Dtc B2277 Detecting Vehicle Submersion

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR WATER DAMAGE

CHECK FOR DTC

DTC B2277 Detecting Vehicle Submersion


DESCRIPTION

This DTC is output when the submersion circuit monitor inside the main body ECU (instrument panel junction block) detects that the vehicle is submerged in water.
HINT:
When the main body ECU (instrument panel junction block) is replaced with a new one and the cable from 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.
After the main body ECU (instrument panel junction block) is replaced, perform the registration procedures for the engine immobiliser system (COROLLA_ZRE142 RM000000QYF05AX.html).

DTC No.
DTC Detection Condition
Trouble Area
B2277
Submersion circuit monitor inside main body ECU (instrument panel junction block) detects that vehicle is submerged in water
Main body ECU (instrument panel junction block)

INSPECTION PROCEDURE

1.CHECK FOR WATER DAMAGE

  1. Check the main body ECU (instrument panel junction block), peripheral components, and wire harnesses for traces of water.

    OK:
    There are no traces of water.


NG
TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
OK


2.CHECK FOR DTC

  1. Clear the DTC (COROLLA_ZRE142 RM000000YEH0CGX.html).

  1. Turn the engine switch on (IG).

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

    OK:
    DTC B2277 is not output.


NG
REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
OK

USE SIMULATION METHOD TO CHECK (COROLLA_ZRE142 RM000000UZ108OX.html)