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Home >> Infiniti >> 2011 >> EX35 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Security Control System (CROSSCABRIOLET)) >> DTC/Circuit Diagnosis >> Trunk Key Cylinder Switch >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TRUNK KEY CYLINDER SWITCH INPUT SIGNAL
    1. Turn ignition switch OFF.
    2. Disconnect trunk key cylinder switch connector.
    3. Measure voltage between trunk key cylinder switch harness connector and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage (Approx.)
      Trunk key cylinder switch
      Connector Terminal
      T11 1 Ground 12 V

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 2.

  2. CHECK TRUNK KEY CYLINDER SWITCH SIGNAL CIRCUIT
    1. Disconnect BCM connector.
    2. Measure continuity between BCM harness connector and trunk key cylinder switch harness connector.
      CONTINUITY REFERENCE CHART

      BCM Trunk key cylinder switch Continuity
      Connector Terminal Connector Terminal
      M121 49 T11 1 Existed
    3. Measure continuity between BCM harness connector and ground.
      CONTINUITY REFERENCE CHART

      BCM Ground Continuity
      Connector Terminal
      M121 49 Not existed

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair or replace harness.

  3. REPLACE BCM
    1. Replace BCM. Refer to , "REMOVAL AND INSTALLATION ".
    2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

      INSPECTION END

  4. CHECK TRUNK KEY CYLINDER SWITCH GROUND CIRCUIT

    Measure continuity between trunk key cylinder switch harness connector and ground.

    CONTINUITY REFERENCE CHART

    Trunk key cylinder switch Ground Continuity
    Connector Terminal
    T11 2 Existed

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Repair or replace harness.

  5. CHECK TRUNK KEY CYLINDER SWITCH

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Replace trunk key cylinder switch.

  6. CHECK INTERMITTENT INCIDENT

    Refer to , "INTERMITTENT INCIDENT ".

    INSPECTION END