Problem: Air (hot & cold) blowing out foot vents only.

Already Tried: Replaced existing controller with used controller. Replaced "mode" door actuator with new one from parts store.

Other issues: AC recirculate does not light up on either controller. If the "fresh air" door is broke, will it still light up?

Comments: no matter were I put the vent selector it blows at the foot only. Are there possibly some fuses that power these actuators? Maybe I have two bad controllers? Maybe parts house sold me a bad actuator?
HELP

Thanks, Eric

 

There are 3 actuators in the truck. Maybe you changed the wrong one. Maybe the door is jammed and the actuator is still good.

 

Thank you sir. How would I know if a door is jammed? Is there a way to test these actuators off the vehicle?

 

Got 12 volts at the mode door, nothing at the blend door O. Tried both used controllers and nothing.
Sound like I need to replace the controller????
with a new one?


Thanks.

 

Apply voltage to blend door if it moves problem is the controller

 

Do not apply 12 volts to the actuator unless it is installed. It will go all the way to one side and get stuck and become unusable. I did this once and had to take it apart and realign the gears to get it working again.

 

I am testing it with a multimeter - taking the plug connector off and then testing the plug with the key in the on position. I get 12 volts at the mode door but not the blend door (which by the way looks hard as heck to get off - there is a steel bar in the way)

Going to pick up a new controller today since both tested the same.