Transmission Fluid Temperature (TFT) Sensor

The TFT  sensor connects to the TCM  through wiring inside the lead frame module assembly.

The TFT  sensor is a temperature dependent resistor that is in contact with transmission fluid in the transmission sump area.

The TCM  monitors the voltage across the TFT  sensor, which changes as TFT  varies.

The TCM  uses the TFT  sensor signal as an input for its strategy for shifting and TCC  operation. The TCM  also uses the TFT  sensor signal for transmission fault detection and diagnostics.

Refer to Figure at the beginning of this procedure for the location of the TFT  sensor.