Blend actuator is not working

Hi and thanks for using 2CarPros. Com.

You need to simply supply power to the blend air door actuator.

Here are the directions specific to your vehicle for testing the actuator. The two attached pictures correlate with these directions. If the motor fails to run, replace it.

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Air Mix Control Motor Test

Special Tools Required

- Backprobe Set 07SAZ-001000A (2)

NOTE: Before testing the motor, check for HVAC DTCs See: Heating and Air Conditioning > Initial Inspection and Diagnostic Overview > How To Troubleshoot The Heating And A/C Systems (Without Climate Control).

1. Disconnect the 7P connector from the air mix control motor.

NOTICE
Incorrectly applying power and ground to the air mix control motor will damage it. Follow the instructions carefully.

2. Connect battery power to the terminal No. 1 of the air mix control motor, and ground the terminal No. 2; the air mix control motor should run, and stop at Max Hot. If it doesn't, reverse the connections; the air mix control motor should run, and stop at Max Cool. When the air mix control motor stops running, disconnect battery power immediately.

3. If the air mix control motor did not run in step 2 See: Heating and Air Conditioning > Component Tests and General Diagnostics > Air Mix Control Motor Test (Without Climate Control), remove it, then check the air mix control linkage and door for smooth movement.

- If the linkage and door move smoothly, replace the air mix control motor See: Air Door Actuator / Motor, HVAC > Removal and Replacement > Air Mix Control Motor Replacement (Without Climate Control).
- If the linkage or door sticks or binds, repair them as needed.
- If the air mix control motor runs smoothly, go to step 4 See: Heating and Air Conditioning > Component Tests and General Diagnostics > Air Mix Control Motor Test (Without Climate Control).

4. Measure the resistance between terminals No. 5 and No. 7 of the air mix control motor. It should be between 4.2 and 7.8 kOhms.

5. Reconnect the air mix control motor 7P connector, then turn the ignition switch to ON (II).

6. Using the backprobe set, measure the voltage between terminals No. 3 and No. 7.
7. If either the resistance or the voltage readings are not as specified, replace the air mix control motor See: Air Door Actuator / Motor, HVAC > Removal and Replacement > Air Mix Control Motor Replacement (Without Climate Control).
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If you determine the motor is bad, here are the directions for replacement. Picture 3 correlate with these directions.

AIR MIX CONTROL MOTOR REPLACEMENT (WITHOUT CLIMATE CONTROL)
Air Mix Control Motor Replacement

1. Disconnect the 7P connector (A) from the air mix control motor (B). Remove the self-tapping screws and the air mix control motor from the heater unit.
2. Install the motor in the reverse order of removal. Make sure the pin on the motor is properly engaged with the linkage. After installation, make sure the motor runs smoothly.
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I hope this is helpful. Let me know what you find. Also, if you have other questions or need help, let me know.

Take care,
Joe

Hi and welcome back.

Based on your specs, the air mix control motor needs replaced. At max cool, it should only be .5V not 4.3V.

Let me know if this takes care of the problem. I attached the directions in the earlier post for removal and replacement. However, if you need anything, let me know.

Take care,
Joe