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Armada cooling system
08-13-2018, 12:43 AM
Post: #1
Armada cooling system
I have a 2013 Nissan Armada with dual heating/cooling system and rear controls. Currently the passenger side and rear zone will heat and cool, but the driver side will just blow air. No matter what temp is set. What are some things I can check?
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08-13-2018, 06:17 AM
Post: #2
RE: Armada cooling system
I am unfamiliar with that system so I can only give you some generic advice. The first thing that I always check is the fuses. If it uses an electronic controller it could have separate fuses for each side. On other vehicles that I have repaired it was the dash control module that needed replaced. Also check the coolant level. If the coolant is low it won't make it to all of the heater cores. If you find that the coolant is low you will also want to question "Why." Check for leaks! And having the computer scanned with a Full Function Scanner could point you in the right direction and save money in the long run if none of the above solves the problem. The system is probably controlled by a "BCM," Body Control Module, that can be accessed by the scanner. If you discover codes, Record the code NUMBERS and post them here for review and have the codes cleared. If codes return, you know that you have a recent problem.

Hope that helps. Please let us know what you find. Rupe is on vacation but he is returning soon. He may have more options for you?

Thanks for using the forum,
Garner

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08-13-2018, 10:50 AM
Post: #3
RE: Armada cooling system
The system uses electric actuators to move the internal "flaps" that control where the air goes and what the discharge temp will be. Sometimes a flap gets stuck (debris or broken) but most times the actuator itself fails. As Garner stated, a scanner with the ability to read HVAC info will point you in the right direction. Not saying the actuator itself always needs replacing but once you know which one is having issues then you can do a visual inspection for linkage binding, screws that fell out, etc.
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