Door Unlock Switch (D/P Door)	Door control switch assembly unlock signal	OFF or ON	OFF: Unlock switch of door control switch assembly not pushed ON: Unlock switch of door control switch assembly pushed	w/ Door Control Switch
Door Unlock Switch Status by a Mechanical Key (D Door)	Driver door key-linked lock / unlock switch lock signal	OFF or ON	OFF: Driver door key cylinder not turned to unlock position ON: Driver door key cylinder turned to unlock position	-
FR Door Lock Position Switch Status	Front door RH unlock detection switch signal	Lock or Unlock	Lock: Front door RH locked Unlock: Front door RH Unlocked	-
FL Door Lock Position Switch Status	Front door LH unlock detection switch signal	Lock or Unlock	Lock: Front door LH locked Unlock: Front door LH Unlocked	-
RR Door Lock Position Switch Status	Rear door RH unlock detection switch signal	Lock or Unlock	Lock: Rear door RH locked Unlock: Rear door RH Unlocked	-
RL Door Lock Position Switch Status	Rear door LH unlock detection switch signal	Lock or Unlock	Lock: Rear door LH locked Unlock: Rear door LH Unlocked	-
Back Door Lock Position Status	Back door lock signal	Lock or Unlock	Lock: Back door locked Unlock: Back door unlocked	-
FR Door Courtesy Switch Status	Front door courtesy light switch (RH) signal	Close or Open	Close: Front door RH closed Open: Front door RH open	-
FL Door Courtesy Switch Status	Front door courtesy light switch (LH) signal	Close or Open	Close: Front door LH closed Open: Front door LH open	-
RR Door Courtesy Switch Status	Rear door courtesy light switch (RH) signal	Close or Open	Close: Rear door RH closed Open: Rear door RH open	-
RL Door Courtesy Switch Status	Rear door courtesy light switch (LH) signal	Close or Open	Close: Rear door LH closed Open: Rear door LH open	-
Back Door Courtesy Switch Status	Back door courtesy light switch signal	Close or Open	Close: Back door closed Open: Back door open	-
RR Door Opener Switch	Rear door open switch RH signal	OFF or ON	OFF: Rear door open switch RH not pushed ON: Rear door open switch RH pushed	-
RL Door Opener Switch	Rear door open switch LH signal	OFF or ON	OFF: Rear door open switch LH not pushed ON: Rear door open switch LH pushed	-
IGR Power	Ignition switch ON signal	OFF or ON	OFF: Ignition switch off or ACC ON: Ignition switch ON	-
Unlock Key Twice Function	Key-linked 2-step unlock function	OFF or ON	Customize setting displayed	-
Automatic Door Lock Setting	Automatic door lock function	OFF, Link Shift or Link Speed	Customize setting displayed	w/ Automatic Door Lock Function
Automatic Door Unlock Setting	Automatic door unlock function	OFF, Link D-Door or Link Shift	Customize setting displayed	w/ Automatic Door Unlock Function

ACTIVE TEST

HINT:

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.

(a) Connect the GTS to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Body Electrical / Main Body / Active Test.

(e) Perform the Active Test according to the display on the GTS.

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Door Lock	Door lock motor	OFF/ON	-
Door Unlock	Door lock motor	OFF/ON	-
D-Door Unlock	Driver door lock motor	OFF/ON	-
Collision Door Lock Release	Operate door lock motor	OFF/ON	-
Trunk Lid / Back Door Open	Back door lock motor	OFF/ON	w/o Power Back Door System

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Power Door Lock Control System

DTC No.	Detection Item	DTC Output from	Priority	Link
B124300	Impact Detection Sensor Circuit Malfunction	Main Body	A

VEHICLE CONTROL HISTORY (RoB)

VEHICLE CONTROL HISTORY (RoB)

NOTICE:

If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before vehicle control history has been read out and saved, the vehicle control history information could be lost.
The function "Toyota Prius Vehicle Control History (RoB)" uses the current system time setting inside the GTS and the time counter inside the controlling ECU to calculate the timings shown in the vehicle control history. For this reason, before reading out the vehicle control history, first make sure that the GTS system clock is accurately set to the current time.
The time counter in the control ECU may deviate by up to /- 10% due to the characteristics of the time counter.
The time counter in the control ECU is reset approximately 34 days before the "Current" value due to the characteristics of the time counter. Therefore, the time information stored before the 34th day may not be accurately displayed.

Toyota Prius Vehicle Control History (RoB)

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

Body Electrical > Main Body > Utility

Tester Display
Toyota Prius Vehicle Control History (RoB)

Code	Item	Item Description	Note
X2300	Door Lock/Unlock	Stores the reason for a door lock/unlock operation that occurred	When doors are locked or unlocked, this stores the method by which operation was performed.
X2301	Automatic Door Lock Inoperative	Stores the reason for auto lock non-operation when collision sensor detection or malfunction occurs	Stores the reason for the automatic door lock function becoming inoperative when a collision is detected.
X2302	Automatic Door Lock Switching	Stores setting value when auto lock/unlock (speed/shift/door open) setting changes	Stores operating history for auto lock switching. For Toyota Prius vehicles with navigation system, stores switching by navigation system; for vehicles without navigation system, stores switching due to shift information and manual lock/unlock switch operation.

HINT:

Some items are not displayed depending on the type of vehicle.

According to the display on the GTS, read and save the operation history.

Item List
Manual Lock
Door Lock (Voice)
Door Key Linked Lock
Wireless Lock
Wireless Auto Lock (30s)
Wireless Double Lock Set
Auto Entry Lock
Auto Entry Double Lock Set
Auto Entry Lock (30s)
Auto Lock by remote parking
Power Back Door Lock signal by Back Door Control Switch
Walk Away PBD Close & Lock
RH PSD Close & Lock
LH PSD Close & Lock
Security Forced Lock
Shift Linked Auto Lock
Auto Lock Switch Answerback Lock
Door Lock by Active Test
Remote Door Lock
Door Lock by Pre A/C
Automatics Relock (Remote)
Manual Unlock
Door Unlock (Voice)
D-Seat Key Linked Unlock (Twice)
Door Key Linked Unlock
Wireless Unlock (Twice)
Wireless Unlock
Auto Entry Unlock
Auto Entry Preparation Unlock
Unlock by kick Sensor Input
Key in Toyota Prius Vehicle Detected Unlock
Unlock by Emblem Sensor Input
Key Detected Unlock 1
Key Detected Unlock 2
Key Detected Unlock 3
Urgent Stop Support Unlock
Shift Linked Auto Unlock
Door Open/Close Linked Auto Unlock
Shock Detection Unlock
Door Unlock by Active Test
Auto Lock Switch Answerback Unlock
Remote Door Unlock
One Motion PBD Open/Stop judgment during the closing operation
One Motion PSD Open/Stop judgment during the closing operation
Fail Safe Unset
Shock Sensor Malfunction
Shock Sensor Detected
Changed the Automatics Door Lock Setting
Changed the Shift Linked Automatic Door Lock Setting
Changed the Automatic Door Unlock Setting When D-Door Open
Changed the Shift Linked Automatic Door Unlock Setting

(b) Following the instructions on the screen, save the Toyota Prius vehicle control history.

HINT:

Some items are not displayed depending on the type of vehicle.

Symptom Simulation

Click here

Impact Detection Sensor Circuit Malfunction (B124300)

DESCRIPTION

If the collision door lock release function does not operate normally, or an open or short in the GSW input circuit of the main body ECU (multiplex network body ECU) is detected, DTC B124300 will be stored.

HINT:

If DTC B124300 is stored, the automatic door lock function, and collision door lock release function will be prohibited.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B124300	Impact Detection Sensor Circuit Malfunction	A malfunction occurs in the GSW input circuit of the main body ECU (multiplex network body ECU).	Main body ECU (multiplex network body ECU) Power distribution box assembly Airbag ECU assembly Wire harness or connector	Main Body	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When DTC B124300 is stored, operation of the speed-sensitive automatic door lock function*1, shift linked automatic door lock function*2 and collision door lock release is prohibited.
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
- *1: w/ Speed-sensitive Automatic Door Lock Function
  *2: w/ Shift Linked Automatic Door Lock Function

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Main Body > Clear DTCs

2.	CHECK DTC OUTPUT

(a) Recheck for DTCs.

Body Electrical > Main Body > Trouble Codes

Result	Proceed to
B124300 is not output	A
B124300 is output	B

USE SIMULATION METHOD TO CHECK

3.	CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (GSW VOLTAGE)

Pre-procedure1

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

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

NOTICE:

Turning the ignition switch to ON with the airbag ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

(b) Disconnect the K1 airbag ECU assembly connector.

Post-procedure1

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

Standard Voltage:

Click Location & Routing(K1) Click Connector(K1)

Tester Connection	Condition	Specified Condition	Result
K1-25 (GSW) - Body ground	Ignition switch ON	4.3 to 5.5 V	V

Result:

Proceed to
OK
NG

*a	Front view of wire harness connector (to Airbag ECU Assembly)

Procedure1

(e) None

GO TO STEP 7

4.	REPLACE AIR BAG ECU ASSEMBLY

Pre-procedure1

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

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

Procedure1

(b) Replace the airbag ECU assembly.

HINT:

Click here

Post-procedure1

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Main Body > Clear DTCs

6.	CHECK DTC OUTPUT

(a) Recheck for DTCs.

Body Electrical > Main Body > Trouble Codes

Result	Proceed to
B124300 is not output	A
B124300 is output	B

END (AIRBAG ECU ASSEMBLY WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

7.	CHECK HARNESS AND CONNECTOR (AIRBAG ECU ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

Pre-procedure1

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

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(b) Disconnect the K21 power distribution box assembly connector.

Procedure1

Standard Resistance:

Click Location & Routing(K1,K21) Click Connector(K1) Click Connector(K21)

Tester Connection	Condition	Specified Condition
K1-25 (GSW) - K21-43	Always	Below 1 Ω
K1-25 (GSW) or K21-43 - Other terminals and body ground	Always	10 kΩ or higher

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	INSPECT POWER DISTRIBUTION BOX ASSEMBLY

Pre-procedure1

(a) Remove the power distribution box assembly.

HINT:

Click here

(b) Remove the main body ECU (multiplex network body ECU).

Component without harness connected

(Power Distribution Box Assembly)

Procedure1

Standard Resistance:

Click Location & Routing(z1,K21) Click Connector(z1) Click Connector(K21)

Tester Connection	Condition	Specified Condition
z1-20 (GSW) - K21-43	Always	Below 1 Ω

Post-procedure1

(d) None

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder

DESCRIPTION

The main body ECU (multiplex network body ECU) receives driver door key cylinder lock or unlock switch signals from the front door lock with motor assembly. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here

PROCEDURE

1.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Door Lock Switch Status by a Mechanical Key (D/P Door)

Driver door key-linked lock / unlock switch lock signal

OFF or ON

OFF: Driver door key cylinder not turned to lock position

ON: Driver door key cylinder turned to lock position

Door Unlock Switch Status by a Mechanical Key (D Door)

Driver door key-linked lock / unlock switch lock signal

OFF or ON

OFF: Driver door key cylinder not turned to unlock position

ON: Driver door key cylinder turned to unlock position

Body Electrical > Main Body > Data List

Tester Display
Door Lock Switch Status by a Mechanical Key (D/P Door)
Door Unlock Switch Status by a Mechanical Key (D Door)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

2.	INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

Click here

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

3.	CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the K17 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Click Location & Routing(O2,K17) Click Connector(O2) Click Connector(K17)

Tester Connection	Condition	Specified Condition
O2-7 (L) - K17-28 (L2)	Always	Below 1 Ω
O2-6 (UL) - K17-4 (UL3)	Always	Below 1 Ω
O2-10 (E) - Body ground	Always	Below 1 Ω
O2-7 (L) or K17-28 (L2) - Other terminals and body ground	Always	10 kΩ or higher
O2-6 (UL) or K17-4 (UL3) - Other terminals and body ground	Always	10 kΩ or higher

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the door control switch assembly and activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here

PROCEDURE

1.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Manual Door Lock Switch (D/P Door)

Door control switch assembly lock signal

OFF or ON

OFF: Lock switch of door control switch assembly not pushed

ON: Lock switch of door control switch assembly pushed

Manual Door Unlock Switch (D/P Door)

Door control switch assembly unlock signal

OFF or ON

OFF: Unlock switch of door control switch assembly not pushed

ON: Unlock switch of door control switch assembly pushed

Body Electrical > Main Body > Data List

Tester Display
Manual Door Lock Switch (D/P Door)
Manual Door Unlock Switch (D/P Door)

OK:

The GTS indicates ON or OFF according to the switch operation shown in the table.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

2.	INSPECT DOOR CONTROL SWITCH ASSEMBLY

Click here

REPLACE DOOR CONTROL SWITCH ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the K16 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Click Location & Routing(N10,K16) Click Connector(N10) Click Connector(K16)

Tester Connection	Condition	Specified Condition
N10-2 (UL) - K16-7 (UL1)	Always	Below 1 Ω
N10-4 (L) - K16-6 (L1)	Always	Below 1 Ω
N10-5 (E) - Body ground	Always	Below 1 Ω
N10-2 (UL) or K16-7 (UL1) - Other terminals and body ground	Always	10 kΩ or higher
N10-4 (L) or K16-6 (L1) - Other terminals and body ground	Always	10 kΩ or higher

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

Only Back Door cannot be Opened

DESCRIPTION

The main body ECU (multiplex network body ECU) receives signals from the back door opener switch assembly. Then, the main body ECU (multiplex network body ECU) activates the back door lock motor.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When using the GTS with the Toyota Prius vehicle ignition switch off, connect the GTS to the DLC3 and turn a door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.
Inspect the fuses for circuits related to this system before performing the following procedure.
The power door lock control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.
Click here
If the main body ECU (multiplex network body ECU) is replaced, refer to registration.
Click here

PROCEDURE

1.	PERFORM ACTIVE TEST USING GTS (Trunk Lid / Back Door Open)

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Trunk Lid / Back Door Open	Back door lock motor	OFF or ON	-

Body Electrical > Main Body > Active Test

Tester Display
Trunk Lid / Back Door Open

OK:

The back door lock with courtesy light switch assembly unlatches when ON is selected.

GO TO SMART KEY SYSTEM (for Entry Function)

2.	INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

Click here

REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

(a) Disconnect the W20 back door lock with courtesy light switch assembly connector.

(b) Disconnect the R17 power distribution box assembly connector.

Standard Resistance:

Click Location & Routing(W20,R17) Click Connector(W20) Click Connector(R17)

Tester Connection	Condition	Specified Condition
W20-1 (ACT ) - R17-42	Always	Below 1 Ω
W20-3 (D ) - R17-2	Always	Below 1 Ω
W20-2 (ACT-) - Body ground	Always	Below 1 Ω
W20-1 (ACT ) or R17-42 - Other terminals and body ground	Always	10 kΩ or higher
W20-3 (D ) or R17-2 - Other terminals and body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	INSPECT POWER DISTRIBUTION BOX ASSEMBLY

(a) Remove the power distribution box assembly.

Click here

(b) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

Component without harness connected

(Power Distribution Box Assembly)

Standard Resistance:

Click Location & Routing(z1,R17) Click Connector(z1) Click Connector(R17)

Tester Connection	Condition	Specified Condition
z1-19 (BCTY) - R17-2	Always	Below 1 Ω

Click here

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND)

(a) Disconnect the power distribution box assembly connectors.

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

Standard Voltage:

Click Location & Routing(A15) Click Connector(A15)

Tester Connection	Condition	Specified Condition
A15-1 - Body ground	Always	11 to 14 V

Standard Resistance:

Click Location & Routing(K20,K21) Click Connector(K20) Click Connector(K21)

Tester Connection	Condition	Specified Condition
K20-36 - Body ground	Always	Below 1 Ω
K21-41 - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK POWER DISTRIBUTION BOX ASSEMBLY (DOOR BACK RELAY)

(a) Remove the power distribution box assembly.

Click here

(b) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

Component without harness connected

(Power Distribution Box Assembly)

Standard Resistance:

Click Location & Routing(R17) Click Connector(R17)

Tester Connection	Condition	Specified Condition
R17-42 - Body ground	Auxiliary battery voltage applied to terminals A15-1 and z1-5 (TR )	10 kΩ or higher
R17-42 - Body ground	Auxiliary battery voltage not applied to terminals A15-1 and z1-5 (TR )	Below 1 Ω