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

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© 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

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© 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.