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Encoder Circuit Check

  1. CHECK ENCODER OPERATION

    1. Turn ignition switch ON.
    2. Check signal between main power window and door lock/unlock switch connector D7 and ground with oscilloscope.
      Terminals Signal
      (Reference value)
      (+) (-)
      Main power window and door lock/unlock switch connector Terminal
      D7 4 Ground Refer to following signal
      5
      Fig 1: Main Power Window And Door Lock/Unlock Switch Encoder Signal (1 And 2)
      G08686851Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal? 

    YES  Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO  GO TO STEP 2.

  2. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY

    1. Turn ignition switch ON.
    2. Check voltage between front power window motor LH connector D9 and ground.
      Terminal Voltage
      (Approx.)
      (+) (-)
      Front power window motor LH connector Terminal
      D9 2 Ground 10

    Is the measurement value within the specification? 

    YES: GO TO  4.

    NO: GO TO 3.

  3. CHECK HARNESS CONTINUITY 1

    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch and front power window motor LH.
    3. Check continuity between main power window and door lock/unlock switch connector D7 and front power window motor LH connector D9.
      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 14 D9 2 Yes
    4. Check continuity between main power window and door lock/unlock switch connector D7 and ground.
      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D7 14 No

    Is the inspection result normal? 

    YES  Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION . After that, refer to ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT SPECIAL REPAIR REQUIREMENT .

    NO  Repair or replace the harness or connectors.

  4. CHECK GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH.
    3. Check continuity between front power window motor LH connector D9 and ground.
      Front power window motor LH connector Terminal Ground Continuity
      D9 4 Yes

    Is the inspection result normal? 

    YES: GO TO  6.

    NO: GO TO 5.

  5. CHECK HARNESS CONTINUITY 2

    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between main power window and door lock/unlock switch connector D7 and front power window motor LH connector D9.
      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 12 D9 4 Yes

    Is the inspection result normal? 

    YES  Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION . After that, refer to ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT SPECIAL REPAIR REQUIREMENT .

    NO  Repair or replace the harness or connectors.

  6. CHECK HARNESS CONTINUITY 3

    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between main power window and door lock/unlock switch connector D7 and front power window motor LH connector D9.
      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 5 D9 5 Yes
      4 6
    3. Check continuity between main power window and door lock/unlock switch connector D7 and ground.
      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D7 5 No
      4

    Is the inspection result normal? 

    YES  Replace front power window motor LH. Refer to REMOVAL AND INSTALLATION - FRONT REGULATOR . After that, refer to ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT SPECIAL REPAIR REQUIREMENT .

    NO  Repair or replace the harness or connectors.

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