1991 coupe with the 7A 20V engine

   #1  

cgharibo

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I have a 1991 coupe with the 7A 20V engine, Hitachi ECU and Bosch ISV.

The Ross-Tech VCDS software can connect to the ECU and check/clear engine codes, perform output tests, read measuring blocks and enter basic settings mode. These are all documented in Bentley.

The VCDS also reads channels 1-15 and I have no idea what those numbers mean. The VCDSalso enters the adaptation section and all I can do is reset the adaptation which always reads 000 - I don't know what I am doing there either or whether of I can do anything besides reset the adaptation. These areas are not documented in Bentley or anywhere else I checked. Does anyone on this forum have any links or PDFs so I can get the most out of 15 channels VAG-COM reads, adaptation and my 1991 7A 20V?

Thank you!
 
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Jack@European_Parts

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Welcome to the VCDS forum OP

Post a scan of what you have please & respective measuring block values or adaption channels of each............ :rolleyes:

What are you attempting to achieve?

Have you attempted blink codes too or only rapid data transfer?

Does you car support MIL?
 
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