LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Security Control System (With Intelligent Key System) >> DTC/Circuit Diagnosis >> Hood Switch >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 (V) (Approx.)
      Hood switch
      Connector Terminal
      E30 2 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.
      IPDM E/R Hood switch Continuity
      Connector Terminal Connector Terminal
      E5 24 E30 2 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      IPDM E/R Ground Continuity
      Connector Terminal
      E5 24 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.

    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 "HOOD LOCK: REMOVAL AND INSTALLATION ".

  5. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END