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

  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: Checking Voltage Between Front Power Window Motor LH Connector D9 Terminal 4 And Ground
    G04907458Courtesy 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 REFERENCE 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.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 4 No
      Fig 2: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 4 And Main Power Window And Door Lock/Unlock Switch Connector Terminal 15, And Between Connector D9 Terminal 4 And Ground
      G04907466Courtesy 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.

  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 Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Ground
    G04902751Courtesy 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: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Main Power Window Switch Connector D7 Terminal 2
    G04907468Courtesy 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.
      CONNECTOR TERMINALS SIGNAL REFERENCE

      Connector Terminals Condition Signal
      (+) (-)
      D7 13 Ground Opening
      G04907469Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 5: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
      G04907470Courtesy 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.
      TERMINAL CONTINUITY REFERENCE 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.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 3 No
      Fig 6: Between Front Power Window Motor LH Connector Terminal 3 And Main Power Window And Door Lock/Unlock Switch Connector Terminal 13
      G04907464Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

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

    NG: Repair or replace harness.

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