Transmission Temperature Sensor/Switch: Service and Repair

Transmission Fluid Temperature (TFT) Sensor





Removal

1. Remove the transmission fluid pan gasket and filter. For additional information, refer to Fluid Pan, Gasket and Filter TorqShift(R).

2. Disconnect the Transmission Fluid Temperature (TFT) sensor connector.





3. Press the tab, rotate the sensor counterclockwise and pull out.





4. Inspect the O-ring. If the O-ring is damaged install a new TFT sensor.

Installation

1. Lightly lubricate the O-ring with automatic transmission fluid and install a new TFT sensor. Make sure to slightly rotate the sensor to lock it in place.





2. Connect the TFT sensor connector.





3. Install the transmission fluid filter, pan gasket and pan. For additional information, refer to Fluid Pan, Gasket and Filter TorqShift(R).

4. NOTICE: The use of any other transmission fluid than specified can result in the transmission failing to operate in a normal manner or transmission failure.

Fill the transmission.

- Add 7.0L (7.5 qt) of transmission fluid to the transmission through the transmission fluid filler tube.

5. Start the engine. Move the selector lever through all the gear ranges, checking for engagements.

6. With the vehicle in NEUTRAL, engine running and the transmission at normal operating temperature 66-77°C (150-170°F), check and adjust the transmission fluid level and check for any leaks. If transmission fluid is needed, add transmission fluid in increments of 0.24L (0.5 pt) until the correct level is achieved (transmission fluid should be in the hot range cross-hatched area of the transmission fluid level indicator).