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

DTC Code DTC Name
B2277 Detecting Vehicle Submersion

DESCRIPTION

This DTC is output when the submersion circuit monitor inside the power source control ECU detects that the vehicle is submerged in water.

Tech Tips

When the power source control 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.

DTC No. DTC Detection Condition Trouble Area
B2277 Submersion circuit monitor inside power source control ECU detects that vehicle is submerged in water Power source control ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Turn the engine switch on (IG).

    3. After 330 seconds have elapsed, check if the trouble occurs again.

      OK
      DTC B2277 is not output.

    NG

    REPLACE POWER SOURCE CONTROL ECU

    OK

    USE SIMULATION METHOD TO CHECK Click here