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Home › Nissan-Datsun › 2003 › Sentra SE-R, Automatic › Repair and Diagnosis › External Pages › Different car › Section 1831 (Glass, Window System & Mirrors) › Power Window System › Encoder Circuit Check Front LH (With Rear Power Vent Windows)

Encoder Circuit Check Front LH (With Rear Power Vent Windows)

WARNING: This page is about a different car, the 2006 Nissan Quest. 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 

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

    Fig 1: Identifying Voltage Between Front Power Window Motor Connector Terminal 4 And Ground
    G04199696Courtesy of NISSAN MOTOR CO., U.S.A.
  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.
      TERMINAL CONTINUITY CHECK 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
      Fig 2: Identifying Continuity Between Front Power Window Motor Main Power Window Switch Connector And Ground
      G04199697Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between front power window motor LH connector and ground.
      CONNECTOR TERMINAL CONTINUITY MEASUREMENT 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. Disconnect front power window motor LH.
    3. Check continuity between front power window motor LH connector D9 terminal 6 and ground.

      6 - Ground: Continuity should exist. 

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

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

    OK or NG 

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

    NG: Repair or replace harness.

    Fig 4: Identifying Continuity Between Front Motor Terminal 6 And Main Power Window Switch Terminal 2
    G04199699Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK ENCODER SIGNAL 
    1. Connect front power window motor LH.
    2. Turn ignition switch ON.
    3. Check the signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
      OSCILLOSCOPE SIGNAL OUTPUT CHART

      Connector Terminals Condition Signal
      (+) (-)
      D7 13 Ground Opening
      G04077331
      Fig 5: Identifying Signal Between Main Power Window Switch Terminal 13 And Ground Using Oscilloscope
      G04199701Courtesy 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: 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.
      CONTINUITY CHECK 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
      Fig 6: Identifying Continuity Between Front Motor Terminal 3 And Door Lock/Unlock Switch Terminal 13
      G04199702Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between front power window motor LH connector and ground.
      CONNECTOR TERMINAL CONTINUITY 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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