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 management control ECU*1 or power source control ECU*2 detects that the vehicle is submerged in water.

Tech Tips

When the power management control ECU*1 or power source control ECU*2 is replaced with a new one and the cable is connected to the negative (-) battery terminal, 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 The submersion circuit monitor inside power management control ECU*1 or power source control ECU*2 detects that vehicle is submerged in water

  • Power management control ECU*1

  • Power source control ECU*2

*1: for 1KR-FE and 1NR-FE

*2: for 1ND-TV

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR WATER DAMAGE


    1. Check the power management control ECU*1 or power source control ECU*2, peripheral components, and wire harnesses for traces of water.

      *1: for 1KR-FE and 1NR-FE

      *2: for 1ND-TV

      Result
      Result Proceed to
      There are traces of water (for 1KR-FE and 1NR-FE) A
      There are no traces of water (for 1KR-FE and 1NR-FE) B
      There are traces of water (for 1ND-TV) C
      There are no traces of water (for 1ND-TV) D

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    C

    TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE POWER SOURCE CONTROL ECU

    D

    REPLACE POWER SOURCE CONTROL ECU Click here

    A

    TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE POWER MANAGEMENT CONTROL ECU