Electrical Questions

[Alex Kowalski]

First part of your question:

[Disclaimer:  I've never troubleshot this before, it's straight from the manual]

If the climate control system on that '85 in Bulgaria is the same as the one on the US model, the parts of the circuit involved are:

Terminals 85 and 86 of the Rear Defogger Relay (should be under the dash, the lower rightmost relay, #12 on the diagram)
Fuse 16 in the Fuse/Relay Panel (30A)
Terminal #9 on the A/C control head.  4th pin from left, bottom row of the connector viewed from the rear -- Brown Wire with White stripe (BR/W)

According to the Bentley, Terminal 86 of the relay is connected to Terminal 9 on the A/C control head, which triggers the relay on
and powers the rear window defogger through fuse S16.  

HTH,
Alex Kowalski
'87 5KCSTQ 


> Message: 8
> Date: Fri, 4 Feb 2005 18:09:02 +0200
> From: "Christo Atanasov" <chris at maimex.bg>
> Subject: Electrical Questions
> To: "Quattro List" <quattro at audifans.com>
> Message-ID: <021f01c50ad3$d8318b70$6f00a8c0 at LAPAITOPA>
> Content-Type: text/plain;	charset="koi8-r"
> 
> Hi there,
> I have some wiring questions about '85 Audi 200 2.1Ti (FWD).
> First of all may someone tell me how electronic climate control operates rear 
> glass and mirrors heaters, because in my case I have switch for these on control 
> module but whole module does not work. And I realy need these heaters now. I 
> plan to install external switch, but don't know wich wire to brake by this 
> external switch.
> Also I want to make separate programmable ignition module, but I don't know what 
> signal tachometer expect to receive. Folowing wiring diagrams I saw that this 
> signal come from ECU instead of ignition coil as usual. How many pulses/rev it 
> expect and what shape?
> 
> 
> Christo Atanasov,
> '85 Audi 200 2.1Ti (KG)