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 (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Turn the power switch on (IG).

    3. After 330 seconds have elapsed, check if the DTC has been set again.

      Result
      Result Proceed to
      DTC B2277 is not output. A
      DTC B2277 is output (for LHD). B
      DTC B2277 is output (for RHD). C

      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.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here

    C

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here