DESCRIPTION This DTC is
stored when a malfunction in the water submersion detection circuit
inside the certification ECU (smart key ECU assembly) is detected. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note | | B2277 |
Detecting Vehicle Submersion |
Water
submersion detected by the water submersion detection circuit inside
the certification ECU (smart key ECU assembly). (1-trip detection
logic*) | Certification ECU (smart key ECU assembly) |
- Wait 300 seconds after connecting the cable to the negative (-) battery terminal.
|
- *: Only detected while a malfunction is present.
Vehicle Condition and Fail-safe Function when Malfunction Detected |
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected | |
The engine switch cannot be turned off and the engine cannot be started. |
- | Related Data List and Active Test Items |
DTC No. | Data List and Active Test | |
B2277 | - | CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the engine switch off, connect the
Techstream to the DLC3 and turn a courtesy light switch on and off at
intervals of 1.5 seconds or less until communication between the
Techstream and the vehicle begins. Then select the vehicle type under
manual mode and enter the following menus: Body Electrical / Smart Key.
While using the Techstream, periodically turn a courtesy light switch on
and off at intervals of 1.5 seconds or less to maintain communication
between the Techstream and the vehicle.
- The smart key system (for Start Function, Gasoline Model) uses the LIN
communication system and CAN communication system. Inspect the
communication function by following How to Proceed with Troubleshooting.
Troubleshoot the smart key system (for Start Function, Gasoline Model)
after confirming that the communication systems are functioning
properly.
Click here 
- Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
Click here
- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
HINT: 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
(a)
Check that the certification ECU (smart key ECU assembly), its ground
area and wire harnesses have no signs of water intrusion.
|
Result | Proceed to | |
No sign of water intrusion found |
A | | Signs of water intrusion found |
B |
| A |
 | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| B |
| TAKE MEASURES AGAINST WATER INTRUSION AND REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | |
