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  #1  
Old 04-05-2011, 09:14 AM
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Climate Control

My climate control will only blow out through the dash vents. It will not redirect the flow to the defroster nor the floor no matter what position the knob is in. Any ideas?
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  #2  
Old 04-05-2011, 02:12 PM
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Re: Climate Control

It could be your control head, it could also be your mode door actuator.
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Old 05-03-2011, 08:28 AM
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Re: Climate Control

On an 05 my money is on a broken/stuck blend door... very common failure, pretty easy/cheap fix if you do it yourself.
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Old 05-03-2011, 12:08 PM
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Re: Climate Control

i know this was a huge problem in WJs the blend door would fail and the default was to blow the air through the defrost. i dont know if it is the same for the WK, but there are simple repairs for this failure.
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Old 05-03-2011, 08:51 PM
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Re: Climate Control

When iīm not wrong blend doors are just the temperature regulating doors, they donīt do anything with where the air comes out. When the air only comes out from the dash vents, it can only be the mode door actuator which failed or the mode door which is stuck or the controlswitch for this door.
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Old 05-04-2011, 04:23 PM
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Re: Climate Control

And how would you go about fixing this??

I have kinda the same prob.. but mine blows BLANK+floors. No matter where, it blows on the floors as well as the place I aim it at.
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Old 05-05-2011, 08:18 PM
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Re: Climate Control

a few ways to fix it, do a youtube search and it will show you the easy/quick way. Basically you'll have to drop the glove box and the side panel to get your hand in there. Depending on if the stop notch is broken, or if the door gear is stripped will determine how expensive and a pita it is to fix. IF you don't care about ever using hte floor vents again you can just push the flap back down and it should stay there, it just gets hung up/stuck halfway which is why it always blows partiall on the floor vents.
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Old 05-06-2011, 12:37 AM
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Re: Climate Control

I searched youtube and was only able to find a man repairing his heater core..

What would be the title of this?
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Old 05-08-2011, 09:26 PM
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Re: Climate Control

I couldn't seem to find the video either, but below is a write up on repairing/diagnosing it. On that note I was mixing up my terminology, Frango is correct its called a mode or actuator door. They all use the same actuators and very similar door flaps, just different locations. Anyways read below and enjoy. I'll keep trying to find the video, it used to be on youtube a few years ago when I did mine.

The mode door is controlled by a small electricmotor called and actuator. the actuator is mounted on the HVAC case. It can fail or the small gear on the end can strip. Most common they fail. You can get to actuator, unbolt it, leave plugged and work controls to see if it moves. If not, you can replace OR a scanner is need to fully diagnose the problem or recalibrate,. Yours most likley does not need recalibrating but is bad.

REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE NEGATIVE BATTERY (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH.

NOTE: The heater-A/C system is equipped with two mode door actuators. One for the air doors for the outlets in the instrument panel and one for the air door for the rear seat/console outlets.


  1. Disconnect and isolate the negative battery cable.
  2. Remove the instrument panel silencer from the driver side of the instrument panel.
  3. Remove the three screws (1) that secure the mode door actuator (2) to the driver side of the HVAC air distribution housing (3).
  4. Remove the mode door actuator from the air distribution housing and disconnect the HVAC wire harness connector (4) from the actuator.
  5. Remove the mode door actuator from the vehicle.
INSTALLATION


  1. Position the mode door actuator (1) into the vehicle.
  2. Install the mode door actuator onto the driver side of the HVAC air distribution housing (2). If necessary, rotate the actuator slightly to align the splines on the actuator output shaft (3) with those on the mode door cam (4).
  1. Install the screws (1) that secure the mode door actuator (2) to the driver side of the air distribution housing (3). Tighten the screws to 2 N.m (17 in. lbs.).
  2. Connect the HVAC wire harness connector (4) to the mode door actuator.
  3. Install the instrument panel silencer onto the driver side of the instrument panel.
  4. Reconnect the negative battery cable.



This vehicle uses two mode door actuators (1) which are reversible, 12-volt direct current (DC), servo motors. The mode door actuator for the panel/defrost/ demist/floor air doors is located on the driver side end of the HVAC air distribution housing. The mode door actuator for the rear floor/console air door is located on the rear of the air distribution housing near the front of the floor console area. The mode door actuators are mechanically connected to the mode-air doors.

The mode door actuator is interchangeable with the actuators for the blend-air door(s) and the recirculation-air door. Each actuator is contained within an identical black molded plastic housing with an integral wire connector receptacle (2). Each actuator also has an identical output shaft with splines (3) that connects it to its door linkage and three integral mounting tabs (4) that allow the actuator to be secured to the HVAC housing. The mode door actuator does not require mechanical indexing to the mode-air doors, as it is electronically calibrated by the A/C-heater control.

The two mode door actuators are connected to the A/C-heater control through the vehicle electrical system by dedicated two-wire leads and connectors of the HVAC wire harness. The mode door actuators can move the panel/ defrost/demist/floor air doors in two directions. When the A/C-heater control pulls the voltage on one side of the motor connection high and the other connection low, the mode-air doors will move in one direction. When the A/C-heater control reverses the polarity of the voltage to the motor, the mode-air doors moves in the opposite direction.

When the A/C-heater control makes the voltage to both connections high or both connections low, the mode-air door stops and will not move. The A/C-heater control uses a pulse-count positioning system to monitor the operation and relative position of the mode door actuators and the mode-air doors. The A/C-heater control learns the mode-air doors stop positions during the calibration procedure and will store a diagnostic trouble code (DTC) for any problems it detects in the mode door actuator circuits.

The mode door actuators cannot be adjusted or repaired and, if faulty or damaged, they must be replaced

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  #10  
Old 05-08-2011, 09:30 PM
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Re: Climate Control

^^^Columbia, SC. Wasup.
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