Toyota Corolla Cross: Engine Immobiliser System Incorrect Assembly (B279C95)
Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System (for Start Function, Gasoline Model) / Engine Immobiliser System Incorrect Assembly (B279C95)
DESCRIPTION
If a ECM that is incompatible with the immobiliser function is installed, the ECM will store this DTC.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note |
|---|---|---|---|---|
| B279C95 |
Engine Immobiliser System Incorrect Assembly |
A ECM that is incompatible with the immobiliser function is installed. (1-trip detection logic*) |
ECM | - |
- *: Only detected while a malfunction is present.
|
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
|---|---|
|
Engine cannot be started | - |
|
DTC No. | Data List and Active Test |
|---|---|
|
B279C95 | - |
CAUTION / NOTICE / HINT
NOTICE:
- When using the GTS with the ignition 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 the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. 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.
- The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
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- Before replacing the ECM, refer to Registration.
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- After performing repairs, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
- When the ECM is replaced, update the ECU security key.
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PROCEDURE
|
1. | REPLACE ECM |
(a) Temporarily replace the ECM with a new one.
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| NEXT | .gif) | END (ECM WAS DEFECTIVE) |
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Crankshaft Position Sensor "A" Signal Compare Failure (P033562)
DESCRIPTION These DTCs are stored when the engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match.
DTC No. Detection Item
SEE MORE:
Right Front Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open
(C14E314)
DESCRIPTION
Refer to DTC C050612
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DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C14E314
Right Front Wheel Speed Sensor Supply Voltage Circuit
Short to Ground or Open
An open or short i
Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT DOOR AMBIENT LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH)
(a) Check the illumination.
(1) Apply auxiliary battery voltage to the front door ambient light LH (front door trim board sub-assembly LH) and check that the light illuminates.
OK:
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