DTC B279A: Theft Deterrent System Communication Line High Fixation [08/2013 - ]: Description
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
When the communication line (IMI - EFIO) between the power management control ECU and ID code box (immobiliser code ECU) is stuck high, the power management control ECU stores this DTC.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B279A | The communication line (IMI - EFIO) between the power management control ECU and ID code box (immobiliser code ECU) is stuck high (1 trip detection logic*). |
|
Turn the power switch on (IG) and wait 6 seconds. |
- *: 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 |
|---|---|
| Hybrid control system cannot be started | Hybrid control system cannot be started |
RELATED DATA LIST AND ACTIVE TEST
| DTC Code | Data List and Active Test |
|---|---|
| B279A | - |