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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Security Control System) >> DTC/Circuit Diagnosis >> Security Indicator Lamp >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  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 SPECIFICATION

      (+) (-) Voltage (V) (Approx.)
      Combination meter
      Connector Terminal
      M34 1 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO 2.

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

      NO-2: Check 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 SPECIFICATION

      (+) (-) Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M68 23 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: GO TO  4.

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

      For initialization and registration procedures, refer to the CONSULT-III Operation Instructions NATS-IVIS/NVIS.

      INSPECTION END

  4. CHECK SECURITY INDICATOR LAMP CIRCUIT
    1. Disconnect combination meter connector.
    2. Check continuity between combination meter harness connector and BCM harness connector.
      CONTINUITY SPECIFICATION

      Combination meter BCM Continuity
      Connector Terminal Connector Terminal
      M34 28 M68 23 Existed
    3. Check continuity between combination meter harness connector and ground.
      CONTINUITY SPECIFICATION

      Combination meter Ground Continuity
      Connector Terminal
      M34 28 Not existed

      Is the inspection result normal? 

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

      NO: Repair or replace harness.