Modern vehicles have all wheel sensors called wheel speed sensors. These sensors send wheel speed information to the ABS control module through a wire connection to the control module. If these sensors do not function correctly, braking system will operate erratically and could cause accident or injury if the brakes apply at the wrong time. Checking and replacing ABS break sensors is an easy job but must be done according to the service manual for your vehicle.
Instructions
Disconnecting a wheel speed sensor
- 1
Loosen the lock nut with an open end box end wrench. Turn the wrench counterclockwise until the lock nut is removed.
2Use a small flat tip screw driver to gentle pry up the clip on both sides of the sensor. The wire connector will then be loose enough to remove.
3Pull gently on the wire connector until it disengages from the speed sensor connection.
4Remove the wired connection by hand. Once removed, check the wire connection for corrosion or signs of heat damage. If either condition exists, use your wire stripper/cutter to remove the connector and replace it with a new one.
5Use your wire stripper/cutter to remove about a 1/8 of an inch of insulation when installing the new connector. Use a wire connector that matches the wire size to connect the wire to the new plug-in connector. Plug the new connector into the male fitting on the wheel hub.
