Toyota Camry Hybrid AHV40 Manual page 248

EG-60
System Operation
1) Fuel Vapor-containment System
a. Parked (Power Source Mode OFF)
The THS ECU seals the fuel vapor in the fuel tank by closing the fuel vapor-containment valve. If, at
this time, the internal pressure of the fuel tank increases to a level that activates the fuel outlet valve
located in the fuel vapor-containment valve, the fuel outlet valve opens to release the internal pressure
of the fuel tank. This prevents the internal pressure in the fuel tank from increasing abnormally.
THS
ECU
b. Refueling Wait
When the fuel filler door switch is turned ON, the THS ECU opens the fuel vapor-containment valve,
allowing the fuel vapor to be absorbed by the canister and reducing the pressure in the fuel tank. The
fuel filler door will not open unless the internal pressure of the fuel tank decreases to a level close to
the atmospheric pressure. In addition, the multi-information display will show the "PLEASE WAIT
NOW OPENING".
Fuel Filler Door Switch (ON)
THS
ECU
Filler Door
Courtesy Switch
ENGINE - 2AZ-FXE ENGINE
Fuel Outlet Valve
(Close)
Fuel Tank
Pressure Sensor
Fuel Filler
Fuel Outlet
Door Opener
Valve (Close)
Fuel Vapor-containment
Valve (Close)
Canister
02HEG29Y
Multi-information Display
Fuel Vapor-containment
Valve (Open)
Canister
02HEG30Y