Nubira SE Sedan L4-2.0L DOHC D-TEC MFI (2001)
Wheel Speed Sensor: Description and Operation
FRONT WHEEL SPEED SENSORS
The front wheel speed sensors are of a variable reluctance type. Each sensor is attached to the steering knuckle, close to a toothed ring. The result, as
teeth pass by the sensor, is an AC voltage with a frequency proportional to the speed of the wheel. The magnitude of the voltage and frequency
increase with increasing speed. The sensor is not repairable, nor is the air gap adjustable.
FRONT WHEEL SPEED SENSOR RINGS
The toothed ring mentioned above is pressed onto the wheel-side (outer) constant velocity joint. Each ring contains 47 equally spaced teeth. Exercise
care during service procedures to avoid prying or contacting this ring. Excessive contact may cause damage to one or more teeth. If the ring is
damaged, the wheel-side constant velocity joint must be replaced.
REAR WHEEL SPEED SENSORS AND RINGS
The rear wheel speed sensors operate in the same manner as the front wheel speed sensors. They incorporate a length of flexible harness with the
connector attached to the end of the harness. The rear wheel speed rings are incorporated into the hub assemblies and cannot be replaced separately,
but require replacement of the rear hub/bearing assembly.
