anti lock light on on 1997 Isuzu Hombre

anti lock brake light is on all the time. how can i troubleshoot the system to determine what caused it to illuminate.

2 answers 1 comment
Here is some help on that light: http://repairpal.com/abs-warning-light
I just drive mine and no problems.
Just be careful you get any ice/snow on the roads...mines on too