Kia Sedona (2008 year). Manual - part 231

Check for short or open in power harness. Repair as necessary and go to "VERIFICATION OF 
VEHICLE REPAIR" procedure. 

COMPONENT INSPECTION 

1. Check actuator motor. 

1. Ignition "OFF"  

2. Disconnect Intake Potentiometer.  

3. Verify that the temperature actuator operates to the fresh position when connecting 12V to the 

terminal "3" and grounding terminal "4".  

4. Verify that the temperature actuator operates to the recirculation position when the connections are 

reversed. 

Fig. 52: Checking Terminal 3 And Grounding Terminal 4 
Courtesy of KIA MOTORS AMERICA, INC. 

5. Does the actuator work properly? 

YES  

Go to step 2. 

NO  

Substitute with a known-good actuator and check for proper operation. If the problem is corrected, 
replace actuator and then go to "VERIFICATION OF VEHICLE REPAIR" procedure. 

2. Check potentiometer 

1. Ignition "ON"  

2. Connect Intake potentiometer.  

3. Measure voltage between terminal "5" and "6" of Intake potentiometer while operating Intake 

switch. 

Specification: Refer to the SPECIFICATIONS

 

2008 Kia Sedona EX 

2008 HVAC Blower & A/C Controls (Automatic) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 46 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 53: Checking Voltage Between Terminal "5" And "6" Of Intake Potentiometer 
Courtesy of KIA MOTORS AMERICA, INC. 

DOOR POSITION CHART 

Specifications: Voltage value of Intake potentiometer as a function of position of Intake. 

4. Is the measured voltage within specifications? 

YES  

Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, 
or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE 
REPAIR" procedure. 

NO  

Substitute with a known-good actuator and check for proper operation. If the problem is corrected, 
replace actuator and then go to "VERIFICATION OF VEHICLE REPAIR" procedure. 

VERIFICATION OF VEHICLE REPAIR 

After a repair, it is essential to verify that the fault has been corrected. 

1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.  

2. Operate the vehicle and monitor the DTC on the scan tool.  

3. Are any DTCs present? 

YES  

Go to the applicable troubleshooting procedure.

Door position

Voltage (5-6)

Error detecting

Fresh

0.3 ± 0.15V

Low voltage: 0.08V 

or less

Recirculation

4.7 ± 0.15V

High voltage: 4.9V 

or more

 

2008 Kia Sedona EX 

2008 HVAC Blower & A/C Controls (Automatic) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 47 

© 2006 Mitchell Repair Information Company, LLC. 

NO  

System is performing to specification at this time. 

DTC B1209 INTAKE POTENTIOMETER SHORT 

COMPONENT LOCATION 

Fig. 54: Identifying Intake Actuator Component Location 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

Refer to DTC B1208. 

DTC DESCRIPTION 

The A/C controller sets DTC B1209 if there is a short to power in the Intake potentiometer. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

SPECIFICATION 

Refer to DTC B1208. 

Item

Detecting Condition

Possible cause

DTC Strategy



Voltage check  



Short circuit in harness  



Faulty Intake potentiometer 



Open circuit in harness  

Threshold value



> 4.9V  

Detecting time



0.3 sec  

FAIL SAFE



Fix at fresh  

 

2008 Kia Sedona EX 

2008 HVAC Blower & A/C Controls (Automatic) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 48 

© 2006 Mitchell Repair Information Company, LLC. 

MONITOR SCAN TOOL DATA 

1. Connect scan tool to Data Link Connector (DLC).  

2. Engine "ON"  

3. Monitor the "Intake Potentiometer" Parameter on the scan tool while operating intake switch. 

Fig. 55: Diagnosis Function Screen Display - Intake Sensor 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Are the DTC B1209 present and is parameter of "Intake potentiometer" fixed? 

Parameter of "Intake potentiometer" will be fixed at 100% (or any value above 90%), or 0% (or any value 
below 10%), if there is any fault in Intake potentiometer. 

YES  

Go to TERMINAL AND CONNECTOR INSPECTION procedure. 

NO  

Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was 
repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor 
connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary 
and then go to "VERIFICATION OF VEHICLE REPAIR" procedure. 

TERMINAL AND CONNECTOR INSPECTION 

Refer to DTC B1208. 

SIGNAL CIRCUIT INSPECTION 

 

2008 Kia Sedona EX 

2008 HVAC Blower & A/C Controls (Automatic) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 49 

© 2006 Mitchell Repair Information Company, LLC.