Driver's Mode Control Motor Test

Driver's Mode Control Motor Test

NOTE: Before testing, check for HVAC DTCs.

1. Disconnect the 10P connector from the driver's mode control motor.

NOTICE: Incorrectly applying power and ground to the driver's mode control motor will damage it. Follow the instructions carefully.

2. Connect battery power to the No. 2 terminal of the driver's mode control motor, and ground the No. 1 terminal; the driver's mode control motor should run smoothly, and stop at Vent. If it doesn't, reverse the connections; the driver's mode control motor should run smoothly, and stop at Defrost. When the driver's mode control motor stops running, disconnect battery power immediately.






3. If the driver's mode control motor did not run in step 2, remove it, then check the driver's mode control linkage and doors for smooth movement.

- If the linkage and doors move smoothly, replace the driver's mode control motor.
- If the linkage or doors stick or bind, repair them as needed.
- If the driver's mode control motor runs smoothly, go to step 4.

4. Use a digital multimeter with an output of 1 mA or less at the 20 kohms range. With the driver's mode control motor running as in step 2, check for continuity between the No. 6, 7, 8, and 9 terminals and the No. 10 terminal individually. There should be continuity for a moment at each terminal as the motor moves past the switch's terminal.
5. If there is no continuity for a moment at each terminal, replace the driver's mode control motor.