Tremec 6-Speed Manual Transmission
DTC P0713
Circuit Description
Important: This diagnostic procedure is for manual transmission vehicles with RPO VD1 and/or RPO Z06.
The transmission fluid temperature (TFT) sensor contains a semiconductor device which changes the resistance based on the temperature, a thermistor. The TFT sensor has a signal circuit and a ground circuit. The engine control module (ECM) applies a voltage, approximately 5.0 volts, on the signal circuit to the sensor. The ECM monitors the changes in this voltage caused by changes in the resistance of the sensor in order to determine the fluid temperature.
When the ECM senses a signal voltage lower than the normal operating range of the sensor, DTC P0713 sets. DTC P0713 is a type C DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0713 Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage
Conditions for Running the DTC
The engine speed is above 1,000 RPM for 7 seconds.
Conditions for Setting the DTC
* The TFT is less than -35°C (-31°F).
* The conditions are met for 5 seconds.
Action Taken When the DTC Sets
* The ECM stores the DTC information into memory when the diagnostic runs and fails.
* The malfunction indicator lamp (MIL) will not illuminate.
* The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records.
* A message is displayed on the drivers information center (DIC).
Conditions for Clearing the DTC
* A scan tool can clear the DTC.
* The ECM clears the DTC from ECM history if the vehicle completes 40 warm-up cycles without a non-emission-related diagnostic fault occurring.
* The ECM cancels the DTC default actions when the fault no longer exists and the DTC passes.
Diagnostic Aids
Important:
* Remove any debris from the ECM connector surfaces before servicing the ECM. Inspect the ECM connector gaskets when diagnosing/replacing the module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the ECM.
* For any test that requires probing the ECM or a component harness connector, use the J 35616 GM terminal test kit. Using this kit prevents damage to the harness/component terminals. Refer to Using Connector Test Adapters.
* If the engine has sat overnight, the TFT and the intake air temperature values should display within a few degrees of each other. If the temperatures are not within 3°C (5°F), refer to Temperature Versus Resistance.
* For an intermittent, refer to Symptoms - Computers and Control Systems. - Symptoms - Engine Controls
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step determines if the malfunction is present.
3. Using the Freeze Frame/Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records data can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can also help determine how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions, such as RPM, load, vehicle speed, temperature, that you observed. This will isolate when the DTC failed.
4. A TFT above 139°C (282°F) indicates the ECM and TFT sensor wiring is OK.
5. A TFT above 139°C (282°F) indicates the ECM and TFT sensor signal circuit is OK.
6. Disconnecting the ECM allows using the DMM in order to test continuity of the circuits. This aids in locating an open or a shorted circuit.
8. Disconnecting the ECM allows using the DMM in order to test continuity of the circuits. This aids in locating an open or a shorted circuit.
11. This step inspects for proper terminal tension/connections at the ECM harness before replacing the ECM.
