LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> FX35 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 28 (Power Control System (CROSSCABRIOLET)) >> Power Distribution System >> DTC/Circuit Diagnosis >> DTC B261A: Push-Button Ignition Switch >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IGNITION SWITCH OUTPUT SIGNAL
    1. Turn ignition switch OFF.
    2. Disconnect push-button ignition switch connector and IPDM E/R connector.
    3. Check voltage between IPDM E/R harness connector and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage (V) (Approx.)
      IPDM E/R
      Connector Terminal
      E10 28 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO 2.

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

  2. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT
    1. Disconnect BCM connector.
    2. Check continuity between IPDM E/R harness connector and BCM harness connector.
      CONTINUITY REFERENCE CHART

      IPDM E/R BCM Continuity
      Connector Terminal Connector Terminal
      E10 28 M121 60 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      CONTINUITY REFERENCE CHART

      IPDM E/R Ground Continuity
      Connector Terminal
      E10 28 Not existed

      Is the inspection result normal? 

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

      NO: Repair or replace harness.