General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

HVAC electrical issues?

Thread Tools
 
Search this Thread
 
Old Jul 14, 2014 | 01:18 PM
  #11  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,099
From: United States
Default

One other thing, on some models, it won't have the lower dashboard cover; so, you can directly see and access the driver's air mix control motor without removing a cover.
 
Old Jul 14, 2014 | 04:46 PM
  #12  
kellymarie0518's Avatar
Thread Starter
Joined: Jul 2014
Posts: 11
Default

Thank you so much! I will check it out.
 
Old Jul 14, 2014 | 05:46 PM
  #13  
kellymarie0518's Avatar
Thread Starter
Joined: Jul 2014
Posts: 11
Default

Another question...the fan does work, does that mean it's something besides the motor? There is air blowing from both vents, but only the passenger side is cool.
 
Old Jul 14, 2014 | 06:12 PM
  #14  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,099
From: United States
Default

The air mix motor controls/operates the air mix door. The air mix door directs the flow of air (hot or cold).

Your model has dual climate control, where there is a separate driver's side air mix control motor and a passenger side air mix control motor controlling the respective driver's side air mix door and the passenger air mix door. In your case, the driver's side air mix motor probably is not working; so, the driver's side air mix door does not change position to direct air properly on the driver's side. It probably is stuck where it is not directing fully hot or cold air on the driver's side. Your passenger side sounds like it is working. Attached are illustrations of the flow of hot and cold air via the air mix doors for dual climate control. Hot are the black arrows and cold are the white arrows.

On models with manual A/C, without dual climate control, they only have one air mix control motor.

The blower fan running means that probably is okay (the blower motor is a separate motor and located behind/under the passenger dash side).

Edit: Your driver's side is not getting the proper temperature mix of air. Your car still has a mode control motor (Vent (face area), Heat (feet area), Heat/Vent, Heat/Def, and Def) and a recirculation control motor. If just the driver's air mix control motor was bad, it doesn't mean no air flows.
 
Attached Thumbnails HVAC electrical issues?-dual-air-mix-control-system.jpg   HVAC electrical issues?-air-mix-door.jpg  

Last edited by redbull-1; Jul 14, 2014 at 06:46 PM.
Old Jul 14, 2014 | 09:05 PM
  #15  
kellymarie0518's Avatar
Thread Starter
Joined: Jul 2014
Posts: 11
Default

Again, thank you so much! I am happy to invest in the motor and give it a try.
 
Old Jul 14, 2014 | 09:30 PM
  #16  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,099
From: United States
Default

You're welcome.

Just make sure to align/engage the pin from the motor to the linkage, like shown in the instructions I previously posted. It shouldn't be too difficult to replace. Things should install relatively easy, don't force anything. Usually something is not aligned if it doesn't install easily.

Let me know how it goes.
 
Old Sep 11, 2014 | 08:25 AM
  #17  
kellymarie0518's Avatar
Thread Starter
Joined: Jul 2014
Posts: 11
Default

Hello again! Update:


I replaced the blower motor, and everything works exactly the same way as before. Living in Wisconsin with winter right around the corner, I really need to make sure I have heat...do you have any other suggestions? The way I see it, my options are to spend $1000 in labor to have the dash torn apart to see if it's a blend door, or trade it in.


Any suggestions you have would be much appreciated. Thank you!
 
Old Sep 11, 2014 | 08:34 AM
  #18  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,099
From: United States
Default

Was the driver's air mix control motor replaced (post #10)?
 
Old Sep 11, 2014 | 09:24 AM
  #19  
kellymarie0518's Avatar
Thread Starter
Joined: Jul 2014
Posts: 11
Default

No, I did not replace that motor...could you share more information about what it is and where it's located? Is it something I can do myself, with moderate mechanical skills?
 
Old Sep 11, 2014 | 09:29 AM
  #20  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,099
From: United States
Default

My previous post (post #10) includes a photo and instructions on replacement. The trouble code you pulled indicate the issue was with that circuit.

On the driver's side, look under the center dash area. It may or may not have a plastic cover that needs to be removed (some models have the cover, while other don't). It may be readily visible under the dash if it doesn't have the cover.
 



All times are GMT -5. The time now is 03:14 PM.