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Home >> Jeep >> 2009 >> Compass 2WD L4-2.4L >> Repair and Diagnosis >> Sensors and Switches >> Sensors and Switches - Brakes and Traction Control >> Wheel Speed Sensor >> Description and Operation >> Wheel Speed Sensor - Description >> Front

Front






DESCRIPTION

The antilock brake system uses two-wire wheel speed sensors, known as active wheel speed sensors. The sensors use an electronic principle known as magneto-resistive to help increase performance and durability. The sensors convert wheel speed into a small digital signal. A Wheel Speed Sensor (WSS) is used at each wheel. A magnetic pole encoder serves as the trigger mechanism for each sensor. At each wheel of the vehicle there is one wheel speed sensor and one encoder.





A front wheel speed sensor (3) is attached to a mounting boss on each front knuckle (4). The encoder is an integral part of the hub and bearing.

WSS air gaps are not adjustable.