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Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 187 (Security Control System) >> DTC/Circuit Diagnosis >> Hood Switch >> Diagnosis Procedure

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 HOOD SWITCH SIGNAL
    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
      E30 2 Ground Battery voltage

      Is the inspection result normal? 

      YES: Go to  3.

      NO: Go to 2.

  2. CHECK HOOD SWITCH CIRCUIT
    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
      E9 104 E30 2 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      CONTINUITY SPECIFICATION

      IPDM E/R Ground Continuity
      Connector Terminal
      E9 104 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
    E30 1 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 lock (RH). Refer to "REMOVAL AND INSTALLATION " (Coupe models) or "REMOVAL AND INSTALLATION " (Roadster models).

  5. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END