Diagnosis Procedure

POWER WINDOW SERIAL LINK

POWER WINDOW MAIN SWITCH : Diagnosis Procedure


1. CHECK POWER WINDOW SWITCH INPUT SIGNAL

1.Turn ignition switch ON.
2.Check signal between power window main switch harness connector and ground with oscilloscope.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 2.

2. CHECK POWER WINDOW SERIAL LINK SIGNAL

1.Turn ignition switch OFF.
2.Disconnect power window main switch connector.
3.Turn ignition switch ON.
4.Check voltage between power window main switch harness connector and ground.





Is the inspection result normal?
YES- Replace power window main switch. Service and Repair.
NO- GO TO 3.

3. CHECK POWER WINDOW SERIAL LINK CIRCUIT

1.Disconnect BCM connector and power window main switch 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- Replace BCM. Service and Repair.
NO- Repair or replace harness.

4. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
- INSPECTION END