P0713

Schematic:

Circuit Description with 4T65-E Automatic Transaxle

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°C to +151°C (-40°F 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 consecutive 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 ignition switch is OFF long enough in order to power down the PCM.

DIAGNOSTIC AIDS
^ Inspect the connectors at the controller, the component and all other circuit connecting points for an intermittent condition. Refer to Testing for Intermittent and Poor Connections in Diagrams.
^ Inspect the circuit wiring for an intermittent condition. Refer to Testing for Electrical Intermittents in Diagrams.


TEST DESCRIPTION

Steps 1 - 6:

Steps 7 - 11:

The numbers below refer to the step numbers on the diagnostic table.
3. A value above 4.9 volts indicates the fault is present. A value below 4.9 voltsindicates the fault is intermittent.
4. A value less than 0.2 voltsindicates the PCM and engine wiring are good.