Kia Sedona (2008 year). Manual - part 436

Fig. 8: Identifying Rear Heater Unit 

11. Remove the rear temp actuator. Refer to TEMPERATURE CONTROL ACTUATOR .  

12. Remove the rear temp actuator lever (A). 

Fig. 9: Identifying Rear Temp Actuator Lever 

13. Remove the heater core.  

14. Installation is the reverse order of removal.  

REAR HEATER BLOWER UNIT 

INSPECTION 

1. Connect the battery voltage and check the blower motor rotation. 

 

2008 Kia Sedona EX 

2008 HVAC Rear Heater - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:03:45 PM

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© 2006 Mitchell Repair Information Company, LLC. 

Fig. 10: Checking Blower Motor 

2. If the blower motor voltage is not operated well, substitute with a known-good blower motor and check 

for proper operation.  

3. If the problem is corrected, replace the blower motor.  

REPLACEMENT 

1. Disconnect the negative (-) battery terminal.  

2. Disconnect the connector (A) of the blower motor.  

3. Remove the blower motor (B) after loosening the mounting screws. 

Fig. 11: Identifying Blower Motor And Connector 

4. Installation is the reverse order of removal.  

REAR TEMPERATURE CONTROL ACTUATOR 

DESCRIPTION 

 

2008 Kia Sedona EX 

2008 HVAC Rear Heater - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:03:45 PM

Page 7 

© 2006 Mitchell Repair Information Company, LLC. 

1. Heater unit includes mode control actuator and temperature control actuator.  

2. Temperature control actuator is located at the heater unit. It regulates the temperature by the procedure as 

follows. Signal from control unit adjusts position of temperature door by operating temperature switch 
and then temperature will be regulated by the hot/cold air ratio decided by position of temperature door.  

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. 

Fig. 12: Temperature Control Actuator Circuit 

4. Check the voltage between terminals 6 and 7. 

SPECIFICATION  

DOOR POSITION CHART 

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.  

REPLACEMENT 

Door position Voltage (6-7)

Error detecting

Max. cooling 0.3 ± 0.15V

Low voltage: 0.1V or less

Max. heating 4.7 ± 0.15V High voltage: 4.9V or more

* It will feedback current position of actuator to controls.

 

2008 Kia Sedona EX 

2008 HVAC Rear Heater - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:03:45 PM

Page 8 

© 2006 Mitchell Repair Information Company, LLC. 

1. Disconnect the negative (-) battery terminal.  

2. Remove the luggage side trim. Refer to LUGGAGE SIDE TRIM REPLACEMENT .  

3. Remove the rear heater unit. Refer to HEATER UNIT .  

4. Disconnect the temperature control actuator connector.  

5. Loosen the mounting screw and then remove the temperature control actuator (B). 

Fig. 13: Identifying Temperature Control Actuator 

6. Installation is the reverse order of removal.  

REAR MODE CONTROL ACTUATOR 

INSPECTION 

1. Ignition "OFF".  

2. Disconnect the connector of mode control actuator.  

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

and grounding terminal 4.  

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

 

2008 Kia Sedona EX 

2008 HVAC Rear Heater - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:03:45 PM

Page 9 

© 2006 Mitchell Repair Information Company, LLC.