Encoder Circuit Check Front LH (With Rear Power Vent Windows)

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

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 4 and ground.
  
  Fig 1: Checking Voltage Between Front Power Window Motor LH Connector D9 Terminal 4 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 4 (G/R) - Ground: Approx. 10V
OK or NG
- OK: GO TO 3.
- NG: GO TO 2.
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 4 and main power window and door lock/unlock switch connector D7 terminal 15.
  
  Fig 2: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 4 And Switch Connector D7 Terminal 15
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 4 (G/R) - 15 (G/R): Continuity should exist.
OK or NG
- OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".
- NG: Repair or replace harness.
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 6 and ground.
  
  Fig 3: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 6 (W/B) - Ground: Continuity should exist.
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.
  
  Fig 4: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Switch Connector D7 Terminal 2
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 6 (W/B) - 2 (W/B): Continuity should exist.
OK or NG
- OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".
- NG: Repair or replace harness.
CHECK ENCODER SIGNAL
1. Connect front power window motor LH.
2. Turn ignition switch ON.
3. Check the signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
  
  Fig 5: Oscilloscope Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector Terminal 13 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".
- 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 3 and main power window and door lock/unlock switch connector D7 terminal 13.
  - 3 (G/Y) - 13 (G/Y): 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 7: Checking Continuity Between front power window motor LH Connector D9 Terminal 3 And Switch Connector D7 Terminal 13
  Courtesy of NISSAN MOTOR CO., U.S.A.