DTC B279A: Anomaly on the IMI High Port (Loss of Communication with IMMO) [11/2021 - ]: Description
When the communication line (IMI - EFIO) between the ECM and ID code box (immobilizer code ECU) is stuck high, the ECM stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| B279A-12 | Engine Immobilizer System Circuit Short to Battery | The communication line (IMI - EFIO) between the ECM and ID code box (immobilizer code ECU) is stuck high. (1 trip detection logic*) |
|
DTC output confirmation operation:
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- *: 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 | Engine cannot be started |
RELATED DATA LIST AND ACTIVE TEST
| DTC No. | Data List and Active Test |
|---|---|
| B279A-12 | - |