xantia abs ecu fault

hi i was just wandering if any one else has hed probs with abs light staying on.ive looked online and its supposed to be a common fault in xantias.ive replaced the faulty ecu xan1 ecu with a xan2 off a newer xantia,yet the light still stays on.does anyone have any ideas?suggestions?

Try this site for a few ideas http://www.bba-reman.com/xantia.htm
Good hunting. R