Do a diagnostics and see how many times your abs light flashes (look in manual) and than it should pinpoint where the problem is. When my ABS light went on I checked it and it told me that one of my rear speed sensors were at fault. So I replaced the speed sensor, resetted the code and the light went away.
I have a 98 camry though and I'm not sure you can go about the same way as me but if you can than you might want to check it.
I have a 98 camry though and I'm not sure you can go about the same way as me but if you can than you might want to check it.