Kia Sedona (2008 year). Manual - part 230

SPECIFICATION 

Voltage value of Intake potentiometer as a function of position of Intake door 

DOOR POSITION CHART 

MONITOR SCAN TOOL DATA 

1. Connect scan tool to Data Link Connector (DLC).  

2. Engine "ON"  

3. Monitor the "Intake Potentiometer" Parameter on the scan tool while operating intake switch. 

Fig. 48: Diagnosis Function Screen Display - Intake Sensor 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Are the DTC B1208 present and is parameter of "Intake Potentiometer" fixed? 

Parameter of "Intake Potentiometer" will be fixed at 100% (or any value above 90%), or 0% (or any value 
below 10%), if there is any fault in Intake potentiometer. 

YES  

Go to TERMINAL AND CONNECTOR INSPECTION procedure.



Fix at fresh  

Door position

Voltage

Threshold value

Fresh

0.3±0.15V

Voltage value &< 0.08V

Recirculation

4.7±0.15V

Voltage value &> 4.9V

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 42 

© 2006 Mitchell Repair Information Company, LLC. 

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 Intake potentiometer.  

3. Measure resistance between terminal "6" of Intake Potentiometer and terminal "9" 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 3:56:07 PM

Page 43 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 49: Checking Resistance Between Terminal "6" Of Intake Potentiometer And Terminal 
"9" Of A/C Control Unit 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  

Go to step 2. 

NO  

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

2. Check for short to ground in harness. 

1. Ignition "OFF"  

2. Disconnect Intake potentiometer.  

3. Measure resistance between terminal "6" of Intake Potentiometer and chassis ground. 

Specification: Approx. infinity ohms 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 44 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 50: Checking Resistance Between Terminal "6" Of Intake Potentiometer And Chassis 
Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  

Go to "POWER CIRCUIT INSPECTION" procedure. 

NO  

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

POWER SUPPLY CIRCUIT INSPECTION 

1. Check for short or short in harness. 

1. Ignition "ON"  

2. Connect Intake Potentiometer.  

3. Measure voltage between terminal "7" of Intake Potentiometer and chassis ground. 

Specification: Approx. 5 V 

Fig. 51: Checking Voltage Between Terminal "7" Of Intake Potentiometer And Chassis 
Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured voltage within specifications?  

YES  

Go to "COMPONENT INSPECTION" procedure. 

NO  

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:07 PM

Page 45 

© 2006 Mitchell Repair Information Company, LLC.