Toyota 2GR-FE Manual page 918

ST–56
DTC
DESCRIPTION
This DTC is output when the submersion circuit monitor inside the main body ECU detects that the vehicle
is submerged in water.
HINT:
When the main body ECU 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 is replaced, perform the registration procedures for the engine immobiliser
system (See page EI-8).
DTC No.
B2277
INSPECTION PROCEDURE
1
CHECK FOR WATER DAMAGE
OK
2
CHECK DTC OUTPUT
OK
ST
END
2GR-FE STARTING – SMART KEY SYSTEM
B2277 Detecting Vehicle Submersion
DTC Detection Condition
Submersion circuit monitor inside main body ECU
detects that vehicle is submerged in water
(a) Check the main body ECU, peripheral components, and
(a) Delete the DTCs (See page ST-26).
(b) Check for DTCs again.
Main body ECU
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
HINT:
After all DTCs are cleared, check if the trouble occurs
again 30 seconds after the engine switch is turned on
(IG).
OK:
No DTC is output.
NG REPLACE MAIN BODY ECU
Trouble Area