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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Theft Deterrent / Keyless Entry) >> Engine Immobilizer System >> DTC B279C: Theft Deterrent System Presence Detection >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If the ECM is replaced, register the ECU communication ID (See REGISTRATION  ).
  1. CHECK DTC OUTPUT 
    1. Clear the DTCs (See DTC CHECK / CLEAR  )
    2. Recheck for DTCs

      OK: DTC B279C output does not recur. 

    NG: REPLACE ECM  (See REMOVAL )

    OK: USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )