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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 B2553: 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 the inspection result normal? 

    YES: GO TO 2.

    NO: Repair or replace malfunctioning parts.

  2. CHECK FUSE

    Check that the following fuse are not fusing.

    FUSE REFERENCE CHART

    Signal name Connection position Fuse No. Capacity
    Ignition power supply FUSE BLOCK (J/B) 3 10A

    Is the fuse fusing? 

    YES: Repair the applicable circuit. And then replace the fuse.

    NO: GO TO 3.

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

      (+) (-) Condition Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M123 123 Ground Ignition switch OFF 0
      ON Battery voltage

      Is the inspection result normal? 

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

      NO: GO TO 4.

  4. CHECK IGNITION RELAY FEEDBACK CIRCUIT
    1. Disconnect fuse block (J/B) connector.
    2. Check continuity between BCM harness connector and fuse block (J/B) harness connector.
      CONTINUITY REFERENCE CHART

      BCM FUSE BLOCK (J/B) Continuity
      Connector Terminal Connector Terminal
      M123 123 M1 2A Existed
    3. Check continuity between BCM harness connector and ground.
      CONTINUITY REFERENCE CHART

      BCM Ground Continuity
      Connector Terminal
      M123 123 Not existed

      Is the inspection result normal? 

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

      NO: Repair or replace harness.