Only Driver Door Lock / Unlock Functions Do Not Operate

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

Only Driver Door 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 door lock motor operates.
Main Body ECU:






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

2. INSPECT FRONT DOOR LOCK LH (DOOR LOCK AND UNLOCK SWITCH AND POSITION SWITCH)




(a) Measure the resistance of the door lock and unlock switch and position switch.
Standard resistance:

Door lock and unlock switch





Position switch:






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

3. INSPECT FRONT 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 FRONT DOOR LOCK LH
OK -- Continue to next step.

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




(a) Disconnect the D12 lock connector.
(b) Disconnect the B7 ECU connector.
(c) Disconnect the 1H 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