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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R Spec V >> Repair and Diagnosis >> External Pages >> Different car >> Section 2076 (Body, Lock & Security System) >> Vehicle Security (Theft Warning) System >> Diagnostic Procedure 2 >> Security Indicator Lamp Check
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Security Indicator Lamp Check

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. SECURITY INDICATOR LAMP ACTIVE TEST 

    With CONSULT-III

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

    Without CONSULT-III

    1. Disconnect BCM.
    2. Check voltage between BCM harness connector M18 terminal 23 and ground.
      BCM HARNESS CONNECTOR M18 TERMINAL 23 AND GROUND

      Connector Terminals Voltage (V) (Approx.)
      (+) (-)
      M18 23 Ground Battery voltage
      Fig 1: Checking Voltage Between BCM Harness Connector M18 Terminal 23 And Ground
      G04902532Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Security indicator lamp is OK.

    NG: GO TO 2.

  2. SECURITY INDICATOR LAMP CHECK 

    Check indicator lamp condition.

    OK or NG 

    OK: GO TO 3.

    NG: Replace indicator lamp.

  3. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and security indicator lamp.
    3. Check continuity between BCM connector (A) M18 terminal 23 and security indicator lamp harness connector (B) M37 terminal 2.
      Fig 2: Checking Harness Continuity
      G04916939Courtesy of NISSAN MOTOR CO., U.S.A.

      23 - 2: Continuity should exist. 

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

      23 - Ground: Continuity should not exist. 

    OK or NG 

    OK: Check the following:

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

    NG: Repair or replace harness.