E46Fanatics - View Single Post - How to test ABS sensors?
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Old 06-25-2007, 09:26 PM   #6
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Join Date: Aug 2006
Location: Arizona
Posts: 83
My Ride: 2000 323i E46
To the OP. Jack and remove the wheels. Disconnect the wheel speed sensor(s) from the harness in the wheel well. You'll need a digital volt meter (DVM). Connect the meter leads to the wheel speed sensor - polarity doesn't matter. Select the milivolt range (mV). Spin the hub and observe the meter. You should read between 1 and 5 mV when you spin the hub. No output = a defective and/or dirty sensor. Cheap and effective. Good luck.
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