Built in Diags for e46?

Hey all, I've got an '01 330xi with some climate control problems. The posts I read make me want to blame the Final Stage Unit, but I'd like to be sure. I used to have an older Audi (yes, I know it's
dangerous to say that in a BMW forum), and it had a built in diagnostic system you could tap into through the climate control display. Does my car have something like that?
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If the blower speed has a mind of its own - or sometimes doesn't run at all or goes to full - while the speed display is normal, 99.99% the final stage resistor. In auto, however, it does vary its speed until near the correct temp is reached. And on a cold day after a cold start if heat is called for it won't blow hard until the engine warms up.
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*What are the pink bits in my tyres? Cyclists & Joggers*

Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
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Not sure if it throws an OBD fault code for this case, if it does, you can read that error if you have an OBD scanner (there's a 20pin OBDII port in the footwell at the driver side)
B
On 5/16/07 6:06 AM, in article snipped-for-privacy@p77g2000hsh.googlegroups.com, "nhartley"

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Brian Lam wrote:

No OBD codes - those are for emissions components and systems only.
Replacement is the test for this component. There are tests you can do with a dedicated computer/BMW-code scanning tool - but since these tools start at $500 - that makes buying one for this test not a rational thing to do. A dealer could diagnose it for you - cost is typically 1 hour labor - which in the US is running from $100-125/hour. Again - not a rational thing to do with a $40 part.
Given the behavior you describe - as Dave said - its about 99% certain it's the final-stage-resistor.
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Thanks all for your suggestions. The symptoms are very much the same as has been described, so I guess I'll just get the part and see.
Brian, you say it's a $40 part. Do you know where you saw that price? Everything I see is about $65 and up....
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Sorry, it was admin that said it, not Brian.
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Sorry, that was admin, not Brian.
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nhartley wrote:

Try visiting http://www.bmw-auto-parts-dealer.com - they're a dealer in NJ who discounts for everyone 20%.. that might make it a $50 part..
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Very cool. Thanks!
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