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Car Will Not start!. Audi S4 01 6sp.

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Old 03-10-2008, 03:05 AM
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Default Car Will Not start!. Audi S4 01 6sp.

Please help me diagnose this one:

Audi S4 2001.5 6SpMT.
Car will not Crank.

Checked Clutch Position Switch ( the one at the back ), It shows continuity when the pedal is depressed at its connector.

Air bag Controller seems to be Damaged. I completely disconnected the controller for the purpose of diagnosis. Car still wont start with it removed. Airbag controller has 8 codes that will not clear. I assume it's toast?

No Codes on the Central locking Module.

If I manually Ground the bottom pin of the Starter relay, and then turn the Key.
the car will crank and start fine. Drive without issue, ect..

I would like to put my dash back together, But I can not seem to find the problem.

What other Systems keep the Starter relay from closing. I assume this is done by bringing that leg to ground?

I see that the Central Locking System is on it, Also the Clutch position switch is there. There is some mention of the Air Bag module, but other people have reported that their car drives and operates perfectly fine with out it ( reason i removed it was to eliminate that variable ).

The Clutch main switch shows activity through Vag-Comm, meas block 066.

Any ideas?


Regards.
Old 03-10-2008, 09:32 AM
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Please post complete Auto Scan results.....
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