ok, we've probably nearly all had problems with the ABS system.
mine is like this (LHD 2wd cossie - the distribution block is together with the pump/accumulator/reservoir unit on LHD)
the system pumps up fine when you go to key position 1 ad both warning lights go off. i drive off normally, and the abs is working and will prevent lock up at a reasonable speed.
when i slow down to between 15 and 10 mph, there is a fast clicking sound coming from the pedal box / abs unit area, and the pedal goes hard. come to a stop and it is normal again, or go faster and it is normal.
anyone got any ideas?