Leak Detection Valve: Description and Operation

Canister Vent Solenoid

Typical Canister Vent (CV) Solenoid:

During the Enhanced EVAP System test monitor, the Canister Vent (CV) solenoid (Figure 99) seals the EVAP canister from atmospheric pressure. This allows the EVAP canister purge valve to obtain the target vacuum in the fuel tank during the monitor run.