ENGINE IMMOBILISER SYSTEM (w/ Smart Entry and Start System), Diagnostic DTC:B279C, B279C95

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

DESCRIPTION

This code is stored when an ECM that is incompatible with the engine immobiliser system is installed to the vehicle.

DTC Code DTC Detection Condition Trouble Area DTC Output Confirmation Operation
B279C An ECM that is incompatible with the engine immobiliser system is installed (1 trip detection logic*). 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 Code Data List and Active Test

  • B279C*1

  • B279C95*2

 -

INSPECTION PROCEDURE

PROCEDURE


  1. REPLACE ECM


    1. Temporarily replace the ECM with a new one Click here for 2GR-FE, Click here for 2AR-FE, Click here for 6AR-FSE).


    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. Check for DTCs Click here.

      OK
      B279C*1 or B279C95*2 is not output.
      Result
      Result Proceed to
      DTC B279C*1 or B279C95*2 is not output A
      DTC B279C*1 or B279C95*2 is output B

      • *1: for 2GR-FE or 2AR-FE

      • *2: for 6AR-FSE


    B

    USE SIMULATION METHOD TO CHECK Click here

    A

    END (ECM WAS DEFECTIVE)