LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System >> Circuit Diagnosis >> Encoder >> Rear LH >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

  1. CHECK ENCODER SIGNAL

    1. Turn ignition switch ON.
    2. Check signal between rear power window switch LH harness connector and ground with oscilloscope.
      Signal name (+) (-) Signal
      (Reference value)
      Rear power window switch LH
      Connector Terminal
      Encoder signal 1 D63 12 Ground Refer to following signal
      Encoder signal 2 15
      G06934392Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Replace rear power window switch LH. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 2  .

  2. CHECK ENCODER SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect rear power window switch LH connector and rear power window motor LH connector.
    3. Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.
      Rear power window switch LH Rear power window motor LH Continuity
      Connector Terminal Connector Terminal
      D63 12 D67 5 Existed
      15 6
    4. Check continuity rear power window switch LH harness connector and ground.
      Rear power window switch LH Ground Continuity
      Connector Terminal
      D63 12 Not existed
      15

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY

    1. Connect rear power window switch LH connector.
    2. Turn ignition switch ON.
    3. Check voltage between rear power window motor LH harness connector and ground.
      (+) (-) Voltage (V)
      (Approx.)
      Rear power window motor LH
      Connector Terminal
      D67 2 Ground 12

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. CHECK ENCODER POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect rear power window switch LH connector.
    3. Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.
      Rear power window switch LH Rear power window motor LH Continuity
      Connector Terminal Connector Terminal
      D63 4 D67 2 Existed
    4. Check continuity between rear power window switch LH harness connector and ground.
      Rear power window switch LH Ground Continuity
      Connector Terminal
      D63 4 Not existed

    Is the inspection result normal?

    YES 

    Replace rear power window switch LH. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  5. CHECK GROUND CIRCUIT 1

    1. Turn ignition switch OFF.
    2. Disconnect rear power window switch LH harness connector.
    3. Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.
      Rear power window switch LH Rear power window motor LH Continuity
      Connector Terminal Connector Terminal
      D63 3 D67 4 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Repair or replace harness.

  6. CHECK GROUND CIRCUIT 2

    1. Connect rear power window switch LH connector.
    2. Check continuity between rear power window switch LH connector and ground.
      Rear power window switch LH Ground Continuity
      Connector Terminal
      D63 3 Existed

    Is the inspection result normal?

    YES 

    Replace rear power window motor LH. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace rear power window switch LH. Refer to REMOVAL AND INSTALLATION .

scientia non olet · About LEMON Manuals