DTC B2277: Detecting Vehicle Submersion: Description
This DTC is stored when a malfunction in the water submersion detection circuit in the power management control ECU is detected.
HINT:
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode changes to on (IG).
- When the battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2277 | The water submersion detection circuit in the power management control ECU detects water submersion (1-trip detection logic*). |
|
Wait 300 seconds after connecting the battery cable. |
- *: Only output while a malfunction is present and the engine switch is on (IG)
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| The engine cannot be turned off and the engine cannot be started. | The power source mode changes to on (IG) and starter relay activation is prohibited. |