LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2013 >> Leaf SL >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System >> DTC/Circuit Diagnosis >> Encoder Circuit >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

  1. CHECK ENCODER PULSE SIGNAL 
    1. Turn power switch ON.
    2. Check signal between power window main switch harness connector and ground with oscilloscope.
      (+) (-) Signal (Reference value)
      Power window main switch
      Connector Terminal
      D35 4 Ground Refer to following signal
      5
      Fig 1: Encoder Signal 1 And 2 Voltage Waveform
      G06934392Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal? 

    YES: GO TO  7.

    NO: GO TO 2.

  2. CHECK ENCODER SIGNAL CIRCUIT 
    1. Turn power switch OFF.
    2. Disconnect power window main switch connector and front power window motor (driver side) connector.
    3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D35 4 D37 4 Yes
      5 5
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D35 4 No
      5

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY 
    1. Connect power window main switch connector.
    2. Turn power switch ON.
    3. Check voltage between front power window motor (driver side) harness connector and ground.
    (+) (-) Voltage (Approx.)
    Front power window motor (driver side)
    Connector Terminal
    D37 1 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: GO TO 4.

  4. CHECK ENCODER POWER SUPPLY CIRCUIT 
    1. Turn power switch OFF.
    2. Disconnect power window main switch connector.
    3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D35 14 D37 1 Yes
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D35 14 No

    Is the inspection result normal? 

    YES: Replace power window main switch.

    NO: Repair or replace harness.

  5. CHECK ENCODER GROUND CIRCUIT 
    1. Turn power switch OFF.
    2. Check continuity between front power window motor (driver side) harness connector and ground.
      Front power window motor (driver side) Ground Continuity
      Connector Terminal
      D37 6 Yes

    Is the inspection result normal? 

    YES: GO TO  7.

    NO: GO TO 6.

  6. CHECK ENCODER GROUND CIRCUIT 
    1. Disconnect power window main switch connector.
    2. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D35 12 D37 6 Yes
    3. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D35 12 No

    Is the inspection result normal? 

    YES: Replace front power window motor (driver side).

    NO: Repair or replace harness.

  7. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : Inspection End.

scientia non olet · About LEMON Manuals