Diagnosis Procedure

CHECK ENCODER 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
D54	12	Ground	Refer to following signal
	15

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 ENCODER SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect rear power window switch LH connector and rear power window motor LH connector.

Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.

Rear power window switch LH		Rear power window motor LH		Continuity
Connector	Terminal	Connector	Terminal
D54	12	D52	5	Existed
	15		6

Check continuity rear power window switch LH harness connector and ground.

Rear power window switch LH		Ground	Continuity
Connector	Terminal
D54	12		Not existed
	15

Is the inspection result normal?

YES

GO TO 3.

Repair or replace harness.

CHECK ENCODER POWER SUPPLY CIRCUIT 1

Connect rear power window switch LH connector.
Turn ignition switch ON.

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

(+)		(-)	Voltage (V) (Approx.)
Rear power window motor LH
Connector	Terminal
D52	2	Ground	12

Is the inspection result normal?

YES

GO TO 5.

GO TO 4.

CHECK ENCODER POWER SUPPLY CIRCUIT2

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

Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.

Rear power window switch LH		Rear power window motor LH		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D54	4	D52	2	Existed

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

Rear power window switch LH		Ground	Continuity
Connector	Terminal
D54	4		Not existed

Is the inspection result normal?

YES

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

Repair or replace harness.

CHECK GROUND CIRCUIT 1

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

Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.

Rear power window switch LH		Rear power window motor LH		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D54	3	D52	4	Existed

Is the inspection result normal?

YES

GO TO 6.

Repair or replace harness.

CHECK GROUND CIRCUIT 2

Connect rear power window switch LH connector.

Check continuity between rear power window switch LH connector and ground.

Rear power window switch LH		Ground	Continuity
Connector	Terminal
D54	3		Existed

Is the inspection result normal?

YES

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

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