This caught my eye...a guy in Florida selling his 2000 Ironman on ebay wrote this in his description about how he FIXED HIS ABS UNIT:
IM RELISTING MAINLY TO INFORM VEHICROSS OWNERS THAT HAVE AN ABS LIGHT ON HOW I FIXED MINE FOR FREE.GO TO THE ABS UNIT LEFT CORNER UNDER THE HOOD. REMOVE 4 SCREWS WITH A TORX TOOL. SEPERATE THE BLACK ABS MODULE FROM THE METAL PUMP. ONE SCREW IS HARD TO GET TO SO LEAVE IT AND GENTLY SEPERATE THE MODULE AWAY FROM THE METAL HOUSING. SPRAY IN THROTTLE BODY CLEANER IN ALL THE CHAMBERS YOU WILL SEE USING THE NARROW RED TUBE SUPPLIED.SPRAY IN WELL.DONT GET IT ON THE OUTER PAINT.LET THE UNIT DRY FOR A HOUR OR SO AND REPLACE THE SCREWS. ABS LIGHT WILL GO OFF. USE THE BRAKES RIGHT AWAY ON A GRASSY OR SANDY SURFACE TO ACTIVATE PUMP. IT WORKED FOR ME HOPE IT WORKS FOR YOU.
http://cgi.ebay.com/ebaymotors/ws/eB...#ht_500wt_1182
Sounds easy enough to try.....who's goin' to give it a try?