Rear Power Window Regulator LH or RH Circuit Check

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Check rear door control unit LH or RH output signal
1. Turn ignition switch ON.
2. Check voltage between rear power window regulator LH or RH connector D57 (LH) or D77 (RH) terminals 1, 2 and ground.
  
  Fig 1: Terminals Connector Voltage Specifications
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking Rear Door Control Unit LH Or RH Output Signal
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Replace rear power window regulator LH or RH.
2. NG: Go to 2.
Check Rear Power Window Regulator LH Or RH 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) terminals 3, 14 and rear power window regulator LH or RH connector D57 (LH) or D77 (RH) terminals 1, 2.
  
  Fig 3: Checking Rear Power Window Regulator LH Or RH Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. 3 (L/W) - 2 (L/W): Continuity should exist
  2. 14 (L/R) - 1 (L/R): Continuity should exist
4. Check continuity between rear door control unit LH or RH connector D58 (LH) or D78 (RH) terminals 3, 14 and ground.
  1. 3 (L/W) - Ground: Continuity should not exist.
  2. 14 (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.