99 9-3SE ACC blower stopped working - help! - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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99 9-3SE ACC blower stopped working - help!
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Posted by Jim (more from Jim) on Fri, 14 May 2004 11:57:53 Share Post by Email
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A few days ago, the Automatic Climate Control's fan/blower stopped working. It will not turn on, regardless of the setting on the ACC panel (auto, fan low/med/high).

With the help of other posts, I have accessed the blower (remove wipers, remove black plastic over, remove cabin air filter, etc) and cleaned all the terminals. I used a volt/ohm meter and found 2 things:

A. Both leads (brown/ground & orange-red/batt) measure 12V.
B. The corresponding terminals are connected (ohm'ed out 0) as expected suggesting that it is not a corrosion problem.

If I manually short out the brown lead, the fan WILL turn on. This proves that the blower is working.

My question is are both brown and orange/red leads supposed to be hot (12V)? My guess is that the brown is by default hot, until the fan is supposed to be on (which then, orange terminal is switched to ground by some relay or control unit).

I've seen some posts on the fan resistor, but with no details on what it does. Any help would be appreciated. Thanks in advance.

Jim
99 9-3SE HOT

posted by 64.53.17...

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