Air Mix Control Motor Test

Air Mix Control Motor Test

Special Tools Required

- Backprobe set, 07SAZ-001000A
NOTE: Before testing the motor, check for HVAC DTCs.

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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 terminal No. 1 of the air mix control motor, and ground 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, 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.

- If the linkage or door sticks or binds, repair them as needed.

- If the air mix control motor runs smoothly, go to step 4.

4. Measure the resistance between terminals No. 5 and No. 7. It should be between 4.2 to 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 (07SAZ-001000A), 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. Air Mix Control Motor Replacement