GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Equinox 🢒 Brakes 🢒 Park Brake 🢒 DTC P0711

Object Number: 882349 Size: MF
Master Electrical Component List
Automatic Transmission Controls Schematics
OBD II Symbol Description Notice
Control Module References

Circuit Description

The automatic transmission fluid temperature (TFT) sensor is a negative coefficient thermistor. When the transmission fluid is cold, the sensor resistance is high. As the transmission fluid warms up, the sensor resistance decreases. This diagnostic monitors the TFT circuit. The circuit may be functional, but not in the normal operating range. This diagnostic indicates stuck or skewed, inaccurate values, indicating poor system performance. The TFT range is -40 to +151°C (-40 to +305°F).

If the transmission control module (TCM) detects no voltage change in the TFT sensor circuit, then DTC P0711 sets. DTC P0711 is a type A DTC.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0711 Transmission Fluid Temperature (TFT) Sensor Performance

Conditions for Running the DTC
    • Trans. Protection Mode is OFF.
    • Vehicle speed is greater than 40 Km/hr.
    • The transmission range switch is DRIVE, INTERMEDIATE, LOW or REVERSE.
    • The TFT at startup is less than 20°C (68°F).

Conditions for Setting the DTC

The TFT has not changed by more than 5°C (9°F) since startup for 900 seconds (15 minutes).

Action Taken When the DTC Sets
    • The TCM requests the powertrain control module (PCM) to illuminate the malfunction indicator lamp (MIL).
    • DTC P1719 is disabled.
    • No lock-up slip neutral control or uphill/downhill control until transmission fluid temperature is greater than 40°C (104°F) for 5 seconds.
    • The TCM discontinues updating the transmission adaptive pressure (TAP) memory cells.
    • The TCM uses 30°C (86°F) as a default transmission fluid temperature.
    • The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Records.
    • 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 DTC P0711 in TCM history.

Conditions for Clearing the MIL/DTC
    • The PCM turns off the MIL after the third consecutive drive trip in which the TCM does not send a MIL illumination request.
    • A scan tool can clear the DTC.
    • The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
    • The TCM cancels the DTC default actions when the ignition switch is OFF long enough in order to power down the TCM.

Test Description

The number below refers to the step number on the diagnostic table.

  1. This step determines if the TCM or the TFT, sensor is causing a steady, unchanging TFT, reading.

Step

Action

Values

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle in Vehicle DTC Information?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Perform the Transmission Fluid Checking Procedure. Refer to Transmission Fluid Check .

Did you perform the Transmission Fluid Checking Procedure?

--

Go to Step 3

Go to Transmission Fluid Check

3
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.

    3. Important: 

       • Before clearing the DTC, use the scan tool in order to record the PCM and the TCM Failure Records. Using the Clear Eng./Trans. DTC Info function erases the Failure Records from the PCM and TCM.
       • Using the Clear Eng./Trans. DTC Info function erases stored DTCs in both the PCM and TCM.

  3. Record the DTC Failure Records.
  4. Clear the DTC.
  5. Select Trans. Fluid Temp. on the scan tool.
  6. Drive the vehicle and observe the scan tool for the following condition:

    7. The Transmission Fluid Temperature (TFT) sensor does not change greater than 5°C (9°F) in 15 minutes since startup.

Did the condition occur?

--

Go to Step 4

Go to Intermittent Conditions in Engine Controls - 3.4L

4

  1. Turn OFF the ignition.
  2. Disconnect the AT inline 14-way connector.
  3. Turn ON the ignition, with the engine OFF.

Did the scan tool display a condition in which the Trans. Fluid Temp. does not change by greater than the specified value from the valve observed during step 3?

5°C (9°F)

Go to Step 6

Go to Step 5

5

Replace the automatic transmission wiring harness. Refer to Wiring Harness Removal in Unit Repair.

Did you complete the replacement?

--

Go to Step 7

--

6

Replace the TCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

--

Go to Step 7

--

7

Perform the following procedure in order to verify the repair:

  1. Select DTC.
  2. Select Clear Info.
  3. Drive the vehicle and ensure the following conditions are met:
    4. • The TFT is -39°C to +149°C (-38°F to +300°F).
    • The TFT changes by greater than 5°C (9°F) since startup.
  4. Select Specific DTC.
  5. Enter DTC P0711.

Does the DTC reset?

--

Go to Step 2

Go to Step 8

8

With the scan tool, observe the stored information, capture info and DTC info.

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

--

Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information

System OK