DESCRIPTION
This DTC is stored when a malfunction in the water submersion detection circuit in the certification ECU (smart key ECU assembly) is detected.
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
DTC Code |
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 cable to the negative (-) battery terminal. |
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
The engine switch cannot be turned off and the engine cannot be started. |
- |
CAUTION / NOTICE / HINT
NOTICE:
Click here
Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
DTC |
Data List Item |
Active Test Item |
---|---|---|
B2277 |
- |
- |
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
1. |
CHECK WATER INTRUSION |
(a) Check that the certification ECU (smart key ECU assembly), its surrounding area and wire harnesses have no signs of water intrusion.
Result
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 FOR WATER INTRUSION AND REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal. Therefore, make sure to read the
disconnecting the cable from the negative (-) battery terminal notices before pr ...
Initialization
INITIALIZATION
1. RESET MEMORY
NOTICE:
Perform Reset Memory (AT initialization) when replacing the automatic
transmission assembly, transmission valve body assembly or any of the shift
solenoid valves.
Reset Memory can be performed only with the Techstream.
HINT:
The E ...
High Beam Headlight Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing
the following inspection procedure.
If the main body ECU (multip ...