Dtc B2277 Detecting Vehicle Submersion

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
3Zr-Fae Starting. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

INSPECTION PROCEDURE

CHECK WHETHER DTC OUTPUT RECURS

DTC B2277 Detecting Vehicle Submersion


DESCRIPTION

This DTC is stored when the submersion circuit monitor inside the main body ECU detects that the vehicle has been submerged in water.

DTC Code
DTC Detection Condition
Trouble Area
B2277
Submersion circuit monitor inside the main body ECU detects that the vehicle is submerged in water.
Main body ECU

INSPECTION PROCEDURE

HINT:
Before commencing troubleshooting, check if the main body ECU is wet. If it is, replace the main body ECU.
1.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the intelligent tester on.

  1. Enter the following menus: Body / Main Body / DTC.

  1. Clear the DTCs.

  1. Check whether DTC B2277 recurs 270 to 330 seconds or more after the engine switch is turned on (IG).

    OK:
    No DTC is output.


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

USE SIMULATION METHOD TO CHECK (RAV4_ACA30 RM000000UZ306OX.html)