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Encoder Circuit Check

  1. CHECK ENCODER OPERATION
    1. Connect front power window motor LH.
    2. Turn ignition switch ON.
    3. Check signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
      TERMINAL SIGNAL CHART

      Terminals Signal (Reference value)
      (+) (-)
      Main power window and door lock/unlock switch connector Terminal
      D12 9 Ground Refer to following signal
      13
      Fig 1: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
      G05046757Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: Identifying Signal Waveform
      G04888492Courtesy of NISSAN MOTOR CO., U.S.A.

      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 and ground.
      TERMINAL VOLTAGE CHART

      Terminal Voltage (V) (Approx.)
      (+) (-)
      Front power window motor LH connector Terminal
      D9 4 Ground 10
      Fig 3: Checking Voltage Between Front Power Window Motor LH Connector And Ground
      G05046759Courtesy of NISSAN MOTOR CO., U.S.A.

      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 (A) and front power window motor connector (B).
      TERMINAL CONTINUITY CHART

      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D12 (A) 15 D9 (B) 4 Yes
    4. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
      TERMINAL CONTINUITY CHART

      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D12 (A) 15 No
      Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
      G05046760Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ". After that, refer to "DRIVER SIDE : SPECIAL REPAIR REQUIREMENT ".

      NO: Repair or replace harness.

  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 and ground.
      TERMINAL CONTINUITY CHART

      Front power window motor LH connector Terminal Ground Continuity
      D9 6 Yes
      Fig 5: Checking Continuity Between Front Power Window Motor LH Connector Terminal 6 And Ground
      G05046761Courtesy of NISSAN MOTOR CO., U.S.A.

      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 (A) and front power window motor LH connector (B).
      TERMINAL CONTINUITY CHART

      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D12 (A) 2 D9 (B) 6 Yes
      Fig 6: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector And Front Power Window Motor LH Connector
      G05046762Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ". After that, refer to "DRIVER SIDE : SPECIAL REPAIR REQUIREMENT ".

      NO: Repair or replace harness.

  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 (A) and front power window motor LH connector (B).
      TERMINAL CONTINUITY CHART

      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D12 (A) 9 D9 (B) 3 Yes
      13 5
      Fig 7: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector And Front Power Window Motor LH Connector
      G05046763Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
      TERMINAL CONTINUITY CHART

      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D12 (A) 9 No
      13

      Is the inspection result normal? 

      YES: Replace front power window motor LH. Refer to "REMOVAL AND INSTALLATION ". After that, refer to "DRIVER SIDE : SPECIAL REPAIR REQUIREMENT ".

      NO: Repair or replace harness.

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