Engine Evaporative Emission System

The engine evaporative emission system consists of the following:
- evaporative emission canister purge valve
- evaporative emissions canister

System control and operation are accomplished through separate basic functions in the system:
- fill control vent system
- fuel tank evaporative emission venting and storage system
- evaporative emission purge system
- pressure and vacuum relief (fuel tank filler cap and evaporative emission valve)