TwinTurbo.NET: Nissan 300ZX forum - The a/c vents and doors are moved by servos
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Subject The a/c vents and doors are moved by servos
     
Posted by Zvil (FL) on March 21, 2013 at 4:52 PM
  This message has been viewed 391 times.
     
In Reply To A/C only blowing out of dash/defrost posted by Jmsas300na on March 21, 2013 at 03:20 PM
     
Message Those servos are commanded by the main A/C computer which is located in the driver's side foot area. The main computer is controlled by the A/C buttons (or knobs) next to the steering wheel. There is most likely a disconnect between the servos and the control buttons OR the servo's motor died or seized. If you hear noise when trying to change the vents then the servo linkages possibly got disconnected or the gears inside the servo had some teeth snapped off.

The last possibility is that the main computer isn't receiving a correct signal or is malfunctioning.

*disclaimer*: all that I say may be true or I may be completely wrong and I accept that.... please, it is your duty as another person on the internet to impolitely tell me how wrong I am :)

"The dreaded 2nd windshiled wiper swipe when you turn it off its almost like tis showing you that it's boss, and it doesn't have to stop when you tell it to :("-College Boy

(discussion on ptu relocation)
"No good reason to put it there anyway. -Bernie (NoVA)
False -vorpalZ
False. -Bernie (NoVA)
You're correct, there are 3 good reasons -vorpalZ
False. -Bernie (NoVA)
Wow, right again, just remembered another, make that 4 -vorpalZ"
XD

     
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