Kia Niro: Heater / Mode Control Actuator Repair procedures

Inspection
1.

Switch "OFF" the ignition.

2.

Disconnect the mode control actuator connector.

3.

Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 3 and grounding terminal 7.

Verify that the mode control actuator operates to the vent mode when connected in reverse.

Mode control actuator [LH]

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

Mode control actuator [RH]

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

4.

Connect the mode control actuator connector.

5.

Switch "ON" the ignition.

6.

Check the voltage between terminals 4 and 5.

Specification

Door position
Voltage (V)
Error detecti
Vent
0.3 ± 0.15
Low voltage : 0.1V or less
Defrost
4.7 ± 0.15
High voltage : 4.9V or more

It will feedback the current position of the 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.

Replacement

[Driver side]

1.

Disconnect the negative (-) battery terminal.

2.

Remove the main crash pad assembly.

(Refer to Body - "Main Crash Pad Assembly".)

3.

Remove the driver side shower duct (A) after loosening the screw.

4.

Install in the reverse order of removal.

[Passenger side]

1.

Disconnect the negative (-) battery terminal.

2.

Remove the main crash pad assembly.

(Refer to Body - "Main Crash Pad Assembly")

3.

Disconnect the connector and then remove the mode control actuator (A) after loosening the mounting screws.

4.

Install in the reverse order of removal.

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