IMMOBILISER SYSTEM(w/o 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 immobiliser system is installed, the ECM stores this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

B279C

Theft Deterrent System Presence Detection

An ECM that is incompatible with immobiliser system is installed.

ECM

  • DTC Output Confirmation Operation:

  • Check for DTCs.
Table 1. Vehicle Condition and Fail-safe Operation when Malfunction Detected

Vehicle Condition when Malfunction Detected

Fail-safe Operation when Malfunction Detected

Engine cannot be started

-
Table 2. Related Data List and Active Test

DTC No.

Data List and Active Test

B279C

-

CAUTION / NOTICE / HINT

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. CLEAR DTC

    1. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    Result

    Proceed to

    NEXT
    NEXT

  2. CHECK FOR DTC

    1. Perform "DTC Output Confirmation Operation" procedure.

    2. Check for DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      OK

      DTC 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 ECM

    1. Temporarily replace the ECM with a new one.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    END