Encoder Circuit Check (passenger side)

CHECK FRONT POWER WINDOW MOTOR (PASSENGER SIDE) CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between front power window motor (passenger side) connector D37 terminal 4 and ground.
  1. 4 (W) - Ground: Approx. 10V
OK or NG
1. OK: GO TO 3
2. NG: GO TO 2
Fig 1: Checking Voltage Between Front Power Window Motor (Passenger Side) Connector D37 Terminal 4 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect passenger door control unit and front power window motor (passenger side) connector.
3. Check continuity between passenger door control unit connector D38 terminal 15 and front power window motor (passenger side) connector D37 terminal 4.
  1. 15 (W) - 4 (W): Continuity should exist.
OK or NG
1. OK: Replace passenger door control unit.
2. NG: Repair or replace harness.
Fig 2: Checking Harness Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Disconnect front power window motor (passenger side) connector.
3. Check continuity between front power window motor (passenger side) connector D37 terminal 6 and ground.
  1. 6 (B) - Ground: Continuity should exist.
OK or NG
1. OK: GO TO 4.
2. NG: Repair or replace harness.
Fig 3: Checking Continuity Between Front Power Window Motor (Passenger Side) Connector D37 Terminal 6 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER SIGNAL
1. Connect front power window motor (passenger side) connector.
2. Turn ignition switch ON.
3. Check the signal between passenger door control unit connector and ground with oscilloscope.
  
  Fig 4: Terminal Condition Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking Signal Between Passenger Door Control Unit Connector And Ground With Oscilloscope
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Encoder function is OK.
2. NG: GO TO 5.
CHECK ENCODER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect passenger door control unit and front power window motor (passenger side) connector.
3. Check continuity between passenger door control unit connector D38 terminal 19 and front power window motor (passenger side) connector D37 terminal 3.
  1. 19 (G) - 3 (G): Continuity should exist.
OK or NG
1. OK: Replace front power window motor (passenger side).
2. NG: Repair or replace harness.
Fig 6: Checking Encoder Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.