B2277

2GR-FE STARTING: SMART KEY SYSTEM: B2277: Detecting Vehicle Submersion

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 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 Engine Immobiliser System (W/ Smart Key System).





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR WATER DAMAGE
(a) 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 -- Continue to next step.
2. CHECK DTC OUTPUT
(a) Delete the DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT: After all DTCs are cleared, check if the trouble occurs again 270 to 330 seconds after the engine switch is turned on (IG).
(b) Check for DTCs again.
OK:
No DTC is output.
NG -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
OK -- USE SYMPTOM METHOD TO CHECK