Kia Rio: Heater / Mode Control Actuator
Description and operation
| Description |
The mode control actuator is located at the heater unit.
It adjusts position of mode door by operating mode control actuator based on signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of Vent → Bi-Level → Floor → Mix.
Repair procedures
| Inspection |
| 1. |
Turn the ignition switch OFF. |
| 2. |
Disconnect the mode control actuator connector. |
| 3. |
Verify that the mode control actuator operates to the defog mode when connecting 12V to the terminal 4 and grounding terminal 3. Verify that the mode control actuator operates to the vent mode when connecting in the reverse.
|
| 4. |
Connect the mode control actuator connector. |
| 5. |
Turn the ignition switch ON. |
| 6. |
Check the voltage between terminal 6 and 7. Specification With auto defogging activated
With auto defogging deactivated
It will feedback current position of actuator to controls. |
| 7. |
If the measured voltage is not specification, substitute with a known-good mode control actuator and check for proper operation. |
| 8. |
If the problem is corrected, replace the mode control actuator. |
| Replacement |
| 1. |
Disconnect the negative (-) battery terminal. |
| 2. |
Remove the BCM unit. (Refer to Body Electrical System - "Body Control Module (BCM)") |
| 3. |
Disconnect the connector (A) and then remove the mode control actuator (B) after loosening the mounting screws.
|
| 4. |
Installation is the reverse order of removal. |
Temperature Control Actuator
Description and operation
Description
The heater unit includes mode control actuator and temperature control actuator.
The temperature control actuator is located at the heater unit. ...
PTC Heater
Description and operation
Description
The PTC (Positive Temperature Coefficient) heater is installed at the exit or
the backside of heater core.
The PTC heater is an electric heater ...
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