Diagnosis Procedure

POWER WINDOW SERIAL LINK

POWER WINDOW MAIN SWITCH : Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Electrical Diagrams.

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.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- Replace power window main switch. Refer to "Removal and Installation" Main Power Window and Door Lock/Unlock Switch.
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.





Is the inspection result normal?
YES- Replace BCM. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace harness.

4. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- Inspection End.