Evaporative Check Valve: Description and Operation
CANISTER CLOSE VALVEThe Canister Close Valve (CCV) closes off the air inlet to the Evaporative Emissions Canister for the Evaporative Emissions System leak detection inspection function. The CCV also prevents fuel vapors from escaping from the Evaporative Emissions Canister when the vehicle is not operating.
The canister close valve is an ON/OFF type which controls the inner pressure of fuel tank caused by fuel evaporation. It is used to close the evaporative system and to observe tank pressure respectively with the fuel tank pressure sensor.