IMMOBILISER SYSTEM, Diagnostic DTC:B279C

DTC Code DTC Name
B279C Theft Deterrent System Presence Detection

DESCRIPTION

If a hybrid vehicle control ECU assembly that is incompatible with the immobiliser system is installed, the hybrid vehicle control ECU assembly stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B279C Theft Deterrent System Presence Detection A hybrid vehicle control ECU assembly that is incompatible with the immobiliser system is installed (1-trip detection logic*). Hybrid vehicle control ECU assembly

DTC output confirmation operation:


  • Check for DTCs.

Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
Hybrid control system cannot be started -
Related Data List and Active Test
DTC No. Data List and Active Test
B279C -

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the power 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.

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

  • When replacing the hybrid vehicle control ECU assembly refer to Service Bulletin.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.


      Powertrain > Hybrid Control > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes

      Tech Tips

      Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.

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

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE CURRENT HYBRID VEHICLE CONTROL ECU ASSEMBLY WITH PROPER HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Replace the current hybrid vehicle control ECU assembly with the proper hybrid vehicle control ECU assembly.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

    END