A VERY brief video on how the CAN data bus works.
It is basically 2 wires connected between every module in the car and a gateway that divides the ENGINE CAN, CHASSIS CAN, INTERIOR CAN and AUDIO CAN and allows transfer of data . Most techs are looking for the can data bus, it is not a thing in a sense, it is a function of all modules.
How the battery connects power and ground to all modules is how the CAN DATA BUS transfers info to all modules.
If you need help diagnosing your car or wiring info or work info please check out
WWW.CARTECHCONNECT.COM
I hope this video helps and if you would like a more detailed one please leave me a comment below
I will gladly try and do a video of what you guys want to know more about
thanks!