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 rear power window switch LH connector and rear power window switch RH connector.
- Turn ignition switch ON.
- Check voltage between rear power window switch harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Rear power window switch
Connector
Terminal
LH
D256
10
Ground
Battery voltage
RH
D356
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 rear power window switch harness connector.
BCM
Rear power window switch
Continuity
Connector
Terminal
Connector
Terminal
M81
141
LH
D256
10
Yes
RH
D356
- Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M81
141
No
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 rear power window switch harness connector and ground.
Rear power window switch
Ground
Continuity
Connector
Terminal
LH
D256
11
Yes
RH
D356
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace harness.
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
Inspection End.