Evaporative Check Valve: Description and Operation

EVAP Two-Way Valve
The EVAP two way valve is installed between the fuel tank and the EVAP canister line.

The EVAP two way valve sends fuel vapor to the EVAP canister corresponding to the pressure inside the fuel tank and vacuum, and returns it to in the fuel tank. The EVAP bypass solenoid valve opens to bypass the two way valve during the EVAP leak check.