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Home >> Nissan-Datsun >> 2005 >> Sentra SE-R Spec V >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (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 2007 Nissan Sentra. 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.
      CONNECTOR TERMINAL VOLTAGE SPECIFICATION

      Connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      M18 23 Ground ON 0
      OFF Battery voltage

    OK or NG 

    OK: Security indicator lamp is OK.

    NG: GO TO 2.

    Fig 1: Checking Voltage Between BCM Harness Connector M18 Terminal 23 And Ground
    G04902532
  2. SECURITY INDICATOR LAMP CHECK 

    Check security indicator lamp condition.

    OK or NG 

    OK: GO TO 3.

    NG: Replace security indicator lamp.

  3. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and combination meter.
    3. Check continuity between BCM connector M18 (A) terminal 23 and combination meter connector M24 (B) terminal 16.

      23 - 16 : Continuity should exist. 

    4. Check continuity between BCM connector M18 (A) 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 combination meter and fuse

    NG: Repair or replace harness.

    Fig 2: Checking Continuity Between BCM Connector M18 Terminal 23 And Ground
    G04927770