Kia Sedona (2008 year). Instruction — part 261

Fig. 186: Checking Resistance Between Terminal "3, 4" Of Passenger Air Mix Motor And
Terminal "10, 13" 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 Passenger Air Mix Actuator.

3. Measure resistance between terminal "3, 4" of Passenger Air Mix Motor and chassis ground.

Specification: Approx. infinity ohms

Fig. 187: Checking Resistance Between Terminal "3, 4" Of Rear Air Mix Motor And Chassis
Ground

2008 Kia Sedona EX

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

Microsoft

Monday, May 24, 2010 3:56:09 PM

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Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured resistance within specifications?

YES

Go to "VISUAL/PHYSICAL INSPECTION" procedure.

NO

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

VISUAL/PHYSICAL INSPECTION

1. Check actuator.

Check if Passenger Air Mix Actuator works properly through ACTUATION TEST.

1. Ignition: ON

2. Connect scan tool and select "ACTUATION TEST" mode and press [F1]

Fig. 188: Diagnosis Function Screen Display - Actuation Test
Courtesy of KIA MOTORS AMERICA, INC.

3. Does Passenger Air Mix Actuator work properly?

YES

Go to "COMPONENT INSPECTION" procedure.

2008 Kia Sedona EX

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

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NO

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.

COMPONENT INSPECTION

1. Check actuator motor.

1. Ignition "OFF"

2. Disconnect Passenger Air Mix Potentiometer.

3. Verify that the temperature actuator operates to the hot position when connecting 12V to the

terminal "3" and grounding terminal "4".

4. Verify that the temperature actuator operates to the cool position when the connections are

reversed.

Fig. 189: Checking Terminal 3 And Grounding Terminal 4
Courtesy of KIA MOTORS AMERICA, INC.

5. Does the actuator work properly?

YES

Go to step 2.

NO

Substitute with a known-good actuator and check for proper operation. If the problem is corrected,
replace actuator and then go to "VERIFICATION OF VEHICLE REPAIR" procedure.

2. Check potentiometer

1. Ignition "ON"

2. Connect Passenger Air Mix potentiometer.

3. Measure voltage between terminal "5" and "6" of Passenger Air Mix potentiometer while operating

the temp, switch.

2008 Kia Sedona EX

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

Microsoft

Monday, May 24, 2010 3:56:09 PM

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Specification: Refer to DOOR POSITION CHART

Fig. 190: Checking Voltage Between Terminal "5" And "6" Of Passenger Air Mix
Potentiometer
Courtesy of KIA MOTORS AMERICA, INC.

DOOR POSITION CHART

Fig. 191: Air Mix Graph
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured voltage within specifications in DOOR POSITION CHART?

YES

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.

Door position

Voltage (5-6)

Error detecting

MAX. Cooling

0.3 ± 0.15V

Low voltage: 0.08V

or less

MAX. Heating

4.7 ± 0.15V

High voltage: 4.9V

or more

2008 Kia Sedona EX

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

Microsoft

Monday, May 24, 2010 3:56:09 PM

Page 169

© 2006 Mitchell Repair Information Company, LLC.