P0713

DTC P0713

Steps 1-6:

Steps 7-13:

Steps 14-15:

Circuit Description
The automatic Transmission Fluid Temperature (TFT) sensor is a negative coefficient thermistor whose resistance value changes based on temperature. The PCM provides a 5 volt reference to the sensor. A low fluid temperature, an open TFT sensor or sensor circuit results in high signal voltage. The TFT operating range is -40 to +151°C (-40 to +304°F).
If the PCM detects a continuous open or a short to power on the TFT sensor circuit, then DTC P0713 sets. DTC P0713 is a type C DTC.

Conditions for Running the DTC
^ The system voltage is 9 - 18 volts.
^ The ignition is ON.

Conditions for Setting the DTC
The PCM detects a TFT sensor voltage greater than 4.92 volts for 6 minutes and 40 seconds continuous.

Action Taken When the DTC Sets
^ The PCM does not turn on the Malfunction Indicator Lamp (MIL).
^ The PCM freezes transmission adaptive functions.
^ The PCM calculates a default TFT from the ECT sensor and the IAT sensor.
^ The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Failure Records.
^ The PCM stores DTC P0713 in PCM history.

Conditions for Clearing the DTC
^ A scan tool can clear the DTC.
^ The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without a non-emission-related diagnostic fault occurring.
^ The PCM cancels the DTC default actions when the fault no longer exists and the DTC passes.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
3. A value of 4.9 - 5.0 volts indicates the PCM and engine side of the wiring are good.
6. A short to voltage greater than 5 volts would cause the TFT sensor to open.
9. A short to the TFT sensor signal circuit and any other circuits in the transmission harness could cause the TFT sensor to open.