Diagnosis Procedure
WARNING: This page is about a different car, the 2020 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 main power window and door lock/unlock switch connector.
- Turn ignition switch ON.
- Check voltage between main power window and door lock/unlock switch harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Main power window and door lock/unlock 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 main power window and door lock/unlock switch harness connector.
BCM
Main power window and door lock/unlock 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 main power window and door lock/unlock switch harness connector and ground.
Main power window and door lock/unlock 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.