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HOMESERVICE MANUALSINFINITI2008EX35 BASE, AWDREPAIR AND DIAGNOSISELECTRICALMOTORS, SWITCHES, RELAYSPOWER CONTROL SYSTEMPOWER DISTRIBUTION SYSTEMCOMPONENT DIAGNOSISPUSH-BUTTON IGNITION SWITCHDIAGNOSIS PROCEDURE
2008 Infiniti EX35 Base, AWD

Diagnosis Procedure

2008 Infiniti EX35 Base, AWDSECTION Diagnosis Procedure
  1. CHECK PUSH-BUTTON IGNITION SWITCH OPERATION 

    Press push-button ignition switch and check if it turns to ON.

    Does ignition switch turn to ON? 

    YES: GO TO  2.

    NO: GO TO  4.

  2. CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R) 
    1. Disconnect push-button ignition switch connector.
    2. Check voltage between IPDM E/R harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      IPDM E/R
      Connector Terminal
      E5 28 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION  .

  3. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R) 
    1. Disconnect IPDM E/R connector and BCM connector.
    2. Check continuity between IPDM E/R harness connector and push-button ignition switch harness connector.
      TERMINALS CONTINUITY REFERENCE

      IPDM E/R Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      E5 28 M50 4 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      IPDM E/R Ground Continuity
      Connector Terminal
      E5 28 Not existed

    Is the inspection result normal? 

    YES: GO TO  6.

    NO: Repair or replace harness or connector.

  4. CHECK IGNITION SWITCH OUTPUT SIGNAL (BCM) 
    1. Disconnect push-button ignition switch connector.
    2. Check voltage between BCM harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M122 89 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: Replace BCM. Refer to REMOVAL AND INSTALLATION  .

  5. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM) 
    1. Disconnect BCM connector and IPDM E/R connector.
    2. Check continuity between BCM harness connector and push-button ignition switch harness connector.
      TERMINALS CONTINUITY REFERENCE

      BCM Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      M122 89 M50 4 Existed
    3. Check continuity between BCM harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      BCM Ground Continuity
      Connector Terminal
      M122 89 Not existed

    Is the inspection result normal? 

    YES: GO TO  6.

    NO: Repair or replace harness or connector.

  6. CHECK INTERMITTENT INCIDENT 

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END

RENDER: 1.0x

NO RELATED

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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.