Temperature Control Actuator

Inspection

1. Ignition "OFF"
2. Disconnect the connector of temperature control actuator.
3. Verify that the temperature control actuator operates to the hot position when connecting 12V to the terminal 3 and grounding terminal 4.
Verify that the temperature control actuator operates to the cool position when connecting in the reverse.




4. With the connector connected to the actuator, check the voltage between terminals 5 and 6 while the temperature door is in both the hot and cold positions.

Specification





* This potentiometer is a feedback sensor used by the control unit to track the position of the actuator door.
5. If the measured voltage is not specification, substitute with a known-good temperature control actuator and check for proper operation.
6. If the problem is corrected, replace the temperature control actuator.