First of all,
I don't think any of us appreciate being called "thickheaded" and there are other ways to get your point across that don't require insulting others on the forum.
I apologize if you were offended by my attempts to explain how the AWD system and the Traction Control System work - your posts made it seem like you didn't have a full understanding - however, I think it benefits everyone to talk about how the system works b/c there are often questions like the one that started this thread which has gone so horribly awry.
If the "AWD 70 series cars did not come equipped with TRACS from the factory" then why did my 1998 V70 AWD come equipped with TRACS from the factory in Belgium? So did every other 1998 V70 AWD that I have ever seen.
Once again, I will refer to my quote from VADIS in an earlier post (which is the software that Volvo created for Dealers and Independent mechanics to use to look up parts, repair procedures, and general and specific information about the design and function of their cars) which states that in the 70 series AWD cars that the front wheels are used in conjunction with TRACS and the rear wheels utilize the rear differential.
I don't understand why you keep arguing that the AWD cars weren't meant to have a traction control system.
What is it that you think is overlapping between the TRACS/STC and the mechanical AWD system? Please explain your thinking and I'll try to respond later.