Ford PCV System Diagram - Crankcase Ventilation Air Flow Schematic (AA0471-D)

This document is a labeled schematic diagram of a Positive Crankcase Ventilation (PCV) system, uploaded to a 2000 Ford Crown Victoria gallery. The diagram illustrates the flow of air through the engine's crankcase ventilation circuit. Fresh air enters from a remote air cleaner or air outlet tube through a closure fresh air hose into the valve cover. Arrows labeled 'AIR PATH' show the air traveling down into the engine crankcase, circulating through it, and exiting through the PCV valve mounted at the opposite end of the valve cover. From the PCV valve, vapors are drawn into the intake manifold (labeled 'INT. MAN.') beneath the throttle body. A separate hose at the PCV valve area routes to the EVAP canister purge valve or vapor management valve. The diagram is captioned 'PCV SYSTEM' and carries the illustration reference code AA0471-D. A reader can learn the overall airflow direction of the PCV system, the relative locations of key components (air cleaner connection, fresh air hose, valve cover, crankcase, PCV valve, intake manifold, throttle body), and how the PCV system ties into the evaporative emissions system. The document itself does not state a specific year, model, or engine application.