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Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 33 (Security Control System (Coupe)) >> DTC/Circuit Diagnosis >> Security Indicator Lamp >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect combination meter connector.
    3. Check voltage between combination meter harness connector and ground.
      (+) (-) Voltage (V) (Approx.)
      Combination meter
      Connector Terminal
      M53 1 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO 2.

      NO-1: 10A fuse [No. 11, located in the fuse block (J/B)].

      NO-2: Harness for open or short between combination meter and fuse.

  2. CHECK SECURITY INDICATOR LAMP SIGNAL
    1. Connect combination meter connector.
    2. Disconnect BCM connector.
    3. Check voltage between BCM harness connector and ground.
      (+) (-) Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M123 141 Ground Battery voltage

      Is the inspection result normal? 

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

      NO: GO TO 3.

  3. CHECK COMBINATION METER CIRCUIT
    1. Disconnect BCM connector.
    2. Check continuity between combination meter harness connector and BCM harness connector.
      Combination meter BCM Continuity
      Connector Terminal Connector Terminal
      M53 10 M123 141 Existed
    3. Check continuity between combination meter harness connector and ground.
      Combination meter Ground Continuity
      Connector Terminal
      M53 10 Not existed

      Is the inspection result normal? 

      YES: Replace combination meter. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.