Ford DCL protocol

Started by Jeroen September 27, 2006
does anyone know the protocol of Ford's DCL (data communications link) used 
on early '90s EEC-IVs? It's a two pin connection (it's not the normal flash 
self test flash code thing);  from patents I've found it's probably a RS485 
connection but I can find no info about the protocol used, other then a few 
scan tools that support it.