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Thread: ABS sender ohm readings

  1. 12th October 2019, 12:07 PM #1
    James NZ
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    ABS sender ohm readings

    Hi guys,

    My son's '95 D1 V8 has the ABS light on. Normally caused by loose front wheel bearings which happens every 6 months, which we check, retighten, tap the sender down and job done. This time it's not working. We did the flashing light code read which indicated the front right sensor. So I disconnected the plug and used the ohm meter. I got an initial reading then nothing. So curiosity got the the better off me and tried the front left and a rear sensor. Got the same result. On the rear sensor I got a reading off 960ohm then nothing after that.

    So the question is why would I get an initial reading and then zilch when repeating the test? Any ideas please?

    Incidentally, as I wasn't sure when I last replaced the battery in the multi meter I bought and installed a new one just in case.
    I've also done a search and got plenty of D2 results but am unsure if they apply to the D1?

    Cheers, James NZ
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  2. 12th October 2019, 03:33 PM #2
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    goingbush
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    The hall sensor is not a resistor, its a semiconductor, don't expect a result from an ohm meter, Perhaps the meter is providing some EMF to the sensor which it returns as a reading like you might see from a capacitor,

    you need to pass some metal back and forth over the sensor to get an on - off -on -off result which you might see with a voltmeter / ohm meter .
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  3. 12th October 2019, 06:01 PM #3
    James NZ
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    Quote Originally Posted by goingbush View Post
    The hall sensor is not a resistor, its a semiconductor, don't expect a result from an ohm meter, Perhaps the meter is providing some EMF to the sensor which it returns as a reading like you might see from a capacitor,

    you need to pass some metal back and forth over the sensor to get an on - off -on -off result which you might see with a voltmeter / ohm meter .
    Ah, I didn't know that, Thanks for your reply, we'll have another go tomorrow. Cheers
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  4. 12th October 2019, 06:17 PM #4
    PhilipA
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    or you can jack up and rotete the wheel.

    Regards PhilipA
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