DTC B2277: Detecting Vehicle Submersion: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Check whether DTC B2277 is output 30 seconds or more after the engine switch is turned on (IG).

   OK

   No DTC is output.

NG → REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) 

OK → See step   2