Kia Sedona (2008 year). Instruction — part 93

Fig. 22: Scan Tool Display - Oil Temperature
Courtesy of KIA MOTORS AMERICA, INC.

4. Does "TRANSAXLE FLUID TEMPERATURE SENSOR" follow the reference data?

YES



Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was
repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness,
poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as
necessary and go to "VERIFICATION OF VEHICLE REPAIR" procedure.

NO



Go to "TERMINAL & CONNECTOR INSPECTION" procedure.

TERMINAL & CONNECTOR INSPECTION

1. Many malfunctions in the electrical system are caused by poor harness and terminal condition. 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,

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

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© 2006 Mitchell Repair Information Company, LLC.

deterioration, or damage.

3. Has a problem been found?

YES



Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR" procedure.

NO



Go to "COMPONENT INSPECTION" procedure.

SIGNAL CIRCUIT INSPECTION

1. Ignition "ON" & Engine "OFF".

2. Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.

3. Measure the voltage between terminal "1" of the "TRANSAXLE FLUID TEMPERATURE SENSOR"

harness connector and chassis ground.

Specification: Approx. 5 V

Fig. 23: Measuring Voltage Between Terminal Harness Connector And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

4. Is voltage 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 "TRANSAXLE FLUID TEMPERATURE SENSOR"

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

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© 2006 Mitchell Repair Information Company, LLC.

1. Ignition "OFF".

2. Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.

3. Measure the resistance between terminals "1" and "2" of the "TRANSAXLE FLUID

TEMPERATURE SENSOR".

Specification: Refer to RESISTANCE SPECIFICATION CHART

Fig. 24: Measuring Resistance Between Terminals "Transaxle Fluid Temperature Sensor"
Courtesy of KIA MOTORS AMERICA, INC.

RESISTANCE SPECIFICATION CHART

4. Is resistance within specifications?

YES



Go to 2.

NO



Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to
"VERIFICATION OF VEHICLE REPAIR" procedure.

2. CHECK PCM

1. Ignition "ON" & Engine "OFF".

2. Connect "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.

3. Install scan tool and select a SIMU-SCAN.

4. Simulate voltage (0-->5V) to "TRANSAXLE FLUID TEMPERATURE SENSOR" signal circuit.

TEMP. [°C (°F)]

Resistance (kohms)

TEMP. [°C (°F)]

Resistance (kohms)

-40 (-40)

139.5

80 (176)

1.08

-20 (-4)

47.7

100 (212)

0.63

0 (32)

18.6

120 (248)

0.38

20 (68)

8.1

140 (284)

0.25

40 (104)

3.8

160 (320)

0.16

60 (140)

1.98

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

Page 33

© 2006 Mitchell Repair Information Company, LLC.

Fig. 25: Scan Tool Display - Oil Temperature
Courtesy of KIA MOTORS AMERICA, INC.

5. Is FLUID TEMP. SENSOR signal value changed according to simulation voltage?

YES



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.

NO



Substitute with a known-good PCM/TCM and check for proper operation. If the problem is
corrected, replace PCM/TCM as necessary 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.

2. Using a scan tool, Clear DTC.

3. Operate the vehicle within DTC Enable conditions in General information.

4. Are any DTCs present?

YES



Go to the applicable troubleshooting procedure.

NO

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

Page 34

© 2006 Mitchell Repair Information Company, LLC.