DTC B278A: Short to GND in Immobiliser System Power Source Circuit [10/2014 - 10/2015]: Description
When there is a short to GND in the power supply for the transponder key amplifier of the power switch, the certification ECU (smart key ECU assembly) stores this DTC.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B278A | A short to GND in the power supply of the transponder key amplifier of the power switch (VC5 - VC5) (1 trip detection logic*). |
|
With the shift lever in P and the key held near the power switch, a hybrid control system start operation is performed by pressing and holding the power switch when the transmitter battery is depleted. |
- *: 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 when transmitter battery is depleted by holding key near power switch and pressing and holding power switch with shift lever in P | - |
RELATED DATA LIST AND ACTIVE TEST
| DTC Code | Data List and Active Test |
|---|---|
| B278A | - |