Front Wheel Speed Sensors

The front wheel speed sensors consist of a variable reluctance sensor. The sensor and toothed ring are part of the sealed hub and bearing assembly. This allows for improved environmental protection and easier assembly. As teeth pass by the sensor, an AC voltage with a frequency proportional to the speed of the wheel is generated. The sensor is not repairable, nor is the air gap adjustable, the sensor and toothed ring cannot be serviced separately from the hub and bearing assembly. If a front wheel speed sensor fails, the entire integral bearing/sensor assembly must be replaced.