LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2015 >> Q60 Base, 2D Convertible >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Convertible) >> DTC/Circuit Diagnosis >> Encoder >> Driver Side >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

  1. CHECK ENCODER OPERATION

    1. Turn ignition switch ON.
    2. Check signal between power window main switch harness connector and ground with oscilloscope.
      Terminals Signal
      (Reference value)
      (+) (-)
      Power window main switch
      connector      		 Terminal
      D8 9 Ground Refer to following signal
      13
      Fig 1: Encoder Signal Waveform Graph
      G04888492Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    GO TO STEP 2. 

  2. CHECK ENCODER SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector and driver side power window motor connector.
    3. Check continuity between power window main switch harness connector and driver side power window motor harness connector.
      Power window main switch connector Terminal Driver side power window motor connector Terminal Continuity
      D8 9 D10 5 Existed
      13 2
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch connector Terminal Ground Continuity
      D8 9 Not existed
      13

    Is the inspection result normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY CIRCUIT

    1. Connect power window main switch connector.
    2. Turn ignition switch ON.
    3. Check voltage between driver side power window motor harness connector and ground.
      Terminal Voltage (V)
      (Approx.)
      (+) (-)
      Driver side power window motor connector Terminal
      D10 4 Ground 12

    Is the measurement value within the specification?

    YES 

    GO TO STEP 4. 

    NO 

    GO TO STEP 5. 

  4. CHECK GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Check continuity between driver side power window motor harness connector and ground.
      Driver side power window motor connector Terminal Ground Continuity
      D10 1 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 7. 

    NO 

    GO TO STEP 6. 

  5. CHECK HARNESS CONTINUITY 1

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector.
    3. Check continuity between power window main switch harness connector and driver side power window motor harness connector.
      Power window main switch connector Terminal Driver side power window motor connector Terminal Continuity
      D8 15 D10 4 Existed
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch connector Terminal Ground Continuity
      D8 15 Not existed

    Is the inspection result normal?

    YES 

    Replace power window main switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  6. CHECK HARNESS CONTINUITY 2

    1. Disconnect power window main switch connector.
    2. Check continuity between power window main switch harness connector and driver side power window motor harness connector.
      Power window main switch connector Terminal Driver side power window motor connector Terminal Continuity
      D8 2 D10 1 Existed

    Is the inspection result normal?

    YES 

    Replace power window main switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  7. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END.

scientia non olet · About LEMON Manuals