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Date: Wed, 15 Aug 2007 17:07:58 -0600
From: Charles <>
Subject: Re: SAAB 9-5 climate control?

DervMan wrote: > "Charles" <> wrote in message > news:hPOdna3aPa0GsSLbnZ2dnUVZ_oqhnZ2dnospamnet... > > DervMan wrote: > > > >> "Charles" <> wrote in message > >> news:YMCdnSZ1xcx04yPbnZ2dnUVZ_sCtnZ2dnospamnet... > >> > Today I took our 2001 Aero 9-5 with manual tranny out to run errands. > >> > Driving down the highway, it is throwing heat. Outside temp reads 78 > >> > (and climbing because I am losing altitude as I head towards Denver > >> > from > >> > 2000 feet above it) and it is not like the A/C is not working, it is > >> > thinking I need heat! > >> > > >> > I finally set both sides to LO and got A/C. After my first stop on > >> > restarting it seemed OK again. I need to look at the manual to see if > >> > there is a reset for the ACC unit like on the 9000's, but has anyone > >> > had > >> > this happen or have a suggestion? > >> > >> > >> My 9-3 has the opposite problem, which I'm positive is the cabin air > >> temperature sensor. The fan is damaged and it doesn't spin all of the > >> time, > >> so as the dashboard warms up, so too does the sensor - and the AAC thinks > >> it > >> needs to cool things down. > >> > >> Have you run the diagnostics on the AAC unit? > > > > How do I do the diagnostics? > > <reformatted> > > You need to push down a button, hmm, have you the handbook? > > Let me know if not and I can tell you what it is for the 9-3. > > I see. The diagnostic tests are described in the manual but no way to look up fault codes, it seems. However, I checked and found that my Mitchell on demand system (CD-ROM shop manual) that I bought for my 92 9000 T covers the 9-5 through 2003 as well! It describes the tests and list fault codes. I had one fault code (12) which is a door stepper motor open or short to ground. Not sure whether this is a fault which happened that one time when I got heat instead of A/C or a present fault, though. I am hoping it was a fault that 'fixed itself', at least for now. The 9000 T ACC has a similar operation for programming and testing but it does not give any codes, just the number of faults found. So I can look up codes for anyone who has a problem and no shop manual. I also have the Electronic Parts Catalog which covers from early 80's through 2002 or 2003 depending on which module and which car model. Thanks, Charles

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