STC1866 - ABS Sensor – Rear

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ABS Sensor - Rear, part of the four-wheel anti-lock braking system. The rear wheel speed sensor reads the passing teeth of the exciter (reluctor) ring as the wheel turns and feeds the resulting rotational-speed signal to the ABS control unit. The control unit compares all four wheels to detect impending lock-up and modulate brake pressure accordingly. A failed or contaminated sensor commonly triggers the ABS warning lamp and disables anti-lock function on that circuit. Show more