ABS controller- dangling 2 wire harness

[Phil@sievers.com (Phil Payne)]

In message <970308122221_-1673951507@emout07.mail.aol.com> Myke456@aol.com writes:

>> Interesting.  Are you sure it's black and black/blue, and not
>> black/green and black/blue?  The green trace on black is sometimes
>> hard to see ...

> definitely all black and black/blue

>> Anyway, it sounds like the connection for an accelerometer.  They're
>> standard on ur-quattros from the MB onwards, but I didn't realise they
>> were fitted to 5kcstqs.

> hmmm...interesting

>> Anyway, pins 11 and 16 on the ABS controller are connected during
>> normal driving and disconnected during heavy braking.  It's a simple
>> mercury switch that responds to heavy "G" in the direction of
>> travel.

> Do you know if closing or opening the circuit deactivates the ABS? When it
> deactivates during hard braking, does the "ABS off" light illuminate or stay
> off? My circuit is open.

I had a _good_ day today.  The squeal coming from my hydraulic pump was
completely cured by a new belt, the passenger door handle that was
sticking in the "open" position proved to be a lubrication issue, not
a broken return spring, and the "stumble" that I've complained about
here over the last few weeks turned out to be a defective HT lead to
#3 cylinder.  With karma like this, I elected to break the #1 rule and
tempt the Audi Gods:

         "Never dick around with something that's working!"

Anyway, I disconnected and demounted my accelerometer to measure it for
you.  It's Bosch #0 265 005 003 and Audi #443 907 388.  The mounting
studs are fore-and-aft, and the accelerometer is mounted with the arrow
pointing forwards.  At rest, and under acceleration, the circuit is
"made".  Under braking corresponding to around 1/10th G or more, the
circuit is "open".

--
 Phil Payne

 Phone: +44 385302803  Fax: +44 1536723021  CIS: 100012,1660