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Home >> Infiniti >> 2011 >> EX35 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Power Control System (CROSSCABRIOLET)) >> Power Distribution System >> DTC/Circuit Diagnosis >> DTC B260A: Ignition Relay >> Diagnosis Procedure

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 DTC WITH IPDM E/R

    Check "Self diagnostic result" with CONSULT. Refer to "DTC INDEX ".

    Is DTC detected? 

    YES: Repair or replace the malfunctioning parts.

    NO: GO TO 2.

  2. CHECK IGNITION RELAY INPUT SIGNAL
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector.
    3. Check voltage between BCM harness connector and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M121 47 Ground Battery voltage

      Is the inspection result normal? 

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

      NO: GO TO 3.

  3. CHECK IGNITION RELAY (IPDM E/R) CIRCUIT
    1. Disconnect IPDM E/R 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 27 M121 47 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      CONTINUITY REFERENCE CHART

      IPDM E/R Ground Continuity
      Connector Terminal
      E10 27 Not existed

      Is the inspection result normal? 

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

      NO: Repair or replace harness.