LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 1675 (Body, Lock & Security System) >> Vehicle Security (Theft Warning) System >> Diagnostic Procedure 2 >> Security Indicator Lamp Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Security Indicator Lamp Check

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. SECURITY INDICATOR LAMP ACTIVE TEST 

    With CONSULT-II

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

    Fig 1: CONSULT-II Screen Display - Active Test
    G04175850Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II

    1. Turn ignition switch OFF.
    2. Check voltage between BCM harness connector M18 terminal 23 and ground.
    SECURITY INDICATOR LAMP ACTIVE TEST

    Connector Terminal Security indicator lamp condition Voltage (V) (Approx.)
    (+) (-)
    M18 23 Ground Illuminated 0
    Not illuminated Battery voltage
    Fig 2: Checking Voltage Between BCM Harness Connector M18 Terminal 23 And Ground
    G04175851Courtesy 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 security indicator lamp condition. Refer to "SELF-DIAGNOSIS FUNCTION "

    OK or NG 

    OK: GO TO 3.

    NG: Replace combination meter. Refer to "COMBINATION METER "

  3. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and combination meter connector.
    3. Check continuity between BCM connector M18 terminal 23 and combination meter harness connector M24 terminal 39.

      23 - 39: Continuity should exist. 

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

    23 - Ground: Continuity should not exist. 

    Fig 3: Checking Continuity Between BCM Connector M18 Terminal 23 And Ground
    G04175852Courtesy of NISSAN MOTOR CO., U.S.A.

    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.