[s-cars] 3B ECU part number, anyone?

[Ian Duff]

I agree on everything except the last letter bit.

As an example, wheels listed in the FA are as follows:
pn                width   dia   ET     Ian's description
4A0 601 025 B     7       15    45     8 spokes
4A0 601 025 D     7.5     15    40     6 tapered spokes, not AVUS
4A0 601 025 E     8       16    40     5 spokes
4A0 601 025 M     8       17    40     10 spokes

Looks like Hans und Franz have some fun at our expense by changing just the
last letters.

-Ian Duff.
-----Original Message-----
From: jimk at spotgraphicsinc.com [mailto:jimk at spotgraphicsinc.com]
Sent: Wednesday, 15 January 2003 12:16
To: Ian Duff
Cc: s-car-list at audifans.com
Subject: Re: [s-cars] 3B ECU part number, anyone?


Thanks.  I would venture a guess that the reason for the two different
numbers
is because the first 3 digits denote the model family but I could be wrong.
If
I remember at all correctly, the first group is model (as in 100, S4, A4
etc),
the second group is component group (electronics, lights, interior etc.).
Then
the lst group denoted the specific item (as in left headlight, ECU, front
seat).  I coul dbe wrong but that would explain why the first three digits
ar
different and the other 6 are the same.  The letter (or letters) at the end
denote the version - generally minor updates to the code etc.
VW codes work the same way.
I would guess that a good partsperson (if that exists) could eventually look
at
a part number and tell you exactly what the part is just by interpreting the
code.
If anyone can confirm or clarify further, that would be great.
Thanks,
Jim

Ian Duff wrote:

> I looked at the 1991 200 quattro (Type 44) in the US Family Album and it
> indicated the pn for a "motronic control unit" is 447 907 404 AA. Then I
> looked at a 1991 S2 (Type 89) in the Euro Family Album, and it showed a
> "electronic control unit", "MOTRONIC" as pn 895 907 404 BA. CRAFT is
rearing
> its ugly head, did a 3B show up in any other cars?
> -Ian Duff.
> -----Original Message-----
> From: s-car-list-admin at audifans.com
> [mailto:s-car-list-admin at audifans.com]On Behalf Of
> jimk at spotgraphicsinc.com
> Sent: Tuesday, 14 January 2003 16:46
> To: s-car-list at audifans.com
> Subject: [s-cars] 3B ECU part number, anyone?
>
> Subject says it all.  Any help would be appreciated.
> Thanks,
> Jim Klein
>
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