Leak Detection Valve: Description and Operation

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.

The canister vent solenoid:
^ is normally open.
^ seals the EVAP system for the inspection and maintenance (I/M 240) test and OBDII leak and pressure tests.
^ is mounted on the EVAP canister bracket assembly.
^ is repaired as a separate item.