Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Engine Immobiliser System Incorrect Assembly (B279C95)

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Immobiliser System (w/o Smart Key System) / Engine Immobiliser System Incorrect Assembly (B279C95)

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

B279C95

Engine Immobiliser System Incorrect Assembly

An ECM that is incompatible with immobiliser system is installed.

ECM

 DTC Output Confirmation Operation:
  • 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 No.

Data List and Active Test

B279C95

-

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.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

END (ECM WAS DEFECTIVE)

    READ NEXT:

     Engine does not Start but Initial Combustion Occurs

    DESCRIPTION If the key ID codes of the door control transmitter assembly and transponder key ECU assembly match, the immobiliser system is unset and the engine start permission signal is sent to the E

     Key Cannot be Registered

    DESCRIPTION A maximum of 5 key ID codes can be registered. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: If the transponder key ECU assembly is replaced, refer to Registration. Click here PR

     Security Horn Assembly

    RemovalREMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 SECURITY HORN ASSEMBLY 86510A - - - PROCEDURE 1. REMO

    SEE MORE:

     ACC Circuit Short to Ground (B227411)

    DESCRIPTION This DTC is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit between terminal ACCD of the certification ECU (smart key ECU assembly) and the ACC relay. DTC No. Detection Item DTC Detection Condition Trouble Area No

     Driver Side Electrical Antenna Circuit Open (B27A113)

    DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for driver door) (electrical key antenna) at intervals of 0.25 seconds. For the front door outside handle assembly (for driver door) (electrical k

    © 2020-2025 Copyright www.tcorollacross.com