Knock sensor light on '89 90 quattro?

[Jim Green]

--- Huw Powell <audi at mediaone.net> wrote:
>
> > While fumbling through the Bently trying to
> intigrate
> > the ISV to the EFI, I notice that the '88 90q had
> a
> > knock sensor light connected to terminal 3, I
> think,
> > on the ignition control unit.  I'd love to have
> one of
> > these on my car so I can better keep an eye on
> things.
> >  I'm pretty good at reading the diagrams, but am a
> > little confused if it will be possible to hook up.
> > Anyone done this on an '89?
>
> Very interesting.  (p. 25-20-8 in the B. for those
> who wish to follow
> along at home...)
>
> that light appears to be attached, as you say, to
> terminal 3 of the
> ignition module, which is also attached to:
>
> 1. terminal 13 of the fule module
> 2. somewhere far away, the Auto Check Control Unit
> (to be expected)
> 3. on "some" 88's, terminal 10 of connector "10a"
> 4. on "some" 89's, terminal 1 of connector "2f" (is
> this under the
> drivers side knee panel?)
> 5. the real juicy one, terminal "49L" = "ILa" on the
> fuel pump relay!
> this appears to be unused in the fpr itself, and
> might make an easy
> place to experimentally tap into the signal.
> Especially considering how
> it looks in the Bentley, it looks like this *might*
> be one of the
> connections to the fuse socket on top of the fpr?
>
> --
> Huw Powell

Nice!  I sounds like there is definatly a way to hook
it up so I'll start probing and see if I can get it
working.  I'll let you know what I find out.
Thanks,

=====
Jim Green
'89 90tq EFI
http://www.geocities.com/jeg1976/car_home.html

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