All Doors Lock / Unlock Functions Do Not Operate Via Master Switch

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: All Doors LOCK / UNLOCK Functions do not Operate Via Master Switch

All Doors LOCK / UNLOCK Functions do not Operate Via Master Switch

DESCRIPTION

The body ECU in the driver side junction block receives switch signals from the power window regulator master switch and activates the door lock motors on each door according to the signal.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (DOOR CONTROL SWITCH)
(a) Check the Data List for proper functioning of the door control switch.
Main Body ECU:






OK:
ON (door is locked/unlocked) appears on the screen.
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK
NG -- Continue to next step.

2. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (DOOR CONTROL SWITCH)




(a) Measure the resistance of the door control switch.
Standard resistance:






NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH
OK -- Continue to next step.

3. CHECK WIRE HARNESS (MASTER SWITCH - DRIVER SIDE JUNCTION BLOCK AND BODY GROUND)




(a) Disconnect the P17 switch connector.
(b) Disconnect the 1H junction block connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






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