Arthur,
Thanks for quick reply. I'm starting to see the trees through the forest.

Code reference doc is
http://www.peachparts.com/shopforum/tech-help/107630-e320-16-pin-dtc-charts-inc-pin-8-pin-14-a-post742563.html#post742563
by cdanschwartz dated 11-11-2004

Have a good weekend.
Bob