Maybe something like
http://dangerousprototypes.com/2010/04/22/bus-pirate-can-pirate/

Not entirely sure where you think the problem may lie though.

edit: you may need something more like an oscilloscope if you're not sure about connections.


Edited by Shonky (09/12/2012 21:37)
_________________________
Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)