Diagnostic Port Wiring

From: Larry L Athey (larryathey.nospam@larryathey.com)
Date: Wed May 26 2004 - 17:55:09 EDT


I'm new here, so I'm sure this message has probably been asked and
answered numerous times. Please forgive me if this is redundant.

Is there any chance at all that I could find out exactly what the
pin-out assignments are on the diagnostic port on a 99 Dakota? I've done
a lot of embedded programming and I've found that a lot of companies
simply use a 9600 baud 8N1 serial connection on diagnostic ports found
on everything from network routers all the way down to painfully simple
things like home appliances.

So, what I would like to do is find out if by chance the diagnostic port
on a 99 Dakota is just a serial connection to the onboard computer. If
so, I'd like to make a serial cable to connect a laptop computer to it
with a basic terminal program running so I can see the error codes
without having to take it to Autozone or a Dodge dealer.



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