June 10, 2024
The engine control module (ECM) or powertrain control module (PCM) is the brain of a vehicle’s operating system.
It is a small computer that controls various functions of the engine, such as ignition timing, fuel injection, and emissions control. The ECM monitors sensors throughout the vehicle and adjusts these functions in real-time to optimize performance, reduce emissions, and ensure the engine operates efficiently. The PCM receives input from numerous sensors, such as the…