Air Mix Control Motor Test

Special Tools Required 

Backprobe Set 07SAZ-001000A (2) 

1. Disconnect the 7P connector from the air mix control motor.
   NOTE: 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 smoothly, and stop at Max Hot. If it doesn't, reverse the connections; the air mix control motor should run smoothly, and stop at Max Cool.
   Fig 1: Identifying Air Mix Control Motor Connector Terminal

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
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 kΩ.
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.

   Max Cool: Max Hot: 

   About 1V About 4 V 

7. If either the resistance or the voltage readings are not as specified, replace the air mix control motor.