ENGINE IMMOBILISER SYSTEM (w/o Smart Entry and Start System), Diagnostic DTC:B279C

DTC Code DTC Name
B279C Theft Deterrent System Presence Detection

DESCRIPTION

If an ECM that is incompatible with the engine immobiliser system is installed, the ECM stores this DTC.

DTC No. DTC Detection Condition Trouble Area DTC Output Confirmation Operation
B279C An ECM that is incompatible with engine immobiliser system is installed. ECM Check for DTCs.
Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected
Engine cannot be started -
Related Data List and Active Test
DTC No. Data List and Active Test
B279C -

INSPECTION PROCEDURE

Note


  • If the ECM is replaced, refer to Service Bulletin.

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE


  1. REPLACE ECM


    1. Temporarily replace the ECM with a new one Click here.


    NEXT

  2. REGISTER ECU COMMUNICATION ID


    1. Register the ECU communication ID.

      Tech Tips

      Refer to Service Bulletin.


    NEXT

  3. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  4. CHECK FOR DTC


    1. Perform "DTC Output Confirmation Operation" procedure.

    2. Check for DTCs Click here.

      OK
      DTC B279C is not output.
      Result
      Result Proceed to
      DTC B279C is not output A
      DTC B279C is output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

    END (ECM WAS DEFECTIVE)