Transmission Temperature Sensor/Switch: Description and Operation

DESCRIPTION

The Transmission Fluid Temperature (TFT) sensor is a thermistor which changes resistance based on the temperature of the transaxle fluid. A high transaxle temperature may cause the vehicle to operate in "Hot Mode." While in "Hot Mode," shift points may be altered, 4th gear disabled and Torque Converter Clutch (TCC) forced "ON" in 2nd. A failure in the TFT sensor or associated wiring should cause a Diagnostic Trouble Code (DTC) 58 or 59 to set.