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Home >> Infiniti >> 2012 >> FX35 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 162 (Power Control System -- FX35/FX50) >> Power Distribution System >> DTC/Circuit Diagnosis >> Push-Button Ignition Switch >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Infiniti FX50 and 2011 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

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

    Does ignition switch turn 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 and BCM connector.
    2. Check voltage between IPDM E/R harness connector and ground.
    TERMINALS VOLTAGE REFERENCE CHART

    (+) (-) 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.
    2. Check continuity between IPDM E/R harness connector and push-button ignition switch harness connector.
      TERMINALS CONTINUITY REFERENCE CHART

      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 CHART

    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.

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

    (+) (-) 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.
    2. Check continuity between BCM harness connector and push-button ignition switch harness connector.
      TERMINALS CONTINUITY REFERENCE CHART

      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 CHART

    BCM Ground Continuity
    Connector Terminal
    M122 89 Not existed

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair or replace harness.

  6. CHECK PUSH-BUTTON IGNITION SWITCH

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace push-button ignition switch. Refer to "REMOVAL AND INSTALLATION ".

  7. CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT

    Check continuity between push-button ignition switch and ground.

    TERMINALS CONTINUITY REFERENCE CHART

    Push-button ignition switch Ground Continuity
    Connector Terminal
    M50 1 Existed

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Repair or replace harness.

  8. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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