Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK POWER WINDOW SWITCH INPUT SIGNAL
- Turn ignition switch ON.
- Check signal between power window main switch harness connector and ground with oscilloscope.
(+) (-) Signal
(Reference value)Power window main switch Connector Terminal D56 13 Ground
Is the inspection result normal?
YES
GO TO STEP 4 .
NO
GO TO STEP 2 .
- CHECK POWER WINDOW SERIAL LINK SIGNAL
- 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 13 Ground Battery voltage
Is the inspection result normal?
YES
Replace power window main switch. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 3 .
- CHECK POWER WINDOW SERIAL LINK CIRCUIT
- Disconnect BCM connector and power window main switch connector.
- Check continuity between BCM harness connector and power window main switch harness connector.
BCM Power window main switch Continuity Connector Terminal Connector Terminal M19 54 D56 13 Yes
Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.
- CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .
Inspection End.