Wheel speed sensor, rear (298RL, RR)
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Wheel speed sensor, rear (298RL, RR)
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To send wheel speed to the TC/ABS or ESP unit.
Two Hall sensors which measure wheel speed using a 48-pole magnetic disc, which provides 48 pulses per rotation.
The Hall sensor sends a square pulse with a 50% pulse-rate.
The control module uses the frequency to calculate wheel speed; by measuring variation in current consumption, the frequency can be measured. The frequency increases with a corresponding increased wheel speed from 0 to 2000 Hz.
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Connection (not for control module)
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Pin no.
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Type of signal
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Description
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1
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Power supply
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From TCS/ESP control module
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2
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Signal
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Approximately +0.85 and + 1.85 V with the sensor connected
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Overview
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298 RL
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298 RR
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