When it comes to modern vehicles, the engine control module (ECM) plays a crucial role in ensuring that the engine runs smoothly and efficiently.
Also known as the powertrain control module (PCM) or engine control unit (ECU), the ECM is essentially the brain of the vehicle's engine management system. It continuously monitors and controls various engine functions to optimize performance, fuel efficiency, and emissions levels.
The ECM is typically located in the engine bay and is connected to various sensors throughout the vehicle. These sensors provide data on factors such as engine speed, throttle position, air intake, coolant temperature, and exhaust emissions. The ECM uses this data to adjust fuel injection, ignition timing, and other parameters to ensure that the engine operates efficiently and meets emissions standards.
One of the key functions of the ECM is to control the air-fuel mixture in the engine. By accurately adju...