ABS Light

I've completely stripped and rebuilt a 1998 MGF VVC including head overhaul and gasket clutch, brakes, electrics etc, etc. I did remove the ABS Module to clean. After rebuild it started first time and all is ok except the ABS Light. The pscan is not showing any fault codes and I've checked all sensors, reluctors, wiring with multimeter and all check out ok. At a bit of a loss now. Any help would be much appreciated.

Have you driven the car yet?
I have read that it can take a short drive to clear errors.

Comments about ABS light after an MOT, after beingused on a rolling road, taking a short drive to clear.