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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan 370Z. 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-III. Refer to "DTC INDEX ".

    Is the inspection result normal? 

    YES: Go to 2.

    NO: Repair or replace the 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: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      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.

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