Diagnosis Procedure

POWER WINDOW SERIAL LINK

POWER WINDOW MAIN SWITCH : Diagnosis Procedure

Regarding Wiring Diagram information, refer to {LINK_TO:0000000007987861}, "Wiring Diagram - With Left And Right Front Power
Window Anti-Pinch".

Power Window Serial Link Check


1. CHECK POWER WINDOW SWITCH OUTPUT SIGNAL

1.Remove Intelligent Key, and close front door LH and RH.
2.Check signal between BCM connector and ground with oscilloscope when door lock and unlock switch (LH and RH) is turned to "LOCK" or "UNLOCK".
3.Check that signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch (LH and RH) is turned to "LOCK" or "UNLOCK".





Is the inspection result normal?
YES- Power window serial link is OK.
NO- GO TO 2.

2. CHECK POWER WINDOW SERIAL LINK CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect BCM and main power window and door lock/unlock switch.
3.Check continuity between BCM connector M18 and main power window and door lock/unlock switch connector D7.





4.Check continuity between BCM connector M18 and ground.





Is the inspection result normal?
YES- Replace main power window and door lock/unlock switch. Refer to "Removal and Installation" LH & RH Front Anti-Pinch. After that, refer to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement" LH & RH Front Anti-Pinch.
NO- Repair or replace harness or connectors.