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Home >> Nissan-Datsun >> 2012 >> Altima SL >> Repair and Diagnosis (Single Page) >> Body & Frame >> Windows >> Power Window Control System (LH&RH Front Anti-Pinch) (Sedan) >> DTC/Circuit Diagnosis >> Encoder >> Driver Side >> DRIVER SIDE: Diagnosis Procedure >> Encoder Circuit Check
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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 and ground with oscilloscope.
      Terminals Signal (Reference value)
      (+) (-)
      Main power window and door lock/unlock switch connector Terminal
      D7 9 Ground Refer to following signal
      13
      Fig 1: Checking Encoder Operation
      G05046757Courtesy of NISSAN NORTH AMERICA, INC.
      Fig 2: Encoder Signal Waveform Graph
      G04888492Courtesy 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 and ground.
      Terminal Voltage (V) (Approx.)
      (+) (-)
      Front power window motor LH connector Terminal
      D9 4 Ground 10
      Fig 3: Checking Front Power Window Motor LH Power Supply
      G05046759Courtesy of NISSAN NORTH AMERICA, INC.

      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 LH connector (B).
      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 (A) 15 D9 (B) 4 Yes
    4. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
      Fig 4: Checking Harness Continuity 1
      G05046760Courtesy of NISSAN NORTH AMERICA, INC.
      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D7 (A) 15 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 "POWER WINDOW MAIN SWITCH: 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.
      Front power window motor LH connector Terminal Ground Continuity
      D9 6 Yes
      Fig 5: Checking Ground Circuit
      G05046761Courtesy of NISSAN NORTH AMERICA, INC.

      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).
      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 (A) 2 D9 (B) 6 Yes
      Fig 6: Checking Harness Continuity 2
      G05046762Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ". After that, refer to "POWER WINDOW MAIN SWITCH: 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).
      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 (A) 9 D9 (B) 3 Yes
      13 5
    3. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
      Fig 7: Checking Harness Continuity 3
      G05046763Courtesy of NISSAN NORTH AMERICA, INC.
      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D7 (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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