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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 679 (Security Control System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> Security Indicator Lamp >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. 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 (V)

      Combination meter

      Connector

      Terminal

      M24

      22

      Ground

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Check 10 A fuse [No. 13, located in the fuse block (J/B)].

    NO

    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 (V)

      BCM

      Connector

      Terminal

      M18

      18

      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.

    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.

      Combination meter

      BCM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M24

      6

      M18

      18

      Yes

    3. Check continuity between combination meter harness connector and ground.

      Combination meter

      Ground

      Continuity

      Connector

      Terminal

      M24

      6

      No

    Is the inspection result normal?

    YES

    Replace combination meter. Refer to Removal and Installation .

    NO

    Repair or replace harness.