Front Mode Control Motor Test
Front Mode Control Motor Test1. Disconnect the 7P connector from the front mode control motor.
NOTICE: Incorrectly applying power and ground to the front mode control motor will damage it. Follow the instructions carefully.
2. Connect battery power to the No. 1 terminal of the front mode control motor, and ground the No. 2 terminal; the front mode control motor should run smoothly, and stop at Defrost. If it doesn't, reverse the connections; the front mode control motor should run smoothly, and stop at Vent. When the front mode control motor stops running, disconnect battery power immediately.
3. If the front mode control motor does not run in step 2, remove it, then check the front mode control linkage and doors for smooth movement.
- If the linkage and doors move smoothly, replace the front mode control motor.
- If the linkage or doors stick or bind, repair them as needed.
- If the front 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 front mode control motor running as in step 2, check for continuity between the No. 3, 4, 5, and 6 terminals and the No. 7 terminal individually. There should be continuity for a moment as the motor moves past each switch terminal.
5. If there is no continuity for a moment at each terminal, replace the front mode control motor.