P0713

DTC P0713






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.

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 shift adapts.
- 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.
2. A value above 4.9 volts indicates the fault is present. A value below 4.9 volts indicates the fault is intermittent.
3. A value of 4.9 - 5.0 volts indicates the PCM and the engine side of the wiring are good.
6. A short to volts greater than 5.0 volts will cause the TFT sensor to open.
9. A short between the TFT sensor signal circuit and any other circuit in the transmission harness could cause the TFT sensor to open.