Kia Sedona (2008 year). Manual - part 235

MONITOR SCAN TOOL DATA 

1. Connect scan tool to data link connector (DLC).  

2. Engine "ON"  

3. Monitor the "AMBIENT TEMP. SENSOR" Parameter on the scan tool. 

Parameter of "AMBIENT TEMP. SENSOR" will be fixed at 20°C, if there is any fault in AMBIENT 
TEMP. SENSOR. 

Fig. 69: Diagnosis Function Screen Display - Ambient Temp. Sensor 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Are the DTC B1237 present and is parameter of "AMBIENT TEMP. SENSOR" fixed? 

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.

-30 (-22)

527.99

25 (77)

30

-15 (5)

218.21

35 (95)

19.6

0 (32)

97.83

50 (122)

10.82

15 (59)

47.12

60 (140)

7.48

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 62 

© 2006 Mitchell Repair Information Company, LLC. 

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 short to ground in harness. 

1. Ignition "OFF"  

2. Disconnect ambient temp, sensor.  

3. Measure resistance between terminal "1" of ambient temp, sensor and chassis ground. 

Specification: Approx. infinity ohms 

Fig. 70: Checking Resistance Between Terminal "1" Of Ambient Temp, Sensor And Chassis 
Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 63 

© 2006 Mitchell Repair Information Company, LLC. 

YES  

Go to "COMPONENT INSPECTION" procedure. 

NO  

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

COMPONENT INSPECTION 

1. Check Ambient temp, sensor. 

1. Ignition "OFF"  

2. Disconnect ambient temp, sensor.  

3. Measure resistance between terminal "1" and "2" of ambient temp, sensor. 

Specification: Refer the specifications in Fig. 72. 

Fig. 71: Checking Resistance Between Terminal "1" And "2" Of Ambient Temp, Sensor 
Courtesy of KIA MOTORS AMERICA, INC.

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 64 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 72: Resistance And Temperature Graph 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications in Fig. 72? (tolerance limits ±3%) 

YES  

Go to step 2. 

NO  

Substitute with a known-good ambient temp, sensor and check for proper operation. 

If the problem is corrected, replace ambient temp, sensor and then go to "VERIFICATION OF 
VEHICLE REPAIR" procedure. 

2. Check A/C Control Unit 

1. Engine "ON"  

2. Disconnect ambient temp, sensor.  

3. Measure voltage between terminal "4" of A/C Control Unit and chassis ground. 

Specification: Approx. 5V  

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 3:56:08 PM

Page 65 

© 2006 Mitchell Repair Information Company, LLC.