![]() The ECU also controls our transmission, telling the car when to switch gears while driving. This allows the car to know when you step on the accelerator, and how much gas it needs to feed the engine based on the amount of throttle you’re giving it.īefore switching to this system, cars used a mechanical throttle, where the accelerator was connected to the engine via a cable that regulated the injection of fuel. One function of the engine control module is determining what position the gas pedal is at at idle. It has a very definite purpose in your automobile and acts as the brain for your car, in fact, some people call it the brain box.ĮCU’s are generally used to monitor and control various engine functions. ![]() ![]() An Engine Control Module or Electronic Control Module (ECU) is a term for any unit inside of a larger mechanical/electrical system. ![]()
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