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Home › Infiniti › 2012 › M37 Base › Repair and Diagnosis › Electrical › Body Electrical › Power Control System (Power Distribution System) › DTC/Circuit Diagnosis › DTC B26F2: Ignition Relay › Diagnosis Procedure

Diagnosis Procedure

  1. CHECK IPDM E/R SELF-DIAGNOSTIC RESULT 
    1. Turn ignition switch ON.
    2. Erase the DTC of IPDM E/R.
    3. Turn ignition switch OFF.
    4. Turn ignition switch ON and check the DTC again.

      Is DTC detected? 

      YES: Repair or replace the malfunctioning part. Refer to "DTC INDEX ".

      NO: GO TO 2.

  2. CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL 
    1. Turn ignition switch OFF.
    2. Check voltage between IPDM E/R harness connector and ground.
      (+) (-) Condition Voltage (V) (Approx.)
      IPDM E/R
      Connector Terminal
      E5 18 Ground Ignition switch OFF or ACC 12

      Is the inspection result normal? 

      YES: Replace IPDM E/R.

      NO: GO TO 3.

  3. CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL CIRCUIT - 1 
    1. Disconnect BCM and IPDM E/R connectors.
    2. Check continuity between IPDM E/R harness connector and ground.
      IPDM E/R Ground Continuity
      Connector Terminal
      E5 18 Not existed

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair or replace harness.

  4. CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL CIRCUIT - 2 
    1. Connect IPDM E/R connectors.
    2. Check voltage between IPDM E/R harness connector and ground.
      (+) (-) Condition Voltage (V) (Approx.)
      IPDM E/R
      Connector Terminal
      E5 18 Ground Ignition switch OFF or ACC 12

      Is the inspection result normal? 

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

      NO: Replace IPDM E/R.

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