Majority of vehicles have a magnetic pick-up right behind the brake rotor. It picks up this signal from a metal disc with perforation. It has to know how fast or slow it's spinning and sending that data back to the ABS control module. It could also use the disc brake rotor too picking the signal from the top edge (I'm just guessing on that set up although possible). It has two wires coming out from it. Some cars have a brake pad wear sensor that has two wires coming out of the brake pads, so don't confuse this as an ABS pick up. It could also be called a wheel speed sensor.
151 views
Usually answered in minutes!
×