Encoder Circuit Check Front LH (With Front and Rear Power Window Anti-pinch System)

CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between front power window motor LH connector D9 terminal 5 and ground.
  5 - Ground: Approx. 10V
OK or NG

OK: GO TO 3.

NG: GO TO 2.

Fig 1: Identifying Voltage Between Front Power Window Motor LH Connector D9 Terminal 5 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH and main power window and door lock/unlock switch.
3. Check continuity between front power window motor LH connector D9 terminal 5 and main power window and door lock/unlock switch connector D7 terminal 15.
  5 - 15: Continuity should exist .
OK or NG

OK: Replace main power window and door lock/unlock switch.

NG: Repair or replace harness.

Fig 2: Identifying Harness Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH.
3. Check continuity between front power window motor LH connector D9 terminal 3 and ground.
  3 - Ground: Continuity should exist .
OK or NG

OK: GO TO 5.

NG: GO TO 4.

Fig 3: Identifying Continuity Between Front Power Window Motor LH Connector D9 Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER GROUND CIRCUIT
1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between front power window motor LH connector D9 terminal 3 and main power window and door lock/unlock switch connector D7 terminal 2.
  3 - 2: Continuity should exist .
OK or NG

OK: Replace main power window and door lock/unlock switch.

NG: Repair or replace harness.

Fig 4: Identifying Encoder Ground Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK ENCODER SIGNAL

Connect front power window motor LH.
Turn ignition switch ON.
Check the signal between main power window and door lock/unlock switch connector and ground with oscilloscope.

CONNECTOR TERMINALS CONDITION REFERENCE CHART

Connector	Terminals		Condition	Signal
Connector	(+)	(-)	Condition	Signal
D7	13	Ground	Operating

Fig 5: Identifying Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace main power window and door lock/unlock switch.

NG: GO TO 6.

CHECK ENCODER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH and main power window and door lock/unlock switch.
3. Check continuity between front power window motor LH connector D9 terminal 6 and main power window and door lock/unlock switch connector D7 terminal 13.
  6 - 13: Continuity should exist .
OK or NG

OK: Replace front power window motor LH. Refer to "FRONT DOOR GLASS AND REGULATOR ".

NG: Repair or replace harness.

Fig 6: Identifying Encoder Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.