Toyota Tundra Service Manual: Theft Deterrent System Presence Detection (B279C)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

B279C

Theft Deterrent System Presence Detection

An ECM that is incompatible with the engine immobiliser system is installed (1 trip detection logic*).

ECM

  • Check for DTCs.
  • *: Only output while a malfunction is present.
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 No.

Data List and Active Test

B279C

-

CAUTION / NOTICE / HINT

NOTICE:

  • If the ECM is replaced, refer to Registration.

    Click here

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

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Click here

NEXT

2.

CHECK FOR DTC

(a) Start the engine.

(b) Check for DTCs.

Click here

HINT:

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

OK:

DTC B279C is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

3.

REPLACE ECM

(a) Replace the current ECM with the proper ECM.

  • for 1UR-FE:

    Click here

  • for 3UR-FE:

    Click here

  • for 3UR-FBE:

    Click here

NEXT

END

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