GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Corvette 🢒 Engine 🢒 Engine Controls - 5.7L 🢒 DTC P0713

Object Number: 730571 Size: SF
Master Electrical Component List
Manual Transmission Schematics
OBD II Symbol Description Notice

Circuit Description

Important: This diagnostic procedure is for manual transmission vehicles with option RPO VD1.

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 PCM applies a voltage (about 5.0 volts) on the signal circuit to the sensor. The PCM monitors the changes in this voltage caused by changes in the resistance of the sensor in order to determine the fluid temperature.

When the PCM senses a signal voltage lower than the normal operating range of the sensor, this DTC will set.

Conditions for Running the DTC

The ignition switch is in the ON position or the engine is operating.

Conditions for Setting the DTC
    • The TFT is less than -30°C (-22°F).
    • Conditions met for 10 seconds.

Action Taken When the DTC Sets
    • The PCM stores the DTC information into memory when the diagnostic runs and fails.
    • The malfunction indicator lamp (MIL) will not illuminate.
    • The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Failure Records.
    • A message is displayed on the Drivers Information Center.

Conditions for Clearing the DTC
    • A last test failed, or current DTC, clears when the diagnostic runs and does not fail.
    • A history DTC will clear after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
    • Use a scan tool in order to clear the DTC.

Diagnostic Aids

Important: 

   • Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM.
   • For any test that requires probing the PCM or a component harness connector, use the Connector Test Adapter Kit J 35616 . Using this kit prevents damage to the harness/component terminals. Refer to Using Connector Test Adapters in Wiring Systems.

    • If the engine has sat overnight, the Transmission Fluid Temperature and 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 in Engine Controls.
    •  For an intermittent, refer to Symptoms - Engine Controls in Engine Controls.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This step determines if the malfunction is present.

    2.

  2. Using the Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or 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 (RPM, load, vehicle speed, temperature, etc.) that you observed. This will isolate when the DTC failed.

    3.

  3. A Transmission Fluid Temperature above 139°C (282°F) indicates the PCM and TFT sensor wiring is OK.

    4.

  4. A Transmission Fluid Temperature above 139°C (282°F) indicates the PCM and TFT sensor signal circuit is OK.

    5.

  5. Disconnecting the PCM allows using the DMM in order to test continuity of the circuits. This aids in locating an open or a shorted circuit.

    6.

  6. Disconnecting the PCM allows using the DMM in order to test continuity of the circuits. This aids in locating an open or a shorted circuit.

    7.

  7. Inspect for proper terminal tension/connections at the PCM harness before replacing the PCM.

Step

Action

Values

Yes

No

1

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

--

Go to Step 2

Go to Diagnostic System Check - Engine Controls

2

  1. Install a scan tool.
  2. Turn ON the ignition leaving the engine OFF.
  3. Monitor the TFT sensor display on the Engine 3 Data List of the scan tool.

Is the TFT sensor at the specified value?

-39°C (-38°F)

Go to Step 4

Go to Step 3

3

  1. Turn ON the ignition leaving the engine OFF.
  2. Review the Freeze Frame and/or Failure Records data for this DTC and observe the parameters.
  3. Turn OFF the ignition for 15 seconds.
  4. Start the engine.
  5. Operate the vehicle within the conditions required for this diagnostic to run, and as close to the conditions recorded in the Freeze Frame/Failure Records as possible. Special operating conditions that you need to meet before the PCM will run this diagnostic, where applicable, are listed in Conditions for Running the DTC.
  6. Select the Diagnostic Trouble Code (DTC) option, the Specific DTC option, then enter the DTC number using the scan tool.

Does the scan tool indicate that this diagnostic failed this ignition?

--

Go to Step 4

Go to Diagnostic Aids

4

  1. Disconnect the TFT sensor electrical connector.
  2. Jumper the TFT sensor harness terminals together.
  3. Observe the Transmission Fluid Temperature parameter on the scan tool.

Is the TFT sensor at the specified value?

150°C (284°F)

Go to Step 9

Go to Step 5

5

Jumper the TFT sensor signal circuit to a known good ground.

Is the TFT sensor at the specified value?

150°C (284°F)

Go to Step 8

Go to Step 6

6

  1. Turn OFF the ignition.
  2. Disconnect the PCM connector C2 located on the opposite side of the manufacturer's logo. Refer to Powertrain Control Module Replacement in Engine Controls.
  3. Test the TFT sensor signal circuit for an open. Refer to Circuit Testing in Wiring Systems.

Is the TFT sensor signal circuit open?

--

Go to Step 7

Go to Step 11

7

Repair the TFT sensor signal circuit. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

--

Go to Step 14

--

8

  1. Turn OFF the ignition.
  2. Disconnect the PCM connector C1 located on the same side as the manufacturer's logo. Refer to Powertrain Control Module Replacement in Engine Controls.
  3. Test the TFT sensor ground circuit for an open. Refer to Circuit Testing in Wiring Systems.

Is the TFT sensor ground circuit open?

--

Go to Step 10

Go to Step 11

9

Replace the TFT sensor. Refer to Transmission Fluid Temperature Sensor Replacement .

Is the action complete?

--

Go to Step 14

--

10

Repair the TFT sensor ground circuit. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

--

Go to Step 14

--

11

  1. Test for a short to voltage on the signal circuit. Refer to Circuit Testing in Wiring Systems.
  2. If you find the circuit shorted, repair the condition as necessary. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 14

Go to Step 12

12
  1. Inspect for poor connections at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
  2. If you find a poor connection, repair the condition as necessary. Refer to Repairing Connector Terminals in Wiring Systems.

Did find and correct the condition?

--

Go to Step 14

Go to Step 13

13

Important: Program the replacement PCM.

Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls.

Is the action complete?

--

Go to Step 14

--

14
  1. Select the Diagnostic Trouble Code (DTC) option and the Clear DTC Information option using the scan tool.
  2. Start the engine and idle at the normal operating temperature.
  3. Select the Diagnostic Trouble Code (DTC) option and the Specific DTC option, then enter the DTC number using the scan tool.
  4. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text, if applicable.

Does the scan tool indicate that this test ran and passed?

--

Go to Step 15

Go to Step 2

15

Select the Capture Info option and the Review Info option using the scan tool.

Does the scan tool display any DTCs that you have not diagnosed?

--

Go to the applicable DTC table

System OK