One of the most critical and reliable parts on the majority of vehicles is called a powertrain control module (PCM). It’s often referred to as the heart of the vehicle, but more precisely should be called the brain of the engine. Every active component of the powertrain relies on the PCM to tell it what […]
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Modern engines are amazingly complicated devices. They rely on split-second timing and on-the-fly adjustments to create an extremely efficient machine. To control all that, a special device is installed in the engine bay, known as an engine control module (ECM). It manages every component that directly impacts the motor, using an array of sensors and […]
Today’s cars are more complex by far under the hood than those from the turn of the 20th century, with hundreds of subsystems working in conjunction towards the goal of getting you from point A to point B quickly, safely and comfortably. The powertrain control module is a good example of this complexity, and also […]