What the title says. I’ve been trying to watch YouTube videos to understand what a CAN bus system does and how it differs from a ECU or PCM and I’m not getting anywhere.
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ECU and PCM are control units. Small computers with a very specific job to do. Modern cars have a lot of those spread out.
A CAN bus is, as the name suggests, a bus system. A bus is a communication system. In this instance, the CAN bus does not control anything specific in the car, but is the “data highway” that connects all the control units and periphery so they can talk together.
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