Toyota Repair: 1995 4Runner AntiBrake Light, gear teeth, abs light

Question
I have a 1995 TR4 4x4 SR5 with the ABS light that doesn't turn off.  It started off only coming on once in a while but is always on now.  I put in a new speed sensor on the rear end, installed new pads/shoes, bled all the rear lines, reset the power by disconnecting battery, checked for a short in the rear speed sensor wiring, checked the ABS fuse to be okay, but the ABS light is still on and the code still shows 33.  Any ideas???
Thanks,
Lon

Answer
You'll need to remove the sensor again and inspect the differential ring gear, it's very possible that one of the ring gear teeth is chipped, the sensor uses the gear teeth as an input signal, if any of the teeth even have  small chip it will cause this problem.