DTC B2277 Detecting Vehicle Submersion

DESCRIPTION

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

DTC Code	Detection Condition	Trouble Area
B2277	The submersion circuit monitor inside the main body ECU detects that the vehicle is submerged in water.	Main body ECU

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

1.CHECK WHETHER DTC OUTPUT RECURS

Clear the DTCs ().

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

NG

REPLACE MAIN BODY ECU

OK

USE SIMULATION METHOD TO CHECK ()