ABS Wheel Sensors
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Joined: Mar 2004
Posts: 2,703
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From: Bremen, GA.
RE: ABS Wheel Sensors
The Wheel Speed Sensor consists of a magnet surrounded by windings from a single strand of wire . The sensor sends a small AC signal to the ABM. This signal is generated by magnetic induction. The magnetic induction is created when a toothed sensor ring (exciter ring or tone wheel) passes the stationary magnetic WSS.
Thread Starter
Joined: Mar 2008
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RE: ABS Wheel Sensors
Thanks for the reply!
It is my understanding that the magnetic induction sensor such as you described is a passive device that is not very accurate until the wheel speed reaches a reasonable value (ie, 10-20 mph). This was adequate for early ABS systems , but when more sophisticated stability/tractioncontrol systems were needed, a very accurate (down to zero wheel speed) active type of magneto-resistive sensor was required. I was wondering whether any of the newer Dodge cars/trucks (such as my 2005 Ram 1500) had converted to these new wheel sensors?
It is my understanding that the magnetic induction sensor such as you described is a passive device that is not very accurate until the wheel speed reaches a reasonable value (ie, 10-20 mph). This was adequate for early ABS systems , but when more sophisticated stability/tractioncontrol systems were needed, a very accurate (down to zero wheel speed) active type of magneto-resistive sensor was required. I was wondering whether any of the newer Dodge cars/trucks (such as my 2005 Ram 1500) had converted to these new wheel sensors?