Repair Procedures: Inspection
- Turn the ignition switch OFF.
- Disconnect the mode control actuator connector.
- Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 3 and grounding terminal 4.
Verify that the mode control actuator operates to the vent mode when connected in reverse.
Pin No Function 1 - 2 - 3 Vent mode 4 Sensor (+5V) 5 Feedback signal 6 Sensor ground 7 Defrost mode - Connect the mode control actuator connector.
- Turn the ignition switch ON.
- Check the voltage between terminal 6 and 5.
- If the measured voltage is not within specification, check the operation by replacing the existing mode control actuator with a new genuine part.
After that, determine whether replacement of the temperature control actuator is required or not.