Mode actuator? My vents will not change from floor, vent or defrost?

Here is a guide to help you fix it with a video as well with instructions in the diagrams below.

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

and

https://youtu.be/tY6M92fA2ug

I am attaching the wiring diagram and the instructions on how to replace the mode actuator. We just need to make sure you replaced the correct one because they are commonly mistaken.

If this is the actuator that you replaced then we need to check the voltage coming from the control module because I suspect you have a control module issue.

https://www.2carpros.com/articles/how-to-check-wiring

Please run through this and let us know what you find. Thanks

I have dual climate control and the heat and defrost do not work. I felt the hoses and they get hot so there should be nothing wrong with the heater itself. It seemed to happen after an electrical issue with my truck. My truck was stuck on the heat all last winter. I was luckily able to get it to switch over to AC for the summer. Now it will not switch back to the heat or defrost. When you click defrost, it just blows out harder in the front vents.

Hello,

This sounds like the mode actuator is not working. Here is a guide to help you find the location of the actuator and how to replace it:

https://www.2carpros.com/articles/replace-blend-door-motor

Check the diagrams below.

1 - Air Temperature Actuator - Right
2 - Re-circulation Actuator
3 - Junction Block - Right I/P X4
4 - G200
5 - Blower Motor
6 - Air Temperature Sensor - Lower Right
7 - Air Temperature Actuator - Left
8 - Blower Motor Control Module
9 - Air Temperature Sensor - Lower Left
10 - Mode Actuator

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

I need correct name and or part number for the actuator that moves the air flow from the defrost, to the vents and to the floor. Extend cab truck.

Good morning.

It is called the mode door actuator. It controls air flow out the vents.

Roy

1. Remove the floor air outlet duct extension (1) from the floor duct (2).
2. Remove the center console.
3. Remove the screws from the center console duct.
4. Remove the center console duct.

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5. Disconnect the electrical connection from the mode actuator (10).

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6. Remove the mode actuator mounting screws from the HVAC module.
7. Remove the mode actuator as an assembly with the actuator cam.

A/C only blows hot air, fan speed dial works fine as does dial to select face vent, foot, defrost etc. Compressor is cycling on and off. A/C lines at fire wall engine bay one is hot one is cold. Tested fuses all ok, disconnected battery to try reset. No change. Please advise. Thank you

Check to see if the actuator is working meaning blocking the cool are from coming in as it controls temperature.

You are talking about the actuator on passenger side correct?

The picture shows drivers side but you may have on there as well. I am assuming this is manual control like you do not set the temperature. If it is auto then it is another problem and youwill need to get it scanned.

It may be on the bottom that is for temperature. It may be low on charge as well but this is pretty common. You might try pulling the HVAC fuse as it sometimes will reset these. Pull fuse with key on sixty seconds then reinstall and wait a minute.

Yes it is manual control, thank you for quick response.

I have air blowing they the top n bottom but midlevel n and no cool air blowing as well but AC ia full so how do I know which blend actuator to replace?

Good evening.

Attached is a diagram and procedures for the blend door actuator.

Did you verify the pressures were correct in the AC system?

Roy

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

https://www.2carpros.com/articles/replace-blend-door-motor

REMOVAL PROCEDURE

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1. Remove the instrument panel hush panel.
2. Disconnect the electrical connector (8) from the air temperature actuator (9).

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3. Remove the air temperature actuator retaining screws.

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4. Remove the air temperature actuator.

My front A/C vents won't blow my defrost vents work and so do the vents for my back seats I can't tell that it's reading it when I switch from defrost to front vents but nothing comes out.

This is because you need to replace the mode actuator. Here is a guide that will help you see which one to replace and where it is.

Here is a guide that will help with this.

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Here is a guide that will help with replacing a blend door actuator. Clearly this is different then a mode door but it will help with general info.

https://www.2carpros.com/articles/replace-blend-door-motor

Please let us know if you need anything else to get the problem fixed.

Cheers

The heater control will not actuate to flow to the floor. The fan control works, the thermostat works, the direction control will direct to the windshield, upper vent but will not go to the lower heat duct. Is the control vacuum or electrically actuated and where are the baffle and direction controls located?

This one uses an electric actuator and one motor controls all the modes switches. If you observe it while switching you may see something getting jammed or broken. Look up from the driver's side.

Is the Air inlet door actuator and panel mode door actuator the same?

No there are a few depending on your system there is air inlet, mode and temp actuators pic shows mode actuator which is by gas pedal. Try pulling hvac fuse inside truck for 60 seconds with key on then reinstalling it may reset it.

It only blows out out the vents on top of my dashboard. Help please !