Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect power window main switch connector.
- Turn ignition switch ON.
- Check voltage between power window main switch harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Power window main switch
Connector
Terminal
D56
4
Ground
Battery voltage
9
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector.
- Check continuity between BCM harness connector and power window main switch harness connector.
BCM
Power window main switch
Continuity
Connector
Terminal
Connector
Terminal
M81
140
D56
9
Yes
141
4
- Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M81
140
No
141
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Repair or replace harness.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between power window main switch harness connector and ground.
Power window main switch
Ground
Continuity
Connector
Terminal
D56
7
Yes
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace harness.
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
Inspection End.