The engine control module (ECM), also known as the powertrain control module (PCM) or engine control unit (ECU), is a vital component in modern vehicles that is responsible for controlling and coordinating various aspects of the engine’s operation.
From fuel injection to ignition timing to emissions control, the ECM plays a crucial role in ensuring that the engine operates efficiently and effectively. The ECM receives input from various sensors located throughout the vehicle, such as the oxygen sensor, throttle position sensor, and crankshaft position sensor. These sensors provide data on factors such as …