Kia Sedona (2008 year). Manual - part 245

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 B1249. 

SIGNAL CIRCUIT INSPECTION 

1. Check for short in harness. 

1. Ignition "OFF"  

2. Disconnect Driver mode Actuator.  

3. Measure resistance between terminal "6" and "7" of Driver Direction potentiometer. 

Specification: Approx. infinity ohms 

Fig. 112: Checking Resistance Between Terminal "6" And "7" Of Driver Direction 
Potentiometer 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  

Go to "GROUND CIRCUIT INSPECTION" procedure. 

NO  

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 102 

© 2006 Mitchell Repair Information Company, LLC. 

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

GROUND CIRCUIT INSPECTION 

1. Check for open in ground harness. 

1. Ignition "OFF"  

2. Disconnect Driver mode Actuator.  

3. Measure resistance between terminal "3" of evaporator sensor and chassis ground. 

Specification :Approx. 0 ohms 

Fig. 113: Checking Resistance Between Terminal "3" Of Evaporator Sensor 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 B1249. 

VERIFICATION OF VEHICLE REPAIR 

Refer to DTC B1249. 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 103 

© 2006 Mitchell Repair Information Company, LLC. 

DTC B1260 AIR POTENTIOMETER OPEN (LOW) - REAR 

COMPONENT LOCATION 

Fig. 114: Identifying Temperature Control Actuator Component Location 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

Temperature control actuator located at heater unit, regulates the temperature by the procedure as follows. 
Signal from control unit adjusts position of temp, door by operating temp, motor and then temperature will be 
regulated by the hot/cold air ratio decided by position of temp. door. 

DTC DESCRIPTION 

The A/C controller sets DTC B1260 if there is an open circuit or poor connection in the air mix potentiometer. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

SPECIFICATION 

Item

Detecting Condition

Possible cause

DTC Strategy



Voltage check  



Poor connection of connected 
part  



Open circuit in harness  



Short circuit in harness  



Faulty driver Air Mix 
potentiometer  

Threshold value



< 0.1V  

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 3:56:08 PM

Page 104 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 115: Output Voltage Graph 
Courtesy of KIA MOTORS AMERICA, INC. 

MONITOR SCAN TOOL DATA 

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

2. Engine "ON"  

3. Monitor the "Rear Air Mix Potentiometer" Parameter on the scan tool while operating temp, switch. 

Fig. 116: Diagnosis Function Screen Display - Air Mix Potentiometer (Rear) 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Are the DTC B1260 present and is parameter of "Rear Air Mix Potentiometer" fixed? 

Parameter of "Rear 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 Rear Air Mix potentiometer. 

YES  

Go to TERMINAL AND CONNECTOR INSPECTION procedure.

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 105 

© 2006 Mitchell Repair Information Company, LLC.