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 WINDOW SWITCH INPUT SIGNAL

Turn ignition switch ON.

Check signal between rear power window switch LH harness connector and ground with oscilloscope.

(+)		(-)	Signal (Reference value)
Rear power window switch LH
Connector	Terminal
D256	16	Ground	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace rear power window switch LH. Refer to Removal and Installation .

GO TO 2.

CHECK POWER WINDOW SERIAL LINK SIGNAL

Turn ignition switch OFF.
Disconnect rear power window switch LH connector.
Turn ignition switch ON.

Check voltage between rear power window switch LH harness connector and ground.

(+)		(-)	Voltage (Approx.)
Rear power window switch LH
Connector	Terminal
D256	16	Ground	Battery voltage

Is the inspection result normal?

YES

Replace main power window and lock/unlock switch. Refer to Removal and Installation .

GO TO 3.

CHECK POWER WINDOW SERIAL LINK CIRCUIT

Disconnect main power window and lock/unlock switch connector.

Check continuity between main power window and lock/unlock switch harness connector and rear power window switch LH harness connector.

Main power window and lock/unlock switch		Rear power window switch LH		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D56	13	D256	16	Yes

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness.

CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

Inspection End.