LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2013 >> FX37 Base, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Power Control System (Power Distribution System) >> DTC/Circuit Diagnosis >> Push-Button Ignition Switch >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

  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.
      (+) (-) 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.
      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.
      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.
      (+) (-) Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M121 60 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.
      BCM Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      M121 60 M50 4 Existed
    3. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M121 60 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.

    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

scientia non olet · About LEMON Manuals