Kia Sedona (2008 year). Manual - part 227

Refer to DTC B1204. 

DTC B1206 DIRECTION POTENTIOMETER OPEN (LOW) - PASSENGER 

COMPONENT LOCATION 

Fig. 34: Identifying Temp Control Actuator Component Location 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

The mode control actuator mounted on heater unit, adjusts position of mode door by operating Direction Motor 
based on signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order 
of vent--> B/L --> floor --> mix. 

DTC DESCRIPTION 

The A/C controller sets DTC B1249 if there is an open circuit or poor connection in the Direction 
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 direction 
potentiometer  

Threshold value



< 0.1V  

Detecting time



0.3 sec  

FAIL SAFE



Fix vent position, while 
selecting vent mode.  



Fix defrost position while 
selecting except vent mode. 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 30 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 35: 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 "DR. DIRECTION POTENTIO." parameter on the scan tool while operating mode switch. 

Fig. 36: Diagnosis Function Screen Display - Direction Potentiometer 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Are the DTC B1249 present and is parameter of "DR. DIRECTION POTENTIO." fixed? 

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

YES  

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 31 

© 2006 Mitchell Repair Information Company, LLC. 

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 

1. Many malfunctions in the electrical system are caused by poor harness and terminals. 

Faults can also be caused by interference from other electrical systems, and mechanical or chemical 
damage. 

2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, 

deterioration, or damage.  

3. Has a problem been found? 

YES  

Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR" procedure. 

NO  

Go to "SIGNAL CIRCUIT INSPECTION" procedure. 

SIGNAL CIRCUIT INSPECTION 

1. Check for open in harness. 

1. Ignition "OFF"  

2. Disconnect Driver mode Actuator.  

3. Measure resistance between terminal "6" of Driver Direction potentiometer and terminal "17" of 

A/C control unit. 

Specification: Approx. 0 ohms 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 32 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 37: Checking Resistance Between Terminals Of Driver Direction Potentiometer 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  

Go to step 2. 

NO  

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

2. Check for short to ground in harness. 

1. Ignition "ON"  

2. Disconnect Driver mode Actuator.  

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

Specification: Approx. infinity ohms 

Fig. 38: Checking Resistance Between Terminals Of Driver Direction Potentiometer And 
Chassis Ground 
Courtesy of KIA MOTORS AMERICA, INC.

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 33 

© 2006 Mitchell Repair Information Company, LLC.