Recirculation Control Motor Test
NOTE:
Before testing the motor, check for climate control DTCs (see HOW TO CHECK FOR DTCS WITH THE HDS
).
- Disconnect the 7P connector from the recirculation control motor.NOTE: Incorrectly applying power and ground to the recirculation control motor will damage it. Follow the instructions carefully.
- Connect battery power to terminal No. 1 of the recirculation control motor, and ground terminal No. 2; the recirculation control motor should run smoothly, and stop at Recirculate. If it does not, reverse the connections; the recirculation control motor should run smoothly, and stop at Fresh. When the recirculation control motor stops running, disconnect battery power immediately.
- If the recirculation control motor did not run in step 2, remove it, then check the recirculation control linkage and door for smooth movement.
- If the linkage and door move smoothly, replace the recirculation control motor (see RECIRCULATION CONTROL MOTOR REPLACEMENT ).
- If the linkage or door stick or bind, repair them as needed.
- If the recirculation control motor runs smoothly, go to step 4.
- Use a digital multimeter with an output of 1 mA or less at the 20 kΩ range. Operate the recirculation control motor running as in step 2, and check for continuity between terminals No. 3, No. 4, and No. 5 and terminal No. 1 individually. There should be continuity for a moment at each terminal as the motor through its travel.
- If there is no continuity for a moment at each terminal, replace the recirculation control motor (see RECIRCULATION CONTROL MOTOR REPLACEMENT ).