Air Mix Control Motor Replacement

Remove the passenger's dashboard undercover (see PASSENGER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION ) and the glove box (see GLOVE BOX REMOVAL/INSTALLATION ).
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.

Fig 1: Identifying Air Mix Control Motor And 7P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
With the motor removed, make sure the door linkage moves smoothly and does not bind.
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.