80q cruise control
Huw Powell
audi at humanspeakers.com
Fri Nov 16 10:14:02 PST 2007
> If Huw doesn't chime in, try his website: http://www.humanspeakers.com/audi/cruise.htm
Well, that saves me looking up the url!
> The cruise control on my 88 80q is no longer functioning, and I want you to
> do something about it.
>
> Actually, a little diagnostic advice would be helpful.
>
> The pneumatic components seem to be working correctly (air bladder, vacuum
> lines and vacuum switches Haven't checked the pump yet, but wanted to see if
> it was getting voltage first).
>
> The brake and clutch electrical switches checked out ok.
>
> My bentley is not with me, so I don't have that to assist me, and I have not
> dived into checking the column switch or the controller yet. In fact, I
> don't even know where the stupid controller is on this car. Any help here?
>
> I did some very basic diagnostics while driving by hooking up the vacuum
> pump wiring harness to my multimeter.
>
> the setup is as follows looking at the wiring harness
>
> 2
> 1 l l 3
>
>
> Wire 1 -- Blue / Green
> Wire 2 -- Red / Brown
> Wire 3 -- Red / Blue
>
> Hitting the cruise control produced the following:
>
> Leads 1/2 No voltage recorded.
>
> Leads 1/3 -- Momentary spike (up to 2+ volts,) then back to 0
>
> Leads 2/3 -- Momentary spike (up to 2+ volts,) then back to 0
>
> Any thoughts as to what it might be? Any idea on where the controller is so
> I can do a complete diagnostic on the system?
Controller is behind ashtray til 87, from 88 on (new body style) it's
above the glovebox, sort of.
--
Huw Powell
http://www.humanspeakers.com/audi
http://www.humanthoughts.org/
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