subaru Workshop Repair Guides

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Wheel Speed Sensor|Service and Repair > < Wheel Speed Sensor|ABS|Page 4546
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Wheel Speed Sensor: Description and Operation
ABS [5.3 Type]

ABS SENSOR 

The ABS sensor detects wheel speed and consists of a permanent magnet, coil, tone wheel, etc. The magnetic flux produced by the permanent
magnet varies with the tone wheel (which rotates together with the wheel) and the sensor emits an alternating voltage corresponding with the wheel
speed by electromagnetic induction.

Wheel Speed Sensor|Service and Repair > < Wheel Speed Sensor|ABS|Page 4546