Check Power Window Main Switch Power Supply Circuit

POWER WINDOW SYSTEM


Check power Window Main Switch Power Supply Circuit

1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between power window main switch connector and ground.










OK or NG
OK - GO TO 2.
NG - GO TO 3.
2.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power window main switch connector.
3. Check continuity between power window main switch connector and ground.










OK or NG
OK - Power window main switch power supply and ground circuit are OK.
NG - Repair or replace harness.
3.CHECK HARNESS CONTINUITY
1. Disconnect BCM and power window main switch connector.
2. Check continuity between BCM connector and power window main switch connector.










3. Check continuity between BCM connector and ground.





OK or NG
OK - GO TO 4.
NG - Repair or replace harness.
4.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM connector and ground.










OK or NG
OK - Check condition of harness and connector.
NG - Replace BCM.