Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti Q50. 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 front power window switch (passenger side) harness connector and ground with oscilloscope.

(+)		(-)	Signal (Reference value)
Front power window switch (passenger side)
Connector	Terminal
D21	16	Ground	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace front power window switch (passenger side). Refer to POWER WINDOW MAIN SWITCH : Removal & Installation .

GO TO 2.

CHECK POWER WINDOW SERIAL LINK SIGNAL

Turn ignition switch OFF.
Disconnect front power window switch (passenger side) connector.
Turn ignition switch ON.

Check voltage between front power window switch (passenger side) harness connector and ground.

(+)		(-)	Voltage (V)
Front power window switch (passenger side)
Connector	Terminal
D21	16	Ground	9 - 16

Is the inspection result normal?

YES

Replace power window main switch. Refer to POWER WINDOW MAIN SWITCH : Removal & Installation .

GO TO 3.

CHECK POWER WINDOW SERIAL LINK CIRCUIT

Disconnect power window main switch connector.

Check continuity between power window main switch harness connector and front power window switch (passenger side) harness connector.

Power window main switch		Front power window switch (passenger side)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D8	13	D21	16	Existed

Check continuity between power window main switch harness connector and ground.

Power window main switch		Ground	Continuity
Connector	Terminal
D8	13		Not existed

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness.

CHECK INTERMITTENT INCIDENT
Refer to Inspection .

INSPECTION END