All Doors Lock / Unlock Functions Do Not Operate Via Driver Side Door Key Cylinder

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: All Doors LOCK / UNLOCK Functions do not Operate Via Driver Side Door Key Cylinder

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

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (DOOR LOCK AND UNLOCK SWITCH)
(a) Check the Data List for proper functioning of the door lock and unlock switch.
Main Body ECU:






OK:
ON (door is locked/unlocked) appears on the screen.
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

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




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






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

3. CHECK WIRE HARNESS (MOTOR - 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 -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE