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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.
      Signal name Terminals Signal (Reference value)
      (+) (-)
      Main power window and door lock/unlock switch connector Terminal
      Encoder signal 1 D7 13 Ground Refer to following signal
      Encoder signal 2 9
      Fig 1: Encoder Signal (1 And 2) Voltage Output Waveform
      G06934392Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

      NO: GO TO 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 5 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 "WORK PROCEDURE ".

      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 5 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 "WORK PROCEDURE ".

      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 13 D9 5 Yes
      9 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 13 No
      9

      Is the inspection result normal? 

      YES: Replace front power window motor LH. Refer to "REMOVAL AND INSTALLATION - FRONT REGULATOR ". After that, refer to "WORK PROCEDURE ".

      NO: Repair or replace the harness or connectors.

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