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Air Mix Control Motor Test

  1. Disconnect the 5P 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 the No. 1 terminal of the air mix control motor, and ground the No. 5 terminal; 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.
  3. If the air mix control motor did not run in step  2, remove it, then check the air mix control linkage and doors for smooth movement.
    • If the linkage and doors move smoothly, replace the air mix control motor.
    • If the linkage or doors stick or bind, repair them as needed.
    • if the air mix control motor runs smoothly, go to step 4.
    Fig 1: Identifying Air Mix Control Motor Connectors
    G03682697Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Measure the resistance between the No. 2 and No. 3 terminals. It should be between 4.2 to 7.8 kΩ.
  5. Measure the resistance between the No. 2 and No. 4 terminals.

    Max Cool-0.58 to 1.09 k Ω 

    Max Hot-3.52 to 6.55 k Ω 

  6. If either of the resistance readings are not as specified, replace the air mix control motor.
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