Cube L4-1.8L (MR18DE) (2010)
1.CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect power window main switch connector.
3. Check signal between power window main switch harness connector and ground using oscilloscope.
Is the inspection result normal?
YES - GO TO 4.
NO - GO TO 2.
2.CHECK DOOR LOCK AND UNLOCK SWITCH CIRCUIT
1. Disconnect BCM connector and front power window switch (passenger side) connector.
2. Check continuity between BCM harness connector and power window main switch harness connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check signal between BCM harness connector and ground using oscilloscope.
Is the inspection result normal?
YES - GO TO 6.