Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Infiniti >> 2011 >> EX35 Base, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Power Control System >> Power Distribution System >> DTC/Circuit Diagnosis >> DTC B2553: Ignition Relay >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DTC WITH IPDM E/R

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

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Repair or replace malfunctioning parts.

  2. 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 SPECIFICATION

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

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 3.

  3. CHECK IGNITION RELAY FEEDBACK CIRCUIT
    1. Disconnect IPDM E/R connector.
    2. Check continuity between BCM harness connector and IPDM E/R harness connector.
      CONTINUITY SPECIFICATION

      BCM IPDM E/R Continuity
      Connector Terminal Connector Terminal
      M123 123 E5 19 Existed
    3. Check continuity between BCM harness connector and ground.
      CONTINUITY SPECIFICATION

      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 or connector.

  4. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

scientia non olet · About Mike's Workshop Manuals