TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [5R55S]

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Caution
•  Water or foreign material entering the connector can cause poor connections or corrosion. Be sure that water or foreign material do not enter the connector when disconnecting it.

On-Vehicle Inspection

1.  Disconnect the negative battery cable.

2.  Remove the digital TR sensor insulator.

3.  Remove the CKP sensor insulator.

4.  Remove the insulator bracket.

5.  Disconnect the AT connector.

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6.  Measure resistance between the AT terminals K and L.

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•  If there is any malfunction, perform the off-vehicle inspection for TFT sensor. (See Off-Vehicle Inspection.)

Transmission fluid temperature (TFT) sensor

ATF temperature (°C {°F})

Resistance (kilohm)
-40—-20 {-40—-4}
284—967
-19—-1 {-3—30}
100—284
0—20 {32—68}
37—100
21—40 {70—104}
16—37
41—70 {106—158}
5—16
71—90 {160—194}
2.7—5
91—110 {196—230}
1.5—2.7
111—130 {232—266}
0.8—1.5
131—150 {268—302}
0.54—0.8

7.  Connect the AT connector.

8.  Remove the insulator bracket. (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION [5R55S].)

9.  Remove the CKP sensor insulator. (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION [5R55S].)

10.  Remove the digital TR sensor insulator. (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION [5R55S].)

11.  Connect the negative battery cable.


Off-Vehicle Inspection

Warning
•  A hot the transmission and ATF can cause severe burns. Turn off the engine and wait until they are cool before replacing ATF.

1.  Remove the solenoid body. (See SOLENOID BODY REMOVAL/INSTALLATION [5R55S].)

2.  Place the solenoid body and a thermometer in ATF as shown in the figure, and heat the ATF gradually.

3.  Measure the resistance between the solenoid body terminals K and L.

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•  If there is any malfunction, replace the solenoid body. (See SOLENOID BODY REMOVAL/INSTALLATION [5R55S].)

Transmission fluid temperature (TFT) sensor

ATF temperature (°C {°F})

Resistance (kilohm)
-40—-20 {-40—-4}
284—967
-19—-1 {-3—30}
100—284
0—20 {32—68}
37—100
21—40 {70—104}
16—37
41—70 {106—158}
5—16
71—90 {160—194}
2.7—5
91—110 {196—230}
1.5—2.7
111—130 {232—266}
0.8—1.5
131—150 {268—302}
0.54—0.8

4.  Install the solenoid body. (See SOLENOID BODY REMOVAL/INSTALLATION [5R55S].)