Thread: When the ignition is off

Originally Posted by Judo

I don't know if it would really be possible to draw a complete circuit diagram that's useful. With everything being controlled through ECU's, a physical diagram would not give the full picture - you need to understand the logic and intelligence of the ECU's as well.

For example you could look at a physical diagram of a computer motherboard, but that doesn't tell you anything about what is live when as controlled by software instructions via the CPU.

That's why there is separate diagrams for particular functions. In someways this make is more complicated, but in other ways it makes it much simpler.

Anyway, that probably doesn't help you much does it.

Yes , you`re right and i understand the reasoning .

I guess the best way to describe what i mean for a main circuit diagram is ,

When using Google maps , you can enter an address which gives a graphic of a limited area of local streets ECT .

Voom out and it will give the suburb and surrounding suburbs , further vooming gives state ECT .

You can have as big or small over view as you require .

This only takes seconds as you know and is easily related .

The more you learn of a system the less overall you need and with RAVE if working on the system all the time it would be an almost perfect thing but to get to that stage more hours than i would want to put in are required .

For laymen which most will be an old type overview would be helpful and when i think about it it may be there just not as the graphic that i think i need to see .

Originally Posted by Judo

Excellent, so when I come across an electrical problem, I know who to ask now.

With pleasure if i know the answer .

Could be a while till i get to the other 200 odd pages though .

I haven`t investigated at all but wondered if the easier reading circuit diagrams are a BMW thing .