Deceleration Control System
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Mazda Tribute, 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, and 2003 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Fuel injected engines include a system to reduce emissions and prevent overheating of the Three Way Catalytic (TWC) converter during deceleration, closed throttle and high RPM conditions. At engine speeds more than 2400 RPM, the PCM shuts off fuel injection whenever the TP sensor indicates a closed throttle valve position.