Encoder Circuit Check Front LH

CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH.
3. Turn ignition switch ON.
4. Check voltage between front power window motor LH connector D9 terminal 4 and ground.
  4 - Ground : Approx. 10V
  
  Fig 1: Identifying Voltage Between Connector D9 Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 3.
- NG : GO TO 2.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between front power window motor LH connector D9 terminal 4 and main power window and door lock/unlock switch connector D7 terminal 15.
  4 - 15 : Continuity should exist.
  
  Fig 2: Identifying Continuity Between Front Power Window Motor LH Connector D9 Terminal 4 And Connector D7 Terminal 15
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Replace main power window and door lock/unlock switch. Refer to "REMOVAL ".
- NG : Repair or replace harness.
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Check continuity between front power window motor LH connector D9 terminal 6 and ground.
  6 - Ground : Continuity should exist.
  
  Fig 3: Identifying Resistance Between Terminal 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 5.
- NG : GO TO 4.
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 6 and main power window and door lock/unlock switch connector D7 terminal 2.
  6 - 2 : Continuity should exist.
  
  Fig 4: Identifying Continuity Between Connector D9 Terminal 6 And Connector D7 Terminal 2
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Replace main power window and door lock/unlock switch. Refer to "REMOVAL ".
- NG : Repair or replace harness.

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.

TERMINALS REFERENCE

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

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. Refer to "REMOVAL ".
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 (B) terminal 3 and main power window and door lock/unlock switch connector D7 (A) terminal 13.
  3 - 13 : Continuity should exist.
  
  Fig 6: Identifying Continuity Between Connector D9 Terminal 3 And Connector D7 Terminal 13
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Replace front power window motor LH. Refer to "FRONT DOOR GLASS REGULATOR ".
- NG : Repair or replace harness.