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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security Control System >> DTC/Circuit Diagnosis >> Hood Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK HOOD SWITCH SIGNAL CIRCUIT 1
    1. Turn ignition switch OFF.
    2. Disconnect hood switch connector.
    3. Check voltage between hood switch harness connector and ground.
      VOLTAGE SPECIFICATION

      (+) (-) Voltage (V) (Approx.)
      Hood switch
      Connector Terminal
      E57 1 Ground 12

      Is the inspection result normal? 

      YES: GO TO  3.

      NO: GO TO 2.

  2. CHECK HOOD SWITCH SIGNAL CIRCUIT 2
    1. Disconnect IPDM E/R connector.
    2. Check continuity between IPDM E/R harness connector and hood switch harness connector.
      CONTINUITY SPECIFICATION

      IPDM E/R Hood switch Continuity
      Connector Terminal Connector Terminal
      E13 32 E57 1 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      CONTINUITY SPECIFICATION

      IPDM E/R Ground Continuity
      Connector Terminal
      E13 32 Not existed

      Is the inspection result normal? 

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

      NO: Repair or replace harness.

  3. CHECK HOOD SWITCH GROUND CIRCUIT

    Check continuity between hood switch harness connector and ground.

    CONTINUITY SPECIFICATION

    Hood switch Ground Continuity
    Connector Terminal
    E57 2 Existed

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace harness.

  4. CHECK HOOD SWITCH

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace hood switch.

  5. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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