Kia Sedona (2008 year). Instruction — 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

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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

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© 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

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© 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.