LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2008 >> EX35 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System >> Component Diagnosis >> Encoder Circuit >> Driver Side >> Diagnosis Procedure >> Encoder Circuit Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Encoder Circuit Check

  1. CHECK ENCODER SIGNAL 
    1. Turn ignition switch ON.
    2. Check signal between power window main switch harness connector and ground with oscilloscope.
      SIGNAL REFERENCE

      Power window main switch Ground Signal (Reference value)
      Connector Terminal
      D8 9 Refer to following signal
      13
      Fig 1: Identifying Signal Pulses Between Power Window Main Switch Harness Connector & Ground
      G04888492Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

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

    NO: GO TO  2.

  2. CHECK ENCODER SIGNAL CIRCUIT 
    1. Turn ignition 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.
      CONTINUITY SPECIFICATION

      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D8 9 D10 3 Existed
      13 5
    4. Check continuity between power window main switch harness connector and ground.
      CONTINUITY SPECIFICATION

      Power window main switch Ground Continuity
      Connector Terminal
      D8 9 Not existed
      13

    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 ignition switch ON.
    3. Check voltage between front power window motor (driver side) harness connector and ground.
      VOLTAGE SPECIFICATION

      Front power window motor (driver side) Ground Voltage (V) (Approx.)
      Connector Terminal
      D10 4 Battery voltage

    Is the inspection result normal? 

    YES: GO TO  4.

    NO: GO TO  5.

  4. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between power window main switch connector and front power window motor (driver side) harness connector.
      CONTINUITY SPECIFICATION

      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D8 2 D10 6 Existed
    3. Check continuity between front power window motor (driver side) harness connector and ground.
      CONTINUITY SPECIFICATION

      Front power window motor (driver side) Ground Continuity
      Connector Terminal
      D10 6 Not existed

    Is the inspection result normal? 

    YES: Replace front power window motor. Refer to REMOVAL AND INSTALLATION

    NO: Repair or replace harness or connector.

  5. CHECK POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      CONTINUITY SPECIFICATION

      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D8 15 D10 4 Existed
    3. Check continuity between power window main switch harness connector and ground.
      CONTINUITY SPECIFICATION

      Power window main switch Ground Continuity
      Connector Terminal
      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.

scientia non olet · About LEMON Manuals