Canister Vent Solenoid (OBD II vehicles only)
During the Evaporative Emission Running Loss System Test Monitor, Evaporative Emissions Repair Verification Drive Cycle and the Evaporative Emission System Leak Test) the canister vent solenoid is closed, to allow either a vacuum to be drawn on the fuel tank or to hold a specified pressure in the system. The canister vent solenoid is normally open.