A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

ABS sensor testing.

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Old May 20, 2009 | 08:12 PM
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Default ABS sensor testing.

Hello every one. I was wondering if some audi gurus out there can tell me how to test me ABS sensor? I remember reading a write up in the tech section on how to test an individual sensor with a multimeter, but I can't find it anymore. What values should the multimeter read if the sensor is good? I set the multimeter to measure resistance and the meter showed infinite resistance, meaning open circuit. I am assuming open circuit means bad sensor. Let me know what you guys think. Thanks.
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Old May 20, 2009 | 08:14 PM
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Pardon the spelling error in the second sentence. That "me" should be "my."
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Old May 20, 2009 | 08:43 PM
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Using a VAG-COM, you can go up to speeds of 20 MPH and see if all four report synchronously. If not, replace the one that fails.
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Old May 21, 2009 | 10:11 AM
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I can't really drive the car. I took apart the passenger side control arms yesterday. The car is currently help up by two jack stands. I guess I will wait till it is back together and in the mean time order a vag-com cable. I was hoping there was another way to test it.
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