[V8] Audi V8

[urq]

... sorry to take a while to get back to you ... sometimes I don't get to 
check this account every day ...

You may want to try posting to the entire list ... I have almost no 
experience with the 4.2 models.  What you will want to do is to get a wiring 
diagram for your car ... or find someone who has one.  I don't know if the 
4.2s are like the pre-92 models ... where only cars destined for California 
had the check engine light hooked up.  Is the car you are working on listed 
as meeting California emissions requirements on the sticker under the hood? 
If so, the MIL light should be hooked up.  If you don't have the wiring 
diagram, you may be able to tell by looking in the Owner's Manual.  Most of 
the pre-92 V8s do not have the light hooked up ... you have to dig the 
connectors out of the wiring looms to make it work.

I would not try hacking in some other way of making the light work ... you 
can lay good money on the fact that Audi put the wires you need in the car 
... they just may not be connected.

I'll post this response to the list in the event that someone has direct 
experience with the MIL on the newer cars ... Good luck!

Steve B

San Jose, CA (USA)
>
> I saw your comments on the Audifans site for someone's question and wanted 
> to email to see if you would offer some suggestions on an issue with my 92 
> 4.2 V8. The ECS check engine light does not come on. We are trying to prep 
> it for smog. We have determined there is no power to the bulb. I'm 
> thinking in a way that's good news because if I understand correctly the 
> ECU switches the ground on and off to complete the circuit. The wiring 
> diagram is difficult to read and I'm hesitant to start messing around and 
> connect another 12 volt positive source to the bulb holder, and besides 
> there really isn't anywhere easy to attach something to being right in the 
> circuit board as it is? Can you offer any insight for suggestions toward 
> this? Your response is greatly appreciated, Steve. Thanks again.
>
> Joe
>