Kia Sedona (2008 year). Instruction — part 222

4. Are the DTC B1200 present and is parameter of "Humidity Sensor" fixed?

Parameter of "Humidity Sensor" will be fixed at 10%, if there is any fault in Humidity 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

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 Humidity Sensor.

3. Measure resistance between terminal "3" of Humidity Sensor and terminal "6" 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 10

© 2006 Mitchell Repair Information Company, LLC.

Fig. 11: Checking Signal Circuit
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 Humidity Sensor.

3. Measure resistance between terminal "2" of Humidity Sensor and terminal "11" 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 11

© 2006 Mitchell Repair Information Company, LLC.

Fig. 12: Checking Ground Circuit
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured resistance within specifications?

YES

Go to "COMPONENT INSPECTION" procedure.

NO

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

COMPONENT INSPECTION

1. Check Humidity Sensor.

1. Engine "ON"

2. Connect Humidity Sensor.

3. Measure Frequency between terminal 2 of Humidity sensor and chassis ground.

Specification: Refer the specifications in Fig. 15.

Fig. 13: Checking Frequency Between Terminal 2 Of Humidity Sensor And Chassis Ground

2008 Kia Sedona EX

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

Microsoft

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

Page 12

© 2006 Mitchell Repair Information Company, LLC.

Courtesy of KIA MOTORS AMERICA, INC.

Fig. 14: Identifying Blinking Pattern
Courtesy of KIA MOTORS AMERICA, INC.

Fig. 15: Frequency Graph
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured frequency within specifications in Fig. 15? (tolerance limits ± 5%)

YES

Go to step 2.

NO

2008 Kia Sedona EX

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

Microsoft

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

Page 13

© 2006 Mitchell Repair Information Company, LLC.