System Description: EVAP: Notes

The evaporative emission (EVAP) controls minimize the amount of fuel vapor escaping into the atmosphere. Vapor from the fuel tank is temporarily stored in the EVAP canister until it can be purged from the canister into the engine and burned. The EVAP canister is purged by drawing fresh air through it and into a port on the intake manifold. The purging vacuum is controlled by the EVAP canister purge valve. Also attached to the EVAP canister are the EVAP canister vent shut valve and the fuel tank pressure (FTP) sensor.