B2277

2AZ-FXE STARTING: SMART KEY SYSTEM: B2277: Detecting Vehicle Submersion

DTC B2277 - Detecting Vehicle Submersion

DESCRIPTION

This DTC is output when the submersion circuit monitor inside the main body ECU detects that the vehicle is submerged in water.
HINT: When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
After the main body ECU is replaced, perform the registration procedures for the engine immobiliser system Programming and Relearning.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR WATER DAMAGE
(a) Check the main body ECU, peripheral components, and wire harnesses for traces of water.
OK:
There are no traces of water.
NG -- TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE MAIN BODY ECU
OK -- Continue to next step.
2. CHECK DTC OUTPUT
(a) Delete the DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT: After all DTCs are cleared, check if the trouble occurs again 30 seconds after the power switch is turned on (IG).
(b) Check for DTCs again.
OK:
No DTC is output.
NG -- REPLACE MAIN BODY ECU
OK -- END