E34 540: No communication with AGS

[schwartz]

I am the proud owner of a '94 540 (E34) with "I think" all possible options installed from the factory.

Last year the gearbox broke down, and I had the local mechanic change it to a another used gearbox.. then the trouble started.

First indication was the passenger-side mirror - it has the option to turn down (to watch the backtire) whenever the car is put in reverse.. After the gearbox-change - it points up instead!..

The car also started having trouble getting in motion from standing still in "D".. and now its so bad I have to put the gaspedal all the way to the floor to get i moving.
As soon as the gearbox "catches" first gear, everything works just fine.. Also when the gearbox is in "N" it reverses slighty.
I was pretty sure the new gearbox was broken - so we have changed it to another one.. still same problem.
I have also switched the AGS-box.. still same problem.

When I install an AGS from a 740 the car goes into transprogram (ofcourse), but it runs just fine in third gear, and no reverse in N..
So by now Im pretty sure its something going on in the controlmodule (AGS) or some other external signal http://www.e38.org/electran1.pdf (page 10)

Anyway - I needed to get inside the diagnotics of it to see what is going on.
So I bought this kit: http://www.uobd2.net/wholesale/bmw-icom-a2-b-c-with-wifi.html

It works fine (I think) - I am able to start Reingold and get in contact with the car.. But Im only able to communicate with two modules -DME and IHK(climate control).. and nothing else.. And I know there is a lot more of the modules I should be able to communicate with.
So maybe the fault is somewhere on the communication-bus - according to http://www.e38.org/e34/e34_94_etm.pdf ,the DME and AGS should be right beside eachother on the com-bus.. (And I have tried with several AGS-modules)

I could really need some good pointers on where to go from here - what am I missing ?