Wiper washer not working - where is relay

[Huw Powell]

> I tested the pump with an external voltage source and it works fine.  I
> hooked a test light up to the pump connector and got nothing. I took the
> cover off relay 9 and tested its operation. Relay 9 is labeled on the box
> as intermittent wiper. That seems to be its only function since there is
> only one set of contacts inside.

Oops, you're right.  The washer pump is wired directly to a switch contact.

Here, by the way, is the *internal* schematic of the underhood fuse box:

http://www.humanspeakers.com/cgi-bin/audi_img.pl?image=fusebox.gif

The connections in question are at B53C and C53C.  This part of the 
circuit also trigger the wiper relay and the headlight washer relay.

Sounds like your switch is not working properly - trace it back to make 
sure (no "light" at switch connector), and you can try cleaning it with 
some contact cleaner.  Or replacing it with a used one.  Or putting a 
big red button on your dashboard...

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/