Check Engine Light "ECS" on 89 200TQ

[scott.john.mockry@bangate1.tek.com]

Bob,

In the Audi service publication "1989 New Model Introduction Information" they note that on
the 200 Turbo/Quattro models the "check engine light" is no longer used. They no longer use
this check  engine light to flash out the ECU fault codes. If you want to get the fault codes out
 of the ECU  you now need to use an LED (with resistor)  indicator light that must be plugged 
into the 3 pin diagnostic connector located underneath the dashboard (drivers side). The 
vehicles operators manual does describe this "check engine" indicator light but it has a
disclaimer * indicating "where applicable". 

Bob, concerning your idle problems, have you checked your idle/full throttle switch yet 
for a bad internal solder joint?

Scott M.

>From: Robert Myers <rmyers@wvit.wvnet.edu>
>Date: Fri, 15 Mar 1996 13:55:51 -0500
>Subject: 200TQ Factory assembly faults
>Hey Y'all,
>While messin' and tryin' t' fix my fluctuating idle problem I found that the
>"Check Engine" light bulb was not located behind the "Check Engine" hole in
>the Instrument Cluster (IC).  TEXT DELETED
>I had not realized that the light is s'posed to come on every time the
>ignition is turned on and to go out after the engine is started.  I had
>never seen the check engine light on at all.  (For good reason as it turned
>out.)
>Does your check engine light come on when the ignition is turned on?  If
>not, may I suggest the possibility that the light bulb might not be where
>it's supposed to be.  You might want to check.