SMART 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 power management control ECU detects a large amount of water.

DTC No. DTC Detection Condition Trouble Area
B2277 The submersion circuit monitor inside the power management control ECU detects a large amount of water. Power management control ECU

INSPECTION PROCEDURE

Note


  • When the power management control ECU is replaced with a new one and the cable from the negative (-) battery terminal is connected, the power source mode becomes the on (IG) mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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 DTC has been set again.

      OK
      DTC B2277 is not output.

      Tech Tips

      If there are any signs that water was present, before replacing the power source control ECU, take measures to prevent any further water entry.


    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here