Evaporative Emissions System: Description and Operation

Evaporative Emissions (EVAP) Control System Schematic:

PURPOSE
The basic Evaporative Emission (EVAP) control system used on this vehicle is the charcoal canister storage method. This method transfers fuel vapor from the fuel tank to an activated carbon storage canister. This retains the fuel vapors when the vehicle is not operating. When the engine is running, the fuel vapor is purged from the carbon element by intake air flow and consumed in the normal combustion process.