Kia Sedona (2008 year). Instruction — part 238
Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured resistance within specifications?
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 evaporator temp, sensor.
1. Ignition "OFF"
2. Disconnect evaporator temp, sensor.
3. Measure resistance between terminal "1" and "2" of evaporator temp, sensor.
Specification: Refer the specifications in Fig. 82.
Fig. 81: Checking Resistance Between Terminal "1" And "2" Of Evaporator 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
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© 2006 Mitchell Repair Information Company, LLC.
Fig. 82: Resistance And Temperature Graph
Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured resistance within specifications in Fig. 82? (tolerance limits ±3%)
YES
Go to step 2.
NO
Substitute with a known-good evaporator temp, sensor and check for proper operation.
If the problem is corrected, replace evaporator temp, sensor and then go to "VERIFICATION OF
VEHICLE REPAIR" procedure.
2. Check A/C Control Unit
1. Engine "ON"
2. Disconnect evaporator temp, sensor.
3. Measure voltage between terminal "11" 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
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© 2006 Mitchell Repair Information Company, LLC.
Fig. 83: Checking Voltage Between Terminal "11" Of A/C Control Unit And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured voltage within specifications?
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.
NO
Substitute with a known-good A/C Control Unit and check for proper operation.
If the problem is corrected, replace A/C Control Unit and then go to "VERIFICATION OF
VEHICLE REPAIR" procedure.
VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scan tool.
3. Are any DTCs present?
YES
Go to the applicable troubleshooting procedure.
NO
System is performing to specification at this time.
DTC B1242 EVAPORATOR TEMPERATURE SENSOR OPEN (HIGH)
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.
COMPONENT LOCATION
Fig. 84: Identifying Evaporator Temperature Sensor Component Location
Courtesy of KIA MOTORS AMERICA, INC.
GENERAL DESCRIPTION
Refer to DTC B1241.
DTC DESCRIPTION
The A/C controller sets DTC B1242 if there is an open circuit in evaporator temp, sensor signal harness or the
measured resistance value of sensor is more than threshold value (about 13.6kohms)
DTC DETECTING CONDITION
DTC DETECTING CONDITION CHART
SPECIFICATION
Refer to DTC B1241.
MONITOR SCAN TOOL DATA
1. Connect scan tool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "EVAPORATIVE SENSOR" Parameter on the scan tool.
Item
Detecting Condition
Possible cause
DTC Strategy
Resistance check
Open Circuit in harness
Faulty Evaporator temp. Sensor
Faulty A/C control unit
Threshold value
> 13.6kohms
Detecting time
0.3 sec
FAIL SAFE
Control with the value of -2°C (28.4°F)
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.
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