For 1990-2009 cars

### Circuit Description

The transaxle fluid temperature (TFT) sensor is a thermistor circuit. When the sensor is cold, it has a high resistance and high sensor voltage. As the temperature increases, this resistance and voltage decreases. The PCM supplies a 5-volt signal to the sensor, which is also connected to ground. The PCM reads the voltage drop on the sensor signal lines to determine the corresponding temperature.

### Conditions for Setting the DTC

Important: The TFT sensor is continuously checked when the ignition is ON.

Important: Visually inspect the transaxle fluid temperature wires for evidence of shorts to battery/ignition voltage. Shorts to battery/ignition voltage will skew the sensor resistance and eventually cause DTC P0711 to set.

DTC P0714 sets when the PCM/TC has detected 2 consecutive occurrences of the 0.2 volts or 10 degree change, within 1 second.

### Diagnostic Aids

Visually inspect the transaxle fluid temperature wires for damage. Wiggle the wires while observing the scan tool and watch for a sudden shift in temperature.