Kia Sedona (2008 year). Manual - part 242

any value below 10%), if there is any fault in Driver Air Mix potentiometer.

YES

Go to TERMINAL AND CONNECTOR INSPECTION procedure.

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.

Go to "SIGNAL CIRCUIT INSPECTION" procedure.

SIGNAL CIRCUIT INSPECTION

1. Check for short in harness.

1. Ignition "OFF"

2. Disconnect Driver Air Mix potentiometer.

3. Measure resistance between terminal "5" and "6" of Driver Air Mix potentiometer.

Specification: Approx. infinity ohms

2008 Kia Sedona EX

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

Microsoft

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

Page 90

Fig. 99: Checking Resistance Between Terminal "5" And "6" Of Driver Air Mix
Potentiometer
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured resistance within specifications?

YES

Go to "GROUND CIRCUIT INSPECTION" procedure.

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 Driver Air Mix Potentiometer.

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

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 91

Fig. 100: Checking Resistance Between Terminal "7" Of Driver 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.

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

COMPONENT INSPECTION

Refer to DTC B1245.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC B1245.

DTC B1249 DIRECTION POTENTIOMETER OPEN (LOW) - DRIVER

COMPONENT LOCATION

2008 Kia Sedona EX

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

Microsoft

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

Page 92

Fig. 101: Identifying Mode Control Actuator (Driver'S) 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 3:56:08 PM

Page 93

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