Glen,
OBD II data may be accessed using the either the ISO9141-2 or SAE-J1850 serial coms. protocols, the latter being the more common in the states.
Steve
__
Steve Evans Radstone Technology Plc.
Principal Design Engineer Water Lane,
Towcester,
Tel: +44 (0) 1327 359444 Northants,
Fax: +44 (0) 1327 358113 NN12 6JN
Email: sevans@radstone.co.uk ENGLAND