Automatic Climate Conrol...Audi 100...1990

[Ed Kellock]

This issue sounded familiar initially but it wasn't until Tony's mention of
the resistor pack in the rain tray that I remembered. I had this same
problem on my long-gone 87 5kcstq (haven't typed that in a long time).
Anyway, I didn't troubleshoot it specifically, just replaced it, with a
used part I believe.
On Sep 21, 2012 4:51 AM, "Tony Hoffman" <auditony at gmail.com> wrote:

> Start by unplugging the connector going into the fan resistor pack in teh
> raintray area. Test for power there. The bentley will show you which wires
> you are looking to test, let us know what you find.
>
> Tony
>
> On Thu, Sep 20, 2012 at 10:56 PM, mboucher70 hotmail.com <
> mboucher70 at hotmail.com> wrote:
>
> > I removed the climate control unit from the car to bring it inside and
> > examine the PC board.
> >
> > Even after completely removing the control unit, the blower motor still
> > runs on high whenever the ignition is on.  That doesn’t seem like the
> > failure mode of a switch, and thus I’m wondering again if there’s a relay
> > involved.
> >
> > Does the fact that the blower motor continues to run on high even without
> > the control unit, point to it being a likely flaw not related to the
> > climate control unit?
> >
> > I’ve opened up the climate control unit and its quite immaculate and a
> > pretty solid unit.  So before I arrange for a replacement, just wanted to
> > eliminate any other possibilities that would make the blower motor run on
> > high with or without the control unit.
> >
> > From: Jay M
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