LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2024 (Body, Lock & Security System) >> NVIS(NISSAN Vehicle Immobilizer System-NATS) >> Diagnostic Procedure 6

Diagnostic Procedure 6

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

"SECURITY INDICATOR LAMP DOES NOT LIGHT UP" 

  1. CHECK FUSE 

    Check 10A fuse [No.19, located in the fuse block (J/B)].

    OK or NG 

    OK: GO TO 2.

    NG: Replace fuse.

  2. CHECK SECURITY INDICATOR LAMP 
    1. Install 10A fuse.
    2. Start engine and turn ignition switch OFF.
    3. Check the security indicator lamp lights up.

      Security indicator lamp should light up. 

    OK or NG 

    OK: Inspection End.

    NG: GO TO 3.

  3. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT 
    1. Disconnect combination meter.
    2. Check voltage between combination meter connector M24 terminal 3 and ground.

      3 - Ground : Battery voltage 

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

    Fig 1: Checking Voltage Between Combination Meter Connector M24 Terminal And Ground
    G04912833
  4. CHECK BCM (NATS CONTROL UNIT) FUNCTION 
    1. Connect combination meter.
    2. Disconnect BCM.
    3. Check voltage between BCM connector M18 terminal 23 and ground.

      23 - Ground : Battery voltage 

    OK or NG 

    OK: BCM is malfunctioning.

    • Replace BCM.

      Ref. part No. A 

    • Perform initialization with CONSULT-II.
    • For initialization, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS. .
      Fig 2: Checking Voltage Between BCM Connector M18 Terminal 23 And Ground
      G04902532

    NG: Check the following:

    • Harness for open or short between combination meter and BCM (NATS control unit).
    • Combination meter