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Home >> Mazda >> 2008 >> B2300 Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Symptom Troubleshooting (Brakes) >> Anti-Lock Brake System (Abs) Diagnosis >> Principles of Operation >> Wheel Speed Sensor

Wheel Speed Sensor

NOTE:
  • Any time a wheel speed sensor is removed, thoroughly clean the mounting surfaces. Apply high-temperature grease to the front wheel speed sensors when installing.

The anti-lock brake system uses 3 variable-reluctance sensors to determine vehicle speed. The wheel speed sensors operate on a magnetic induction principle. As the teeth on the wheel speed sensor ring rotate past the stationary sensor, a signal proportional to the speed of the rotation is generated and sent to the ABS module.

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