Kia Sedona (2008 year). Instruction — part 249

Fig. 130: Checking Resistance Between Terminal "6" Of Rear Direction Potentiometer And
Terminal "10" 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 Rear mode Actuator.

3. Measure resistance between terminal "6" of Rear Direction potentiometer and chassis ground.

Specification: Approx. infinity ohms

Fig. 131: Checking Resistance Between Terminal "6" Of Driver Direction Potentiometer And
Chassis Ground

2008 Kia Sedona EX

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

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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 open in harness.

1. Ignition "ON"

2. Connect Rear Direction potentiometer.

3. Measure voltage between terminal "7" of Rear Direction potentiometer and chassis ground.

Specification: Approx. 5V

Fig. 132: Checking Voltage Between Terminal "7" Of Driver Direction Potentiometer And
Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured voltage within specifications?

YES

Go to "COMPONENT INSPECTION" procedure.

NO

Check for short or open in power harness. Repair as necessary and go to "VERIFICATION OF

2008 Kia Sedona EX

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

Microsoft

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VEHICLE REPAIR" procedure.

COMPONENT INSPECTION

1. Check actuator.

1. Ignition "OFF"

2. Disconnect Rear Direction potentiometer.

3. Verify that the mode actuator operates to the vent mode when connecting 12V to the terminal "3"

and grounding terminal "4"

4. Verify that the mode actuator operates to the def mode when the connections are reversed.

Fig. 133: 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 Rear Direction potentiometer.

3. Measure voltage between terminal "5" and "6" of Rear Direction potentiometer as the mode switch

is operated.

Specification: Refer the specifications in DOOR POSITION CHART

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. 134: Checking Voltage Between Terminal "5" And "6" Of Intake Potentiometer
Courtesy of KIA MOTORS AMERICA, INC.

DOOR POSITION CHART

Fig. 135: Output Voltage 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

VENT

0.3 ± 0.15V

Under voltage:

0.08V or less

Over voltage: 4.92V

or more

BI-LEVEL(1)

1.35 ± 0.4V

BI-LEVEL(2)

2.25 ± 0.4V

FLOOR

3.0 ± 0.4V

MIX

3.6 ± 0.4V

DEF

4.7 ± 0.15V

2008 Kia Sedona EX

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

Microsoft

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© 2006 Mitchell Repair Information Company, LLC.