Main Power Window and Door Lock/Unlock Switch Power Supply and Ground Circuit Inspection

POWER WINDOW SYSTEM


Main Power Window and Door Lock/Unlock Switch Power Supply and Ground Circuit Inspection

1.CHECK POWER SUPPLY CIRCUIT





1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D7 terminal 10, D8 terminal 19 and ground.





OK or NG
OK - GO TO 2.
NG - GO TO 3.
2.CHECK GROUND CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between main power window and door lock/unlock switch connector D8 terminal 17 and ground.





OK or NG
OK - Power supply and ground circuit are OK.
NG - Repair or replace harness.
3.CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT





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






4. Check continuity between BCM and ground.





OK or NG
OK - GO TO 4.
NG - Repair or replace harness.
4.CHECK BCM OUTPUT SIGNAL





1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 terminals 68, 69 and ground.





OK or NG
OK - Check the condition of the harness and the connector.
NG - Replace BCM. Programming and Relearning Service and Repair.