03 with abs problem
 

I have an 03 Sport Trac. The last 5-10 mph of me braking, the abs engages until I completely stop. I read on here and see that it is recommended that it is a tone ring issue. I have had this vehicle on the Snap ON Modis, and I watched the speed sensors during braking. They stay uniform as I am accelerating and braking, when I get to the point where the ABS engages the Modis goes blank and stops communicating with the vehicle. It still may be a tone ring issue, but all help is appreciated.

Thanks,

Ed