P0713

Diagnostic Chart:

Schematic:

The automatic transmission fluid temperature (TFT) sensor is a thermistor that varies resistance according to changes in transmission fluid temperature. The TCM supplies 5 volt reference through a pull resistor to the sensor, which is connected to ground. When the sensor is cold it has high resistance. As the sensor temperature increases, its resistance decreases. The TCM uses the signal voltage to determine transaxle fluid temperature. DTC P0713 sets when the TFT sensor signal voltage at the TCM is above the calibrated voltage value.

DTC PARAMETERS
DTC P0713 will set if TFT temperature is below 0°C (32°F) when:
^ No ECT DTCs are set
^ Transaxle Protection Mode is OFF
^ The vehicle has been driven for at least 15 minutes.
^ Engine Coolant Temperature is at least 50°C (122°F)
^ Condition exists for longer than 12 seconds

DTC P0713 diagnostic runs continuously when the above conditions have been met.

DTC P0713 is a type A DTC.

DIAGNOSTIC AIDS

NOTE: A short B+ on signal circuit 585 may damage the TFT sensor. Check for correct resistance vs. temperature after repair has been made.

To locate an intermittent problem, use a Scan tool to monitor Transaxle Fluid Temp with ignition on, engine Off. Wiggling wires while watching for a change on Transaxle Fluid Temp may locate the area where an open or short to voltage in the wiring could lie.

A 1 kohm resistor may be substituted for SA90252 Decade Box, if desired.