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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Power Control System (Power Distribution System) (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC B261A: Push-Button Ignition Switch >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK PUSH-BUTTON IGNITION SWITCH SIGNAL (PUSH-BUTTON IGNITION SWITCH)

    Check voltage between push-button ignition switch connector M17 and ground.

    Push-button ignition switch Ground Voltage
    (Approx.)
    Connector Terminal
    M17 8 - Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    GO TO STEP 3  .

  2. CHECK PUSH-BUTTON IGNITION SWITCH SIGNAL (IPDM E/R)

    Check voltage between IPDM E/R connector E119 and ground.

    IPDM E/R Ground Voltage
    (Approx.)
    Connector Terminal
    E119 38 - Battery voltage

    Is the inspection result normal?

    YES 

    Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness or connectors.

  3. CHECK PUSH-BUTTON IGNITION SWITCH SIGNAL CIRCUIT (PUSH-BUTTON IGNITION SWITCH)

    1. Disconnect push-button ignition switch connector, IPDM E/R connector E119 and BCM connector M18.
    2. Check continuity between BCM connector M18 and push-button ignition switch connector M17.
      BCM Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      M18 1 M17 8 Yes
    3. Check continuity between BCM connector M18 and ground.
      BCM Ground Continuity
      Connector Terminal
      M18 1 - No

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness or connectors.