azadmin Posted August 11, 2016 Share Posted August 11, 2016 After working fine during an around town/errand adventure in triple digit temps with high humidity (for Arizona), the AC wouldn't turn on when I was leaving my last stop. I noticed what I thought was a large condensation puddle under the car when I returned to head home but I wasn't sure it was there before I parked or it was even from my car so I just filed that observation away until writing this post. The fan symbol showed multiple bars but there was no fan. I ran the fan settings from least to most and back and then up again--nothing. I hit MAX and the dashboard temp went to 60 as it normally does but still no fan. I turned the AC off while driving and then back on---no change. When I got home, I checked the belt--it appeared to be working fine For the past couple of days, I thought I was hearing a whining sound from under the hood when I turned off the car but it only lasted a few seconds. No smell, AC worked fine on those trips...nothing to indicate a future problem that was obvious. The car has 52,000 miles, it was purchased used with 33,000 in February of 2014 and other than new tires, wiper blades and a transmission "re-flash" while under warranty, has been trouble free. I've checked various posts on this topic and my take-away is it could be anything or everything related to the AC system. My initial thought is a fuse problem but it appears it could any one or all of 3 -- from what I've provided, any cascade of recommendations of what to do/how to fix (easiest to time to trade) will be appreciated. 0 Quote Link to comment Share on other sites More sharing options...
akirby Posted August 11, 2016 Share Posted August 11, 2016 Easiest test would be to see if you're getting voltage to the blower motor - it's right under the glove box and easy to get to. If you are then the motor is bad. If not check the fuses. If they're ok then its probably the hvac controller but I'm sure one of the techs will be along shortly with more info. 0 Quote Link to comment Share on other sites More sharing options...
dcw1 Posted August 11, 2016 Share Posted August 11, 2016 Seems my suggestion was blocked. 0 Quote Link to comment Share on other sites More sharing options...
akirby Posted August 11, 2016 Share Posted August 11, 2016 Seems my suggestion was blocked. It wasn't a valid suggestion. You were just being childish and petty and I deleted it. Let it go. 0 Quote Link to comment Share on other sites More sharing options...
eGuru Posted August 12, 2016 Share Posted August 12, 2016 (edited) Make sure you are measuring directly across the motor power terminals. Don't measure using a chassis ground and then to a terminal on the motor. The PWM motor speed control pulls the "negative" terminal to ground. If it isn't doing its job, both motor terminals will measure battery voltage with respect to chassis ground. If you aren't getting almost full battery voltage across the blower terminals, it may be a defective motor speed control. Edited August 12, 2016 by eGuru 0 Quote Link to comment Share on other sites More sharing options...
azadmin Posted August 12, 2016 Author Share Posted August 12, 2016 My thanks to all! I went to the under dash fuse box and found I needed to replace the 15 amp fuse---so far, things are working fine! We'll see if further problems develop since I'm not sure what caused the fuse to short in the first place. This is a great place to receive good information and I'm glad I found it! 0 Quote Link to comment Share on other sites More sharing options...
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