Please explain in very simple terms ...... While I understand, in very simplistic terms, the muliplex idea, the testicle technical amongst you are talking about CAN of the can-bus .... what's it mean?
OK, I`ll try to confuse everybody further. For those that know this is not entirely accurate, but hopefully its brief laymans view of what we are all talking about ?
In the good old days, to connect electrical items in a car together, we used a simple switch, a bulb / motor / whatever and a battery source for the. These were all connected together by simple wires, usually a switched power feed and an earth return, and we all knew how to fault find and fix things.
Things progressed, and effectively went computerised for want of a better explanation, and it meant that larger numbers of items could be connected together and controlled, but instead of thousands of wires connecting them, you could control everything by sending a data signal down a couple of wires to an interface at the other end, a bit like connecting a network of computers together. Depending on what switch you pressed, one of the other items would receive a data signal and then react accordingly. This is basically the theory behind the Multiplex systems in the car. No more simple wires carrying a 12 Volt on/off signal, it would instead be a few wires carrying thousands of data signals.
The wires that carry these multiple signals are often called Data Bus lines, or simply "Bus" for short. Now, all computers speak a language and have a form of operating system, you are all familiar with the terms Windows, XP, Basic etc etc, in a vehicle is often called CAN or CAN Protocol, and I think you should now be able to see where the term CAN-BUS comes from ?
The CAN protocol and language itself is a closely gaurded secret amongst the Manufacturers, and what we are all trying to do is effectively learn the language without the aid of any books and unlock its many secrets - very similar to the first people who starting hacking the operating systems of computers in order to allow some of the many features we now have to have evolved.
" Hackers of the Omega World - Have Now United !! "
Did that help?
:-?