Diagnosis Procedure

CHECK ENCODER SIGNAL

Turn ignition switch ON.

Check signal between front power window switch (passenger side) harness connector and ground using oscilloscope.

(+)		(-)	Signal (Reference value)
Front power window switch (passenger side)
Connector	Terminal
D38	12	Ground	Refer to following signal
D38	15	Ground	Refer to following signal

Fig 1: Checking Signal Between Power Window Main Switch Harness Connector And Ground Using Oscilloscope

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace front power window switch (passenger side).

GO TO STEP 2 .

CHECK ENCODER SIGNAL CIRCUIT

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

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

Front power window switch (passenger side)		Front power window motor (passenger side)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D38	12	D40	5	Existed
D38	15	D40	3	Existed

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

Front power window switch (passenger side)		Ground	Continuity
Connector	Terminal
D38	12		Not existed
	15

Is the inspection result normal?

YES

GO TO STEP 3 .

Repair or replace harness.

CHECK ENCODER POWER SUPPLY CIRCUIT 1

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

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

(+)		(-)	Voltage (V) (Approx.)
Front power window motor (passenger side)
Connector	Terminal
D40	4	Ground	12

Is the inspection result normal?

YES

GO TO STEP 5 .

GO TO STEP 4 .

CHECK ENCODER POWER SUPPLY CIRCUIT 2

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

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

Front power window switch (passenger side)		Front power window motor (passenger side)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D38	4	D40	4	Existed

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

Front power window switch (passenger side)		Ground	Continuity
Connector	Terminal
D38	4		Not existed

Is the inspection result normal?

YES

Replace front power window switch (passenger side).

Repair or replace harness.

CHECK GROUND CIRCUIT 1

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

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

Front power window switch (passenger side)		Front power window motor (passenger side)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
D38	3	D40	6	Existed

Is the inspection result normal?

YES

GO TO STEP 6 .

Repair or replace harness.

CHECK GROUND CIRCUIT 2

Connect front power window switch (passenger side) connector.

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

Front power window switch (passenger side)		Ground	Continuity
Connector	Terminal
D38	3		Existed

Is the inspection result normal?

YES

Replace front power window motor (passenger side).

Replace front power window switch (passenger side).