Honda Accord: Air Mix Control Motor Test - Heating/Air Conditioning - Heating, Ventilation, and Air Conditioning - Honda Accord MK8 2008-2012 Service ManualHonda Accord: Air Mix Control Motor Test

NOTE: Before testing the motor, check for HVAC DTCs (see page 21-9).

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

Incorrectly applying power and ground to the air mix


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.

AIR MIX CONTROL MOTOR

3. If the air mix control motor did not run in step 2,


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 (see page 21-60).

• 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 kO.

5. Reconnect the 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 of the 7P connector.

Max Cool; About 0.5 V

Max Hot; About 4.5 V

7. If either the resistance or the voltage readings are not as specified, replace the air mix control motor (see page 21-60).

    Power Transistor Test
    1. Remove the passenger's dashboard undercover (see page 20-170). 2. Disconnect the 4P connector from the power transistor. 3. Measure the resistance between terminals No. 3 and No. 4 of the ...

    Air Mix Control Motor Replacement
    1. Remove the driver's dashboard undercover (see page 20-170). 2. Disconnect the 7P connector (A) from the air mix control motor (B). Remove the self-tapping screws and the air mix control motor ...

    See also:

    Crankshaft Main Bearing Replacement
    Main Bearing Clearance Inspection 1. To check the main bearing-to-journal oil clearance, remove the lower block and the bearing halves (see page 7-14). 2. Clean each main journal and the bearing ...

    Carrier Bearing Replacement
    Special Tools Required Attachment, 40 x 50 mm 07LAD-PW50601 NOTE: -The bearing and the bearing outer race should be replaced as a set. -Inspect and adjust the carrier bearing preload wheneve ...

    Compass
    EX-L and all V6 without navigation system ...