so whos going to the van nuys meet tonight
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Anyone got recommendations for a place that can service bilstein struts? Preferably in the inland empire area but whatever worksLast edited by ky0u; 11-14-2015, 02:32 PM.
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Originally posted by E30 331is View PostAnyone have experience with diagnosing abs issues?
Light turns on at ignition, then turns off. Light turns on after driving 15ft and stays on. Tested resistance and read around 1k on all 4 corners.
Im stuck. Help!
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Originally posted by Chilezen View PostNext step is to test voltage. Is the sensor receiving power, and is the computer reading it?
Umm, I didn't think they receive power. Its similar to temp sensors and such, resistance changes and that is what is read by the module. I may be wrong, I haven't found anything about voltage.
If there were issues with the module/relays or other electronics the light would stay on is what i read.
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Originally posted by JeLani View PostMy light stays on too, so you dont have to replace the whole module just the sensor?
Sent from my iPhone using Tapatalk
What i have read.
Originally Posted by jlevie
Troubleshooting the ABS system isn't very difficult. It is a standalone system
that only gets input data from the brake light switch, wheel sensors, and
system power. The parts of the system are the ABS module located next to the
steering column, the ABS relay mounted above the ABS module, the ABS unit in
the left front of the engine bay, and a speed sensor at each wheel.
If the ABS light comes on with ignition, but doesn't go out when the engine
starts, a wiring problem, bad module, or bad ABS relay are the likely
candidates. A failed or weak alternator will also cause this because the
system voltage won't rise enough. There is a fusible link inside the ABS relay
that can be blown. The relay can be repaired, or better yet, replaced. The
relays in the ABS unit can be replaced.
If the ABS light comes on when you turn on the ignition, goes out when the
engine starts, and then comes back on before the car is moving the cause could
be a bad module, a bad ABS unit, or a wiring fault.
If the light goes out after engine start and only comes on when the car is
moving, there's a problem with one (or more) of the sensors. The simple test
to find out which sensor(s) is the cause is to disconnect all but one of the
sensors and drive the car. If the light comes on, that sensor is sending a
speed signal to the ABS and is good. Repeat with each other sensor to find the one(s) that don't cause the light to come on. Since the ABS module has no
speed input besides the wheel sensors, if only a bad sensor is connected the
module can't tell the car is moving and thus doesn't fault on missing speed
signals from the other wheels. Once a bad speed sensor is found, if a new
sensor still doesn't work, there could be a wiring fault in that circuit or a
bad input channel in the ABS unit.
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