2000 Passport 4WD - ABS Sensor Location

Where is the ABS sensor located on my 2000 Passport 4WD.

Which one? The front wheel sensors are usually located behind the brake backing plate close to the CV joint. The rear is usually located on the top of the axle in the middle.

The light that is on my dash is lit ABS, lower middle of instrument panel. So I am not sure which one.

You'll need to have someone pull the ABS codes to see what's wrong. Could be a sensor, could be something else. No way to where to start looking without pulling the codes.