ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2277

DTC Code DTC Name
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

INSPECTION PROCEDURE

Tech Tips

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


    1. Clear the DTCs Click here.

    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

    OK

    USE SIMULATION METHOD TO CHECK Click here