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Home >> Toyota >> 2003 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 856 (Security Control System (With Intelligent Key System)) >> DTC/Circuit Diagnosis >> Vehicle Security Indicator >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. SECURITY INDICATOR LAMP ACTIVE TEST 

    With CONSULT

    Check "THEFT IND" in "ACTIVE TEST" mode with CONSULT.

    Without CONSULT

    1. Disconnect BCM.
    2. Check voltage between BCM harness connector M18 terminal 23 and ground.
      Connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      M18 23 Ground ON 0
      OFF Battery voltage
      Fig 1: Checking Voltage Between BCM Harness Connector M18 Terminal 23 And Ground
      G04902532Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Security indicator lamp is OK.

      NO: GO TO 2

  2. SECURITY INDICATOR LAMP CHECK 

    Check security indicator lamp condition.

    Is the inspection result normal? 

    YES: GO TO 3

    NO: Replace security indicator lamp.

  3. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and security indicator lamp connector.
    3. Check continuity between BCM connector M18 (A) terminal 23 and security indicator lamp harness connector M24 (B) terminal 28.

      23 - 28: Continuity should exist. 

    4. Check continuity between BCM connector M18 (A) terminal 23 and ground.

      23 - Ground: Continuity should not exist. 

      Fig 2: Checking Continuity Between BCM Connector M18 (A) Terminal 23 And Ground
      G04902533Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Check the following:

      • 10A fuse [No. 19, located in fuse block (J/B)]
      • Harness for open or short between security indicator lamp and fuse

      NO: Repair or replace harness.