2008 Infiniti EX35 Base, RWDFACTORY OEM SERVICE PROCEDURE

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.

Chapter Navigation
Return to Chapter: Diagnosis Procedure
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.