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post #2 of (permalink) Old 27th October 2009
Technical Supremo

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I take it you car has no toothed reluctor rings but the wheel bearing contains a magnetic segmented ring. This sytem works on the same principle but the other way round if you get my drift. The newer system works by a series of magnets passing a passive coil with an iron core whereby the older system had a ferrous metal toothed ring pass a magnet surounded by a coil . Sorry I don't know the resistance but have you tried checking the resistance of another sensor on one of the other wheels for comparison. If it measures open circuit I would suspect it is faulty though. It also may be worth trying if you can get a signal from another sensor for comparison.
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