Will,
Try shorting the brake sensor plugs on the car end, one at a time. If the
light goes out when you do so, the sensor at that wheel has an intermittent
connection. If the light does not go out or does so intermittently, you
have a loose connection in the instrument cluster (IC).
I have the former, and for me it was easier and more satisfying to just
remove the brake lining bulb altogether. The alternative is to hunt for a
cracked solder join in one of the IC boards.
alex f
"Will Hartje"
<WHartje@Myex To: <bmw@domain.elided>
cel.com> cc:
Sent by: Subject: Brake sensor testing
owner-bmw@dig
est.net
11/12/01
10:02 AM
My 1990 E30 325i has the brake sensor light on permanently. The pads are
good and I have tested the continuity of the sensors themselves and they
are
good also.
How should I troubleshoot the rest of the circuitry? What sort of voltage
levels should I be looking for, and does this system have any known failure
points that I should check for?
Any help would be appreciated
Regards,
Will Hartje
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