Temperature Sensor, Transmission Control
TRANSMISSION FLUID TEMPERATURE (TFT) SENSORThe Transmission Fluid Temperature (TFT) sensor is located on the lead frame assembly near the shift solenoids on the main control valve body. It is a temperature sensitive device called a thermister. It sends a voltage signal to the Powertrain Control Module (PCM). The voltage signal varies with transmission fluid temperature. The PCM uses this signal to determine whether a cold start shift schedule is necessary. The shift schedule is compensated when the transmission fluid temperature is cold. The PCM also inhibits Torque Converter Clutch (TCC) operation at low transmission fluid temperatures and corrects electronic pressure control.