Encoder Circuit Check (Passenger Side)

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