Kia Rio: Mode Control Actuator Inspection - Heater - Heating,Ventilation, Air Conditioning - Kia Rio UB 2012-2020 Service ManualKia Rio: Mode Control Actuator 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 terminal 4 and grounding terminal 3.
Verify that the mode control actuator operates to the vent mode when connecting in the reverse.


1. -
2. -
3. Vent mode
4. Defog mode
5. Sensor (+ 5V)
6. Feedback signal
7. Sensor ground

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
Door position
Voltage (V)
Error detecting
Vent
0.9 0.3
Low voltage: 0.1V or less
Bi-Level
0.9 0.3
 
Floor
4.1 0.3
 
Mix
4.1 0.3
 
Defog
4.1 0.3
High voltage: 4.9V or more

With auto defogging deactivated
Door position
Voltage (V)
Error detecting
Vent
2.5 0.3
Low voltage: 0.1V or less
Bi-Level
2.5 0.3
 
Floor
4.1 0.3
 
Mix
4.1 0.3
 
Defog
4.1 0.3
High voltage: 4.9V or more

It will feedback current position of actuator to controls.
7.
If the measured voltage is not within specification, substitute with a known-good mode control actuator and check for proper operation.
8.
Replace the mode control actuator if it is proved that there is a problem with it.
Mode Control Actuator Description
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Mode Control Actuator Replacement
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