The Engine Control Module (ECM), also known as the Powertrain Control Module (PCM) or Engine Control Unit (ECU), is a crucial component in modern vehicles that helps to ensure optimal performance and efficiency.
The ECM is essentially the brains of the vehicle, as it monitors and controls various engine functions to ensure smooth operation. It reads data from sensors throughout the vehicle, such as the oxygen sensor, throttle position sensor, and mass air flow sensor, and uses this information to adjust the fuel mixture, ignition timing, and other …