LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2014 >> Sentra SR >> 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

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL (PUSH-BUTTON IGNITION SWITCH) 
    1. Turn ignition switch OFF.
    2. Disconnect push-button ignition switch connector and IPDM E/R connector E39.
    3. Check voltage between push-button ignition switch connector M25 and ground.
      Push-button ignition switch Ground Voltage (Approx.)
      Connector Terminal
      M25 8 - Battery voltage

      Is the inspection result normal? 

      YES: GO TO  3.

      NO: GO TO 2.

  2. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM) 
    1. Disconnect BCM connector M83.
    2. Check continuity between BCM connector M83 and push-button ignition switch connector M25.
      BCM Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      M83 55 M25 8 Yes
    3. Check continuity between BCM connector M83 and ground.
      BCM Ground Continuity
      Connector Terminal
      M83 55 - No

      Is the inspection result normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness or connectors.

  3. CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R) 

    Check voltage between IPDM E/R connector E39 and ground.

    PDM E/R Ground Voltage (Approx.)
    Connector Terminal
    E39 66 - Battery voltage

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: GO TO 4.

  4. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R) 
    1. Disconnect BCM connector M83.
    2. Check continuity between IPDM E/R connector E39 and push-button ignition switch connector M25.
      IPDM E/R Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      E39 66 M25 8 Yes
    3. Check continuity between IPDM E/R connector E39 and ground.
      IPDM E/R Ground Continuity
      Connector Terminal
      E39 66 - No

      Is the inspection result normal? 

      YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness or connectors.

  5. CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT 

    Check continuity between push-button ignition switch connector M25 and ground.

    Push-button ignition switch Ground Continuity
    Connector Terminal
    M25 4 - Yes

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair or replace harness or connectors.

  6. CHECK PUSH-BUTTON IGNITION SWITCH 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: Refer to "INTERMITTENT INCIDENT ".

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