Component Inspection

WARNING: This page is about a different car, the 2007 Kia Optima, 2007 Kia Magentis, 2006 Kia Optima, and 2006 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK "TRANSAXLE FLUID TEMPERATURE SENSOR"

Ignition "OFF".
Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.

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

Specification: Refer to RESISTANCE SPECIFICATION CHART

Fig 1: Measuring Resistance Between Terminals 1 And 2 Of Transaxle Fluid Temperature Sensor

Courtesy of KIA MOTORS AMERICA, INC.

[REFERENCE DATA]

RESISTANCE SPECIFICATION CHART

TEMP.[°C (°F)]	Resistance (kΩ)	TEMP.[°C (°F)]	Resistance (kΩ)
-40 (-40°F)	139.5	80 (176°F)	1.08
-20 (-4°F)	47.7	100 (212°F)	0.63
0 (32°F)	18.6	120 (248°F)	0.38
20 (68°F)	8.1	140 (284°F)	0.25
40 (104°F)	3.8	160 (320°F)	0.16
60 (140°F)	1.98

Is resistance within specifications?
YES : --> Go to 2 "CHECK PCM/TCM" as below.

no : --> Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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.
  
  Fig 2: Display Screen Of - 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.