1990 Audi TQ 200 Start Problem Need ECU

[Brett Dikeman]

On May 9, 2005, at 10:11 PM, Keith Sturtz wrote:

> Well all looks like my start problem may be Mac 14 ECU unit i get  
> blink code (diagnostic) 2111 Speed sensor error and 2113 Hal pick  
> error or bad ICU

I believe both error codes are normal for a stationary engine that  
hasn't had an attempted start since last ignition power-on, on one of  
the pre-motronic ECUs. SJM's site or the archives should clarify/ 
correct- or another lister will ;-).

My memory on this is very fuzzy, but I think cranking for 15 seconds  
will clear them, because then the ECU sees signal from the sensors

If you have the factory manuals- follow the troubleshooting procedure  
for a no-start, and do NOT ignore the criteria/requirements for the  
troubleshooting procedure if at all possible.  Failure to diagnose  
after following a good troubleshooting procedure is almost always  
caused by assumptions that were not valid.  For example- the 5000  
manual specifically mentioned cranking the engine and leaving the  
ignition ON, before doing a code-dump, if you had a no-start.

Brett
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