Encoder Circuit Check (Rear LH or RH)

CHECK REAR POWER WINDOW REGULATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window regulator LH or RH connector.
3. Turn ignition switch ON.
4. Check voltage between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 6 and ground.
  1. 6 (W) - Ground : Approx. 10V
  Fig 1: Checking Voltage Between Rear Power Window Regulator LH Or RH Connector D57 (LH) Or D77 (RH) Terminal 6 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 rear door control unit LH or RH and rear power window regulator LH or RH connector.
3. Check continuity between rear door control unit LH or RH connector D58(LH) or D78(RH) terminal 15 and rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 6.
  1. 15 (W) - 6 (W) : Continuity should exist.
  Fig 2: Checking Continuity Between Rear Door Control Unit LH Or RH Connector D58 (LH) Or D78 (RH) Terminal 15 And Rear Power Window Regulator LH Or RH Connector D57 (LH) Or D77 (RH) Terminal 6
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG?
1. OK >> Replace rear door control unit LH or RH.
2. NG >> Repair or replace harness between rear door control unit LH or RH and rear power window regulator LH or RH.
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Disconnect rear power window regulator LH or RH connector.
3. Check continuity between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 4 and ground.
  1. 4 (B) - Ground : Continuity should exist.
  Fig 3: Checking Continuity Between Rear Power Window Regulator LH Or RH Connector D57 (LH) Or D77 (RH) Terminal 4 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 rear power window regulator LH or RH connector.
2. Turn ignition switch ON.
3. Check the signal between rear door control unit LH or RH connector and ground with oscilloscope.
  
  Fig 4: Signal Specifications Between Rear Door Control Unit LH Or RH Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking The Signal Between Rear Door Control Unit LH Or RH 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 rear door control unit LH or RH and rear power window regulator LH or RH connector.
3. Check continuity between rear door control unit LH or RH connector D58(LH) or D78(RH) terminal 19 and rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 5.
  1. 19 (G) - 5 (G) : Continuity should exist.
  Fig 6: Checking Continuity Between Rear Door Control Unit LH Or RH Connector D58 (LH) Or D78 (RH) Terminal 19 And Rear Power Window Regulator LH Or RH Connector D57 (LH) Or D77 (RH) Terminal 5
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG?
1. OK >> Replace rear power window motor LH or RH.
2. NG >> Repair or replace harness between rear door control unit LH or RH and rear power window regulator LH or RH.