Canister Purge Control Valve: Description and Operation

EVAP Canister Purge Valve (321)

The EVAP canister purge valve comprises a solenoid valve located in the line between the EVAP emission canister and the intake manifold. It is used to govern the amount of air/hydrocarbons from the emission canister that is passed to the engine for combustion. The purge valve is also used during the tank integrity diagnosis.

The purge valve is normally closed. It is supplied with current from the main relay.

ALLDATA Editor Note: A variety of data conflicts or variance exist in the manufacterer's presentation of the specifications for the component numbered 321 entitled EVAP Canister Purge Valve (321). An Important Note, Please Read First