Transmission Fluid Temperature (TFT) Sensor

DESCRIPTION
The transmission fluid temperature (TFT) sensor is located on the transmission main control valve body. It is a temperature sensitive device called a thermistor. The resistance value of the TFT will vary with temperature change. The powertrain control module monitors the voltage across the TFT to determine the temperature of the transmission fluid. The powertrain control module uses this voltage signal to determine whether a cold start shift schedule is necessary. The shift schedule is compensated when the transmission fluid is cold. The powertrain control module also inhibits torque converter clutch operation at low transmission fluid temperatures and corrects EPC pressures for temperature.

SYMPTOMS
Torque converter clutch (TCC) engagement and stabilized shift schedules happen too soon after a cold start.

DTC's
P0712, P0713, P1711, P1783, P1710