Re: Blower not working...Help1 - Saab 9-3SS Bulletin Board - Saabnet.com
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Re: Blower not working...Help1
Posted by 20years (more from 20years) on Tue, 11 Mar 2008 19:05:12
In Reply to: Re: Blower not working...Help1, Pat, Tue, 11 Mar 2008 12:12:03
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I have replaced a couple dozen fan speed controllers. It is a large transistor with a big heat sink that controls the ground path to the constantly powered fan. It mounts at the bottom of the fan, underneath the glove box up against the firewall/floor for MCC cars and at the bottom of the fan for ACC cars. They are different for automatic and manual. ACC cars will set a code generally while MCC cars can't set codes as the MCC panel does not communicate on any bus. Here's a tip. I have been told that jump starting or applying a battery charger at over 20 amps without removing the big orange fuse at the left side of the dash can fry the fan speed controller.
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