OK, have same problems of intermittent, trx, etc. Couldn't see how I could manage to take out old unit send to Viktor and then replace as the car would be out of commission for X days.

Anyhoo. Bought a new ABS control unit and am chicken to replace it as while my symptoms all point to the ABS unit, what about the hydrolic modulator? If this is bad, does the trax light come on?

Any info on how this is all connected much appreciated. Will go and check my wheel sensor connections though.