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Home >> Infiniti >> 2003 >> Q45 >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System >> Rear Power Window Regulator (LH or RH) Circuit Check

Rear Power Window Regulator (LH or RH) Circuit Check

  1. CHECK REAR DOOR CONTROL UNIT LH OR RH OUTPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect rear power window regulator LH or RH.
    3. Turn ignition switch ON.
    4. Check voltage between rear power window regulator LH or RH connector and ground.
      Fig 1: Voltage Specifications Between Rear Power Window Regulator LH Or RH Connector And Ground
      G02045077Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: Checking Voltage Between Rear Power Window Regulator LH Or RH Connector And Ground
      G02045078Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG? 

    1. OK >> Replace rear power window motor LH or RH.
    2. NG >> GO TO 2
  2. CHECK REAR POWER WINDOW REGULATOR LH OR RH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect rear door control LH or RH unit connector.
    3. Check continuity between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminals 1, 3 and rear door control unit LH or RH connector D59(LH) or D79(RH) terminals 4, 5.
      1. 1 (L/W) - 4 (L/W) : Continuity should exist. 
      2. 3 (L/R) - 5 (L/R) : Continuity should exist. 
      Fig 3: Checking Continuity Between Rear Power Window Regulator LH Or RH Connector D57 (LH) Or D77 (RH) Terminals 1, 3 And Rear Door Control Unit LH Or RH Connector D59 (LH) Or D79 (RH) Terminals 4, 5
      G02045079Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between rear power window regulator LH or RH connector D59(LH) or D79(RH) terminals 1, 3 and ground.
      1. 1 (L/W) - Ground : Continuity should not exist. 
      2. 3 (L/R) - Ground : Continuity should not exist. 

    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.