tps wiring/voltage check/descrepancy '91 200 20V tq

[benswann at comcast.net]

No connector unplugged - as per Bentley.

Ben
> Did you have the connector plugged in when checking the voltage?
> Commonly there is a series resistor on the 5v line to protect the ECU.
> I'll almost bet that you're supposed to unplug the TPS when checking
> this voltage.
>
>
> On Wednesday, September 10, 2003, at 02:41  PM, benswann at comcast.net
> wrote:
>
> > Gary,
> >
> > Thanks a lot for checking.  It seems like there is quite some
> > variation in the
> > readings.  Anyone else checked theirs.  Two cars I've checked have
> > voltage
> > around 3.5V.
> >
> > Bently says voltage between pins 1 and 3 on TPS connector should be
> > 5V.  If not
> > then bad wiring or ECU.  Assuming I have correctly checked my wiring,
> > then what
> > causes this variation.
> >
> > Note:  Wiring diagram indictes a straight thru connection between TPS
> > and ECU
> > on Pin 3m, so really not much else there to test.
> >
> > Ben
> >
> > [From: "motogo1" <motogo1 at cox.net>
> > To: "Audi 200" <200q20v at audifans.com>
> > Subject: Re: Throttle position sensor/circuitry checking w/resp. to
> > poor fuel
> > econ.
> > Date: Tue, 9 Sep 2003 23:19:47 -0700
> >
> > Well, on my TPS, voltage between pins 1 and 2 is 5V..in spec per
> > Bentley.
> > Between pins 1 and 3, 1.6 volts. Not even close to Bentley spec. My
> > car is
> > chipped with IA III+ and runs strong, with no problems. I'm going to
> > have to
> > check the mileage, to see what I'm getting.
> >
> > Gary Martin
> > 94 UrS4
> > 91 200 TQA]
>