ABS sensor

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Chicago,IL
#1
Any ideas how to diagnose which ABS sensor went bad? My abs light is on... I really would like to avoid spending $200 on a obd1 code reader.. The sensor has 3 pins, Its a magnetic sensor I think, Im gonna measure the different resistance between the pins for all 4 abs sensors and see which one is the one that sticks out... am I even on the right track here? ;>

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Best Regards
Tom
 
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Location
Reading,PA
#3
Yes, that is the procedure that GM recommends to ID a bad sensor. I have done this on a GM but not on a BMW, but it's got to be almost the same. The three wires are almost guranteed to be + voltage supply (could be 5 or 12 volts), ground and output pulse. Just make sure that you disconnected the sensors from the computer before doing the test.
 


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