Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Sensors and Switches > Sensors and Switches - Brakes and Traction Control > Wheel Speed Sensor > Component Information > Description and Operation > Toothed Ring > Page 1462
Wheel Speed Sensor: Description and Operation
Each ABS sensor measures the speed of the road wheel by detecting the rate of passage of the teeth on the sensor wheel.
In the case of the rear wheels, the value recorded is an average since only one sensor and sensor wheel is installed.
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