Kia Sedona (2008 year). Manual - part 248

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 Rear Air Mix Potentiometer.  

3. Measure resistance between terminal "7" of Rear Air Mix Potentiometer and chassis ground. 

Specification: Approx. 0 ohms 

Fig. 126: Checking Resistance Between Terminal "7" Of Rear 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 B1260. 

VERIFICATION OF VEHICLE REPAIR 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 114 

© 2006 Mitchell Repair Information Company, LLC. 

Refer to DTC B1260. 

DTC B1262 DIRECTION POTENTIOMETER OPEN (LOW) - REAR 

COMPONENT LOCATION 

Fig. 127: Identifying Mode 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 B1262 if there is an open circuit or poor connection in the Direction 
potentiometer. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

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 3:56:08 PM

Page 115 

© 2006 Mitchell Repair Information Company, LLC. 

SPECIFICATION 

Fig. 128: 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 "DIRECTION POTENTIO." parameter on the scan tool while operating mode switch. 

Fig. 129: Diagnosis Function Screen Display - Direction Potentiometer Rear 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Are the DTC B1262 present and is parameter of "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. 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

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

Page 116 

© 2006 Mitchell Repair Information Company, LLC. 

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 

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 Rear mode Actuator.  

3. Measure resistance between terminal "6" of Rear Direction potentiometer and terminal "10" 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 3:56:08 PM

Page 117 

© 2006 Mitchell Repair Information Company, LLC.