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Mopar Certified
Mopar Certified, Dodge Technician
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Experience:  24 Year Chrysler/Dodge Certified Specialist
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2003 Dakota: defrost..Air blows..vent..this be the control, actuator

Resolved Question:

I have a 2003 Dakota and the defrost outlet doesn't work. Air blows through the other outlets, though the heater outlet works when you move into it from dash vent setting, but doesn't work when you move into it from defrost setting.   Could this be the control, actuator or just calibration. How do you calibrate it?
Submitted: 5 years ago.
Category: Dodge
Expert:  Mopar Certified replied 5 years ago.

There are four mode doors; one defrost/demist door, one floor door and two panel doors. All mode doors are driven by one mode actuator that is attached to a mode cam. Each panel door is driven via a linkage to the panel door shaft. The panel door shaft is connected to two panel levers that are interconnected and driven by the mode cam. The floor door is driven by a floor door shaft that is attached to a lever that is driven by the mode cam. The defrost door has a lever that is connected to the mode cam with a linkage. All mode doors are serviced as part of the HVAC housing and are not available as separate components.

 

The only way to run a calibration procedure is with the dealers scan tool.

 

 

Customer: replied 5 years ago.
This doesn't completely answer my question. What is the likely cause of this? Would replacing the control switch assembly be a possible solution? Would this better be left to a dealer? Any guess as to the cost?
Expert:  Mopar Certified replied 5 years ago.

Since there is only one actuator operating all of the doors, there is either an issue with the lever and linkage for the defrost door, or the door itself may be broken away from its pivot.

 

Replacing the switch assembly won't have any affect on this and I'm doubting a calibration would either......since everything else seems to be working ok......but you never know.

 

I'd suggest you let the dealer try a calibration just to rule that out, otherwise I suspect the dash may need to removed to gain access to the heater box.

 

If the dash has to come out to repair this you are looking at about 6 hours labor plus whatever parts are required.

Mopar Certified, Dodge Technician
Category: Dodge
Satisfied Customers: 11253
Experience: 24 Year Chrysler/Dodge Certified Specialist
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