Kia Sedona (2008 year). Manual - part 226

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. 

NO  

System is performing to specification at this time. 

DTC B1205 AIR MIX POTENTIOMETER SHORT (HIGH) - PASSENGER'S 

COMPONENT LOCATION 

Fig. 30: Identifying Temperature Control Actuator Component Location 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

Refer to DTC B1204. 

DTC DESCRIPTION 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

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© 2006 Mitchell Repair Information Company, LLC. 

The A/C controller sets DTC B1205 if there is a short to power in the air mix potentiometer. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

SPECIFICATION 

Refer to DTC B1204. 

MONITOR SCAN TOOL DATA 

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

2. Engine "ON"  

3. Monitor the "Passenger's Air Mix Potentiometer" Parameter on the scan tool while operating temp, 

switch. 

Fig. 31: Diagnosis Function Screen Display - Air Mix Potentiometer (PA) 

Item

Detecting Condition

Possible cause

DTC Strategy



Voltage check  



Short circuit in harness 



Faulty driver Air Mix 

potentiometer 

Threshold value



> 4.9V  

Detecting time



0.3 sec  

FAIL SAFE



If temperature setting 17-

24.5°C (63-76°F) fix at 

max. cooling position.  



If temperature setting 25-

32°C (77-90°F) fix at max. 

heating position.  

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

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© 2006 Mitchell Repair Information Company, LLC. 

Courtesy of KIA MOTORS AMERICA, INC.

4. Are the DTC B1205 present and is parameter of "Passenger's Air Mix potentiometer" fixed? 

Parameter of "Passenger's Air Mix potentiometer" will be fixed at 100% (or any value above 90%), or 0% 
(or any value below 10%), if there is any fault in Passenger's Air Mix 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 B1204. 

SIGNAL CIRCUIT INSPECTION 

1. Check for short in harness. 

1. Ignition "OFF"  

2. Disconnect Passenger's Air Mix potentiometer.  

3. Measure resistance between terminal "3" and "4" of Passenger's Air Mix potentiometer. 

Specification: Approx. infinity ohms 

Fig. 32: Checking Resistance Between Terminals Of Passenger Air Mix Potentiometer 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 28 

© 2006 Mitchell Repair Information Company, LLC. 

Go to "GROUND CIRCUIT INSPECTION" procedure.

NO  

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

GROUND CIRCUIT INSPECTION 

1. Check for open in harness. 

1. Ignition "OFF"  

2. Disconnect Passenger's Air Mix Potentiometer.  

3. Measure resistance between terminal "5" of Passenger's Air Mix Potentiometer and chassis ground. 

Specification: Approx. 0 ohms 

Fig. 33: Measuring Resistance Between Terminals Of Passenger Air Mix Potentiometer And 
Chassis Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  

Go to "COMPONENT INSPECTION" procedure. 

NO  

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

COMPONENT INSPECTION 

Refer to DTC B1204. 

VERIFICATION OF VEHICLE REPAIR 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 29 

© 2006 Mitchell Repair Information Company, LLC.