IMMOBILISER SYSTEM, Diagnostic DTC:B279C, B279C95

DTC Code DTC Name
B279C Theft Deterrent System Presence Detection
B279C95 Engine Immobiliser System Incorrect Assembly

DESCRIPTION

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

Tech Tips


  • DTC B279C : for 2AR-FE

  • DTC B279C95 : for 2GR-FKS

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B279C Theft Deterrent System Presence Detection An ECM that is incompatible with the immobiliser system is installed. (1-trip detection logic*) ECM -
B279C95 Engine Immobiliser System Incorrect Assembly An ECM that is incompatible with the immobiliser system is installed. (1-trip detection logic*) ECM -

Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
Engine cannot be started -
Related Data List and Active Test
DTC No. Data List and Active Test

  • B279C*1

  • B279C95*2

 -

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • Before replacing the ECM 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.

      for 2GR-FKS: Click here

      for 2AR-FE: Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CLEAR DTC


    1. Clear the DTCs.


      1. for 2AR-FE


        Powertrain > Engine and ECT > Clear DTCs

      2. for 2GR-FKS


        Powertrain > Engine > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTC


    1. Check for DTCs.


      1. for 2AR-FE


        Powertrain > Engine and ECT > Trouble Codes

      2. for 2GR-FKS


        Powertrain > Engine > Trouble Codes
        OK
        B279C*1 or B279C95*2 is not output.

        • *1: for 2AR-FE

        • *2: for 2GR-FKS

      Result
      Result Proceed to
      DTC B279C is not output (for 2AR-FE) A
      DTC B279C95 is not output (for 2GR-FKS)
      DTC B279C is output (for 2AR-FE) B
      DTC B279C95 is output (for 2GR-FKS)

    A

    END (ECM WAS DEFECTIVE)

    B

    USE SIMULATION METHOD TO CHECK Click here