Kia Sedona (2008 year). Manual - 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 

 

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

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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

Page 79 

© 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

Page 80 

© 2006 Mitchell Repair Information Company, LLC. 

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.