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 engine speed, temperature, and airflow, which the ECM uses to make real-time adjustments to the engine's performance.
One of the primary functions of the ECM is to control fuel injection. By monitoring the air-fuel ratio and engine load, the ECM can determine the correct amount of fuel to inject into the engine cylinders. This helps to optimize fuel efficiency, reduce emissions, and improve overall engine performance.
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