DTC Code | DTC Name |
---|---|
B2277 | Detecting Vehicle Submersion |
DESCRIPTION
This DTC is stored when a malfunction in the water submersion detection circuit in the certification ECU (smart key ECU assembly) is detected.
DTC No. | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
---|---|---|---|
B2277 | The water submersion detection circuit in the certification ECU (smart key ECU assembly) 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 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. |
DTC No. | Data List Item | Active Test Item |
---|---|---|
B2277 | - | - |
CAUTION / NOTICE / HINT
Note
When using the intelligent tester with the engine switch off to troubleshoot:
Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
The entry and start system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting Click here.
Before replacing the certification ECU (smart key ECU assembly), refer to the entry and start system (for Entry Function) Click here.
After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.
Tech Tips
Before proceeding with troubleshooting, check if there are any signs of water damage to the certification ECU (smart key ECU assembly). If there are any signs of water damage, replace the certification ECU (smart key ECU assembly) and take measures against the cause of the water damage.
PROCEDURE
CHECK FOR WATER DAMAGE
Check the certification ECU (smart key ECU assembly), peripheral components, and wire harnesses for traces of water.
Result | Proceed to |
---|---|
There are traces of water | A |
There are no traces of water | B |
A |
TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
B |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |