[b3lha]

So far I've had good results doing this on my 94 SVX Version S40ii and my 96 Legacy. I've just discovered that it doesn't work on my 91 SVX Version L.

It connects OK and the ECU does respond to the commands I send. But the data it sends back does not conform to the protocol. The response is different every time I run the command . It looks random. I thought maybe my ECU had a faulty transmitter, so I tried it on another 91 Version L - and that one does exactly the same thing!

Maybe the early cars use a different protocol. Maybe it's just the 4WS cars. Maybe they are actually both faulty in the same way. Could be a bug in the early CPUs. At some point I'll investigate further.

For now I'm going to concentrate on figuring out the assembly code. I've already found a few interesting routines, but it's slow and time-consuming work. I'll post some updates on my website when I have enough information to make it worthwhile.

Phil.