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A power-train control module, also known as PCM, is an electronic control unit used specifically on motor vehicles. The PCM often consists of a combination of the engine control unit and the transmission control unit. The PCM plays a role in over 100 factors in a vehicle. A range of error codes can pop up at any given time, indicating that there is a problem with a section of the car. When this happens, the Check Engine light on the dashboard will often come on. Because the PCM is so knowledgeable, it is commonly referred to as the “brain” of the vehicle.
The inputs that the PCM receives all come from sensors, which are located in various areas throughout the vehicle. The majority of these sensors are for vehicle maintenance and performance, and they often become faulty far more than the computers do.
You’ll be relieved at how much money purchasing your Lexus ECUs, ECMs, TCMs, and PCMs through Car Computer Exchange can save you instead of paying dealership prices.