2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Encoder Switch Check (Passenger Side)

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.
  1. CHECK FRONT POWER WINDOW REGULATOR (PASSENGER SIDE) POWER SUPPLY
    1. Turn ignition switch ON.
    2. Check voltage between passenger door control unit connector D38 terminal 4 and ground.
      Fig 1: Checking Front Power Window Regulator (Passenger Side) Power Supply
      G02340151Courtesy of NISSAN MOTOR CO., U.S.A.
      1. 4 (W) - Ground: Approx. 10V 

    OK or NG 

    1. OK: Go to 2.
    2. NG: Replace passenger door control unit.

  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 driver door control unit (LCU01) connector D38 terminal 4 and front power window regulator (passenger side) connector D37 terminal 5.
      Fig 2: Checking Harness For Continuity
      G02340152Courtesy of NISSAN MOTOR CO., U.S.A.
      1. 4 (W) - 5 (W): Continuity should exist. 

    OK or NG 

    1. OK: Go to 3.
    2. NG: Repair or replace harness between passenger door control unit and front power window regulator (passenger side).

  3. Check Encoder Ground 

    Check continuity between front power window regulator (passenger side) connector D37 terminal 3 and ground.

    1. 3 (B) - Ground: Continuity should exist. 

    OK or NG 

    1. OK: Go to 4.
    2. NG: Repair or replace harness.
    Fig 3: Checking Encoder Ground
    G02340153Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Check Encoder Signal 
    1. Connect passenger door control unit and 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: Terminals & Connector Condition Signal Chart
      G02340154Courtesy of NISSAN MOTOR CO., U.S.A.
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