Cruise control switch logic

[Huw Powell]

> I'm trying to get the cruise control working on the 5k again, and I'm
> not sure how one of the circuits is supposed to behave.
>
> There are four cruise switches in the stalk. As shown in the Bentley,
> they are (right to left) Set, Resume, On + Resume, and my mystery
> switch. The diagram suggests that this switch is closed when the slider
> is set to On or Resume, basically like the adjacent switch.
>
> The first three switches are connected to +12V and test fine.
>
> This leftmost switch is not connected to +12V but instead to the brake
> light switch. Its "output" then runs through the CC's clutch and brake
> switches in series, and then to the CC module.

"Coast"

Deactivates cruise control without turning it off, so the previous speed
setting is remembered.  In other words, it acts just like the brake and
clutch pedals.

You forgot "off", all the way to the right.  To operate, move slider to
"on"  Pressing the end switch sets a speed.  moving the slider to the
right deactivates it so you can "coast", this is a momentary switch.
Moving it to the left "resume"s the previously set speed.  If there is
no previous setting, "resume" does nothing.

and for some troubleshooting info, etc...

http://www.humanspeakers.com/audi/cruise.htm

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/