Transmission Fluid Temperature (TFT) Sensor
WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
The transmission fluid temperature (TFT) sensor (1) provides the transmission control module (TCM) with information on the transmission fluid temperature.
The TCM uses information from the TFT sensor to calculate the gear shift points and to engage the torque converter lock-up function.