Front wheel speed sensor.
This is what the sensor looks like in the hub assembly (knuckle): 1 - adjusting ring of the speed sensor; 2 – an internal ring of the bearing of a forward nave; 3 - front wheel rotation speed sensor; 4 - wheel hub; 5 - steering knuckle
Hub bearing with sensor: 1 - magnetic washer of the bearing; 2 – speed sensor; 3 - hub bearing; 4 - adjusting ring of the speed sensor
Removing
Jack up the car and place it on secure stands, or place it on a two-post lift, apply the parking brake and turn off the ignition.
Remove front wheel.
(Raise the vehicle to a height suitable for work).
Figure 21-2 - Removing the front wheel speed sensor: 1 - bracket for fastening the speed sensor wiring harness; 2 - fender liner retainer; 3 - front wheel arch liner; 4 - front wheel speed sensor; 5 - bracket for fastening the speed sensor wiring harness on the front suspension strut; 6 - steering knuckle
Remove retainer 2, Figure 21-2, front wheel arch liner in the area of the speed sensor wiring harness (flat screwdriver).
Note. For convenience, you can remove the front fender liner (see here).
Remove the speed sensor wiring harness from the grooves of the bracket 5 of the front suspension strut and from the holder 1 on the mudguard of the engine compartment.
Remove the insulating foam 1, Figure 21-3, from the knuckle speed sensor mounting socket (not necessary).
Figure 21-3 - Removing the front wheel speed sensor: 1 - insulating foam; 2 - front wheel speed sensor; 3 - latch
Remove the 2nd speed sensor from the mounting hole on the steering knuckle by pressing the tab of the 3rd sensor lock with a screwdriver (flat screwdriver).
Disconnect the speed sensor wiring harness connector from the front speed sensor wiring harness and remove the sensor.
Attention. The insulating foam of the wheel speed sensor must be replaced.
Installation
Install the insulating foam into the speed sensor mounting groove on the steering knuckle.
Connect the speed sensor wiring harness connector to the wiring harness.
Install the speed sensor in the mounting hole on the steering knuckle until the latch is released.
Install the speed sensor harness into the grooves of the front suspension strut bracket and into the holder on the engine compartment mudguard.
Secure the front wheel arch liner with the retainer.
Install the front wheel.