Kia Sedona (2008 year). Instruction — part 239

Fig. 85: Diagnosis Function Screen Display - Evaporative Sensor
Courtesy of KIA MOTORS AMERICA, INC.

4. Are the DTC B1242 present and is parameter of "EVAPORATIVE SENSOR" fixed?

Parameter of "EVAPORATIVE SENSOR" will be fixed at -2° (28.4°F), if there is any fault in
EVAPORATIVE SENSOR.

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 B1241.

SIGNAL CIRCUIT INSPECTION

1. Check for open in harness.

1. Ignition "OFF"

2. Disconnect evaporator temp, sensor.

3. Measure resistance between terminal "1" of evaporator temp, sensor and terminal "11" of A/C

Control Unit.

2008 Kia Sedona EX

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

Microsoft

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Specification: Approx. 0 ohms

Fig. 86: Checking Resistance Between Terminal "1" Of Evaporator Temp, Sensor And
Terminal "11" Of A/C Control Unit
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured resistance within specifications?

YES

Go to "GROUND CIRCUIT INSPECTION" procedure.

NO

Check for open in 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 evaporator temp, sensor.

3. Measure resistance between terminal "1" of evaporator temp, sensor 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

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© 2006 Mitchell Repair Information Company, LLC.

Fig. 87: Checking Resistance Between Terminal "1" Of Evaporator Temp, 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 harness. Repair as necessary and go to "VERIFICATION OF VEHICLE
REPAIR" procedure.

COMPONENT INSPECTION

Refer to DTC B1241.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC B1241.

DTC B1245 AIR MIX 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

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Fig. 88: 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 B1245 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 81

© 2006 Mitchell Repair Information Company, LLC.