B2277

1UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2277: Detecting Vehicle Submersion
B2277 - Detecting Vehicle Submersion

DESCRIPTION

This DTC is output when the submersion circuit monitor inside the main body ECU detects that the vehicle has been submerged in water.





INSPECTION PROCEDURE

HINT
Before commencing troubleshooting, check if the main body ECU is wet. If it is, replace the main body ECU.

PROCEDURE

1. CHECK WHETHER DTC OUTPUT RECURS

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check whether DTC B2277 recurs 30 seconds or more after the engine switch is turned on (IG).

OK:

No DTC is output.

NG -- REPLACE MAIN BODY ECU

OK -- END (SYSTEM IS OK)