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Home › Nissan-Datsun › 2003 › Sentra SE-R, Automatic › Repair and Diagnosis › External Pages › Different car › Section 1687 (Glass, Window System & Mirrors) › Power Window System › Encoder Circuit Check Front LH (Crew Cab)

Encoder Circuit Check Front LH (Crew Cab)

WARNING: This page is about a different car, the 2006 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH.
    3. Turn ignition switch ON.
    4. Check voltage between front power window motor LH connector D9 terminal 4 and ground.

      4 - Ground: Approx. 10V 

      Fig 1: Checking Voltage Between Front Power Window Motor LH Connector D9 Terminal 4 And Ground
      G04187832Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch.
    3. Check continuity between front power window motor LH connector and main power window and door lock/unlock switch connector.
      Fig 2: Checking Continuity Between Front Power Window Motor LH Connector And Main Power Window & Door Lock/Unlock Switch Connector And Ground
      G04187833Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY CHECKING CHART

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 15 Front power window motor LH: D9 4 Yes
    4. Check continuity between front power window motor LH connector and ground.
      CONNECTOR TERMINAL CONTINUITY CHECK CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 4 No

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: Repair or replace harness.

  3. CHECK ENCODER GROUND 
    1. Turn ignition switch OFF.
    2. Check continuity between front power window motor LH connector D9 terminal 6 and ground.

      6 - Ground: Continuity should exist. 

      Fig 3: Checking Resistance Between Terminal 6 And Ground
      G04135295Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

  4. CHECK ENCODER GROUND CIRCUIT 
    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between front power window motor LH connector D9 terminal 6 and main power window and door lock/unlock switch connector D7 terminal 2.

      6 - 2: Continuity should exist. 

      Fig 4: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 2
      G04187835Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: Repair or replace harness.

  5. CHECK ENCODER SIGNAL 
    1. Connect front power window motor LH and main power window and door lock/unlock switch.
    2. Turn ignition switch ON.
    3. Check the signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
      Fig 5: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground With Oscilloscope
      G04187837G04187836Courtesy of NISSAN MOTOR CO., U.S.A.
      SIGNALS CHART

      Connector Terminals Condition Signal
      (+) (-)
      D7 13 Ground Opening
      G04187836

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: GO TO 6.

  6. CHECK ENCODER CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH and main power window and door lock/unlock switch.
    3. Check continuity between front power window motor LH connector and main power window and door lock/unlock switch connector.
      Fig 6: Checking Continuity Between Front Power Window Motor LH Connector And Main Power Window & Door Lock/Unlock Switch Connector And Ground
      G04187838Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY MEASUREMENT CHART

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 13 Front power window motor LH: D9 3 Yes
    4. Check continuity between front power window motor LH connector and ground.
      CONTINUITY CHECK CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 3 No

    OK or NG 

    OK: Replace front power window motor LH. Refer to "REMOVAL AND INSTALLATION ".

    NG: Repair or replace harness.

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