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DTC    B2277    Detecting Vehicle Submersion

for Preparation Click here


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

NOTICE:
  1. 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.

1.CHECK FOR DTC

  1. Clear the DTC (Click here).

  1. Turn the power switch on (IG).

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

    OK:
    DTC B2277 is not output

HINT:
If there are any signs that water was present, before replacing the power management 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)