EVAP Canister Purge Check Valve - Dual Path: Notes

The EVAP canister purge check valve dual path is used to allow purge flow during boost conditions. Fuel vapors flow through the EVAP canister purge check valve to the intake air system upstream of the turbocharger before entering the intake manifold. When the engine is OFF, or at atmospheric pressure, the EVAP canister purge check valve is in an indeterminate state.