The Outcome (Part 2) of "Audi just shuts off no warning while driving and won't restart"

[Marc Boucher]

I'm still curious why they'd replace the coil if they identified the problem 
as a defective ground wire at the ECU.  Is the ECU grounded in the passenger 
compartment, or via a ground wire on its harness?

On the way home, the check engine light came on, then went out 30 seconds 
later.  When I got it home, I pulled the following codes:

2312
2232
1111
2411
2411
2132
2122
2123
2312
1111

I don't know if the bad grounding of the ECU made it give out spurious 
signals.  So I'll clear the codes tomorrow and watch to see which ones come 
back.

--------------------------------------------------
From: "Huw Powell" <audi at humanspeakers.com>
Sent: Tuesday, August 16, 2011 10:59 PM
To: "Marc Boucher" <mboucher70 at hotmail.com>
Cc: <quattro at audifans.com>
Subject: Re: The Outcome of "Audi just shuts off no warning while driving 
and won't restart"

> Sounds like you got out cheap, and thanks for posting the resolution.
>
> The formatting on the invoice/report looks like it might be the same 
> software Carworks uses, though perhaps the Windows version...
>
> On 8/16/2011 10:37 PM, Marc Boucher wrote:
>> I picked the car up tonight. It was late, and only the receptionist was
>> there, so I didn't speak to a mechanic. But the bill is somewhat
>> detailed. Here's what is says:
>>
>> REPLACE IGNITION BOOSTER
>> Temporarily install ordered ignition module, sill no-start.
>> Check wiring from ignition distributor coil and ignition ECU.
>> Determine ground signal wire from ECU not functioning.
>> Repair ground wire and roadtest to check.
>>
>> All of that was only 1/2 hour of labor, which is pretty good in my view
>> for a non-audi shop. I can't imagine getting all that done in 1/2 hour.
>> Then again, on the day it arrived they charged 0.8 hours labor to
>> "verify cranks but doesn't start".
>>
>> That's all the labor. For the parts, they've charged me $61 for an
>> ignition coil. Not certain why they'd charge me for an ignition coil if
>> the problem was a ground signal wire. When I can see it in the daylight,
>> I just want to verify that there is in fact a new coil in place.
>>
>> MC
>>
>>
>>
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>