GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Holden 🢒 2005 🢒 Statesman 🢒 DTC 🢒 DTC P0711, P0712, or P0713

DTC P0711, P0712, or P0713 V6

DTC Description

This diagnostic procedure supports the following DTCs:

    • DTC P0711--Transmission Fluid Temperature (TFT) Sensor Performance
    • DTC P0712--Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage
    • DTC P0713--Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage

Circuit Description

The automatic Transmission fluid temperature (TFT) sensor is part of the automatic transmission fluid pressure (TFP) manual valve position switch. The automatic TFT sensor is a negative coefficient thermistor. The transmission control module (TCM) supplies a 5 volt reference signal to the sensor and measures the voltage drop in the circuit. When the transmission fluid is cold, the sensor resistance is high and the TCM detects high signal voltage. This diagnostic monitors the TFT circuit. The circuit may be functional, but not in the normal operating range. This diagnostic indicates stuck, erratic, intermittent, skewed, or inaccurate values, indicating poor system performance. The TFT range is -40 to +151°C.

Refer to Automatic Transmission Controls Schematics , Automatic Transmission Inline 20-Way Connector End View, Automatic Transmission Internal Connector End Views , Automatic Transmission Control Module Connector End Views , and Automatic Transmission Related Connector End Views.

Conditions for Running the DTC

DTC P0711

    • No DTC P0117, P0118, P0722 or P0723.
    • DTC P0711 has not passed in the current ignition cycle.
    • The engine run time is greater than 5 seconds.
    • The transmission fluid temperature is -39 to +149°C.
    • For conditions 1 and 2 in conditions for Setting the DTC, the engine coolant temperature is greater than 70°C and has changed by at least 50°C since startup.
    • For conditions 1 and 2 in Conditions for Setting the DTC, the TCC slip speed is 120 RPM or greater for 600 seconds (10 minutes) cumulatively.

DTC P0712

The engine run time is greater than 5 seconds.

DTC P0713

    • No DTCs P0722, P0723.
    • The output shaft speed is greater than 200 RPM for 200 seconds (3 minutes and 20 seconds) cumulative.
    • The TCC slip speed is greater than 120 RPM. for 200 seconds (3 minutes and 20 seconds) cumulative.
    • The engine run time is greater than 5 seconds.

Conditions for Setting the DTC

DTC P0711

One of the following conditions occurs:

Condition 1

    • The transmission fluid temperature at startup is -40 to +21°C.
    • The vehicle speed is greater than 8 km/h for 900 seconds (15 minutes) cumulatively.
    • The transmission fluid temperature has not changed by more than 2°C since startup for 100 seconds (1 minute and 40 seconds).

Condition 2

    • The transmission fluid temperature at startup is 129-150°C.
    • The vehicle speed is greater than 8 km/h for 600 seconds (10 minutes) cumulatively.
    • The transmission fluid temperature has not changed by more than 2°C since startup for 100 seconds (1 minute and 40 seconds).

Condition 3

The transmission fluid temperature has changed by 20°C or greater within 250 milliseconds and it has done this 14 times within 7 seconds.

DTC P0712

The TCM detects a transmission fluid temperature of 150°C or more for 2 seconds.

DTC P0713

The TCM detects a transmission fluid temperature of -39°C or less for 25 seconds.

Action Taken When the DTC Sets
    • The TCM does not request the engine control module (ECM) to illuminate the check powertrain icon.
    • The TCM freezes transmission adaptive functions.
    • The TCM calculates a default transmission fluid temperature based on engine coolant temperature, intake air temperature and engine run time.
    • The TCM records the operating conditions when the conditions for setting the DTC are met. The TCM stores this information as a Failure Record.
    • The TCM stores the DTC in TCM history.

Conditions for Clearing the DTC
    • Tech 2 can clear the DTC.
    • The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non-emission-related diagnostic fault occurring.
    • The TCM cancels the DTC default actions when the fault no longer exists and the DTC passes.

Diagnostic Aids
    • Tech 2 displays the transmission fluid temperature in degrees. After the transmission is operating, the fluid temperature should rise steadily to a normal operating temperature, then stabilize.
    • Verify the customer's driving habits, trailer towing, etc. Trailer towing should occur in D3.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table:

3 Checks the hardware components that affect the transmission fluid temperature.

4 Checks there is power supplied to the TFT sensor.

5 Checks the TFT sensor high reference circuit for serviceability.

6 Check the TFT sensor for serviceability

7 Checks the TFT sensor low reference circuit for serviceability.

Step

Action

Yes

No

1

Has the Diagnostic System been performed?

Go to Step 2

Refer to Diagnostic System Check - Automatic Transmission

2
  1. Connect Tech 2 to the DLC.
  2. Turn on the ignition, with the engine off.

    3. Important: Before clearing the DTC, use the Tech 2 Freeze Frame/Failure Record in order to record the transmission parameters at the time the DTC set. Using Tech 2 to clear the DTC(s) erases the Freeze Frame/Failure Record records from the TCM.

  3. On Tech 2 select: Transmission / Automatic Transmission / Diagnostic Trouble Codes / Freeze Frame.
  4. Select the relevant DTC and note the parameters at the time of the DTC setting.
  5. On Tech 2 select: Diagnostic Trouble Codes / Clear Engine and Transmission DTCs.
  6. Follow the instructions on Tech 2 and clear the DTCs.
  7. On Tech 2 select: Data Display / Transmission Data
  8. Drive the vehicle and observe Tech 2 for either of the following conditions:
    9. • The Trans. Fluid Temp. does not change more than 2.25°C in 409 seconds since startup
    • The Trans. Fluid Temp. changes more than 20°C in 200 milliseconds 14 times within 7 seconds
    • The Trans. Fluid Temp. less than -39°C?

Does Tech 2 display any of the above conditions?

Go to step 4

Go to Step 3

3

Inspect the transmission and related components for the following:

    • Transmission fluid level
    • Transmission fluid cooling system restrictions / blockages
    • Debris in the transmission fluid
    • Incorrect line pressure
    • Torque converter stator operation
    • Transmission overload

Was a fault found and rectified?

Go to Step 10

Check for an intermittent fault in the circuit, refer to Testing for Intermittent Conditions and Poor Connections

4
  1. Switch off the ignition.
  2. Disconnect connector X121-X1 from the transmission.
  3. Using a multimeter set to measure voltage, probe between harness connector X121-X1 pin M and a known ground.

Does the multimeter display 4.8-5.2 V?

Go to Step 6

Go to Step 5

5

Test the TFT sensor signal circuit (circuit 1227) for a high resistance, open circuit, short to ground or short to voltage fault condition.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

6
  1. Switch off the ignition.
  2. Remove the TCM fuses F29 and F8, refer to Section 120 Fuses, Relays and Wiring Harnesses.
  3. Using a multimeter set to measure resistance, probe between connector X121-X1 pin L and a known ground.

Does the multimeter display less than 5 Ω?

Go to Step 8

Go to Step 7

7

Test the TFT sensor low reference circuit (circuit 2762) for high resistance, open circuit, short to ground or short to voltage fault condition.

Was any fault found and rectified?

Go to Step 10

--

8

Replace the TFT sensor, refer to Transmission Fluid Temperature Sensor Specifications.

Important: Check for damaged wiring (short to ground, short to voltage, high resistance or open circuit) or poor connections inside the transmission assembly before replacing the TFT sensor.

Was the repair complete?

Go to Step 10

--

9

Replace the TCM, refer to Transmission Control Module Replacement.

Was the repair completed?

Go to Step 10

--

10

Perform the following procedure in order to verify the repair:

  1. On Tech 2 select: Diagnostic Trouble Codes / Clear Engine and Transmission DTCs.
  2. Follow the instructions on Tech 2 and clear any DTCs.
  3. Start the engine.
  4. Operate the vehicle within the conditions for running the DTC or within the conditions in the Failure Records
  5. On Tech 2 select: Diagnostic Trouble Codes / Read DTC Information.

Have any of the DTCs in this procedure set?

Go to Step 2

Go to Step 11

11

On Tech 2 select: Diagnostic Trouble Codes / Read DTC Information.

Does Tech 2 display any DTCs you have not diagnosed?

Refer to Diagnostic Trouble Code (DTC) List/Type

System OK

When all diagnosis and repairs are completed, check the system for correct operation.