Component Functional Description - Ejector Tee
Functional Operation: The Ejector Tee is used to create vacuum to draw fuel vapors from the charcoal canister when the engine is in boost. The fuel vapors are drawn into the intake manifold through the fresh air side of the system. To create vacuum the nozzle utilizes the venturi effect. The boost air enters the nozzle through the boost air fitting and passes through the nozzle across the end of the purge tube fitting creating a pressure drop. This creates vacuum in the purge tube leading to the Purge Solenoid. The Ejector Tee is mounted on the air cleaner box or integrated into the emissions control vacuum harness on early build vehicles.
Diagnostic Overview: The Ejector Tee functionality is diagnosed as part of the Purge Flow Monitor diagnostic. If the nozzle is damaged or blocked it will not allow vacuum to be created and will fail the boost side Purge Flow diagnostic and set DTC P1CEA.