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 -

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.

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

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

PROCEDURE


  1. REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Temporarily replace the hybrid vehicle control ECU assembly with a new one.

      Click here

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  2. CLEAR DTC


    1. Clear the DTCs.


      Powertrain > Hybrid Control > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTC


    1. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      OK
      B279C is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HYBRID VEHICLE CONTROL ECU ASSEMBLY WAS DEFECTIVE)

    NG

    USE SIMULATION METHOD TO CHECK Click here