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Home >> Infiniti >> 2011 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Power Control System -- G37 Convertible) >> Power Distribution System >> DTC/Circuit Diagnosis >> DTC B261A: Push-Button Ignition Switch >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2010 Infiniti G37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BCM OUTPUT
    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.
      TERMINAL VOLTAGE REFERENCE CHART

      (+) (-) Voltage (V) (Approx.)
      IPDM E/R
      Connector Terminal
      E5 28 Ground Battery voltage

      Is the inspection result normal? 

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

      NO: GO TO 2.

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

      IPDM E/R BCM Continuity
      Connector Terminal Connector Terminal
      E5 28 M122 89 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      IPDM E/R Ground Continuity
      Connector Terminal
      E5 28 Not existed

      Is the inspection result normal? 

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

      NO: Repair or replace harness.

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