Description & Operation: Description

• Air Flow Sensor (AFS) is measure the mass of intake air entering the engine, and send the signal to Engine Control Module (ECM).
• A large amount of intake air represents acceleration or high load conditions while a small amount of intake air represents deceleration or idle.
• The ECM uses this information to control the Exhaust Gas Recirculation (EGR) valve and correct the fuel amount.

Courtesy of KIA MOTORS AMERICA, INC.