Only Rear Door LH Lock / Unlock Functions Do Not Operate

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Only Rear Door LH LOCK / UNLOCK Functions do not Operate

Only Rear Door LH LOCK / UNLOCK Functions do not Operate

DESCRIPTION

The main body ECU in the driver side junction block receives lock / unlock switch signals and activates the door lock motor according to the signals.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (DOOR LOCK MOTOR)
(a) Select the Active Test, use the Techstream to generate a control command, and then check that the power door lock operates.
Main Body ECU:






OK:
Doors can lock / unlock.
NG -- REPLACE DRIVER SIDE JUNCTION BLOCK
OK -- Continue to next step.

2. INSPECT REAR DOOR LOCK LH (POSITION SWITCH)




(a) Measure the resistance of the position switch.
Standard resistance:






NG -- REPLACE REAR DOOR LOCK LH
OK -- Continue to next step.

3. INSPECT REAR DOOR LOCK LH (DOOR LOCK MOTOR)




(a) Apply battery voltage to the door lock and check operation of the door lock motor.
OK:






NG -- REPLACE REAR DOOR LOCK LH
OK -- Continue to next step.

4. CHECK WIRE HARNESS (MOTOR - DRIVE SIDE JUNCTION BLOCK, ECU AND BODY GROUND)




(a) Disconnect the D14 lock connector.
(b) Disconnect the B5 ECU connector.
(c) Disconnect the 1D junction block connector.
(d) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK