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 plays a crucial role in the overall performance and operation of the engine.
This complex computer system acts as the brain of the vehicle, controlling various functions such as fuel injection, ignition timing, emissions control, and transmission shifting. The ECM gathers data from various sensors located throughout the vehicle, such as the oxygen sensor, throttle position sensor, and mass airflow sensor. It analyzes this information and makes real-time …
