Driver's Air Mix Control Motor Test

Driver's Air Mix Control Motor Test

Special Tools Required

- Backprobe Set 07SAZ-001000A (2)

NOTE: Before testing the motor, check for HVAC DTCs Initial Inspection and Diagnostic Overview.

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

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


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

3. If the driver's air mix control motor did not run in step 2, remove it, then check the driver's air mix control linkage and the door for smooth movement.

- If the linkage and door move smoothly, replace the driver's air mix control motor Driver's Air Mix Control Motor Replacement.
- If the linkage or door sticks or binds, repair them as needed.
- If the driver's 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 and 7.8 kOhms.





5. Reconnect the driver's 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 driver's air mix control motor Driver's Air Mix Control Motor Replacement.