GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Equinox 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - AF33-5 🢒 DTC P0711, P0712, or P0713

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

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

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Signal

P0712

P0712

P0713

P0711

Ground

P0712

P0712

P0713

P0711

Circuit/System Description

The transmission fluid temperature (TFT) sensor is installed directly in the transmission valve body (V/B). The TFT sensor input/output circuitry consists of an oil temperature sensor signal (-) (OTG), and an oil temperature sensor signal (+) (OT). The sensor converts the transmission oil temperature inside the transmission into an electrical signal and transmits it to the TCM.

Conditions for Running the DTC

P0711

    • There are no transmission range switch DTC’s, P0706, P0707, or P0708.
    • The transmission is not in Emergency Mode.
    • The transmission oil temperature is less than 20°C at initialization.
    • The transmission oil temperature is between 0°C - 150°C.
    • The transmission range is D, L, or M.
    • The vehicle speed has been greater than 40 kmh at least once.

P0712

The transmission is not in Emergency Mode.

P0713

    • There is no engine coolant temperature DTC, P1258.
    • The transmission is not in Emergency Mode.
    • The engine coolant temperature is greater than 50°C.
    • The drive time is greater than 900 seconds (15 minutes).

Conditions for Setting the DTC

P0711

The TCM detects that the transmission oil temperature has not changed at least 1.5°C for 10 minutes.

P0712

The TCM detects that the transmission oil temperature is less than 1.5°C for 5 minutes.

P0713

The TCM detects that the transmission oil temperature is greater than 150°C for 12 seconds.

Action Taken When the DTC Sets
    • DTC P0711, DTC P0712, and DTC P0713 are Type A DTCs.
    • The TCM will disable DTC P1719.
    • The TCM will default the transmission oil temperature to 30°C for 15 minutes, then to 111°C.
    • The TCM inhibits self learning and all adaptive control for 15 minutes.

Conditions for Clearing the DTC

DTC P0711, DTC P0712, and DTC P0713 are Type A DTC’s

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics

Connector End View Reference

    •  Automatic Transmission Inline Harness Connector End View
    •  Automatic Transmission Internal Connector End Views
    •  Automatic Transmission Related Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

DTC Type Reference

    •  Diagnostic Trouble Code (DTC) Type Definitions
    •  Diagnostic Trouble Code (DTC) List/Type

Scan Tool Reference

    •  Scan Tool Output Controls
    •  Scan Tool Data List
    •  Scan Tool Data Definitions

Circuit/System Verification
  1. Ignition ON, observe the DTC information with a scan tool.
  2. Record Freeze Frame and Failure Records.
  3. Clear DTC’s.
  4. Operate the vehicle under the conditions observed in the Failure Records.
  5. Observe the DTC information with the scan tool. Verify that DTC P0711, P0712, or P0713 does not set.

Circuit/System Testing
  1. Ignition OFF, disconnect the 22-way automatic transmission (AT) wiring harness connector (C2) at the TCM.
  2. Ignition ON, at the TCM, test for 4.8 - 5.2 volts between the TFT sensor high signal circuit terminal 14 and low signal circuit terminal 13.
    3. ⇒If not within the specified range, replace the TCM, refer to Transmission Control Module Removal procedure and Transmission Control Module Installation procedure.
  3. Verify the scan tool TCM, Trans. Fluid Temp. parameter is less than 11°C.
    4. ⇒If greater than the specified value, replace the TCM, refer to Transmission Control Module Removal procedure and Transmission Control Module Installation procedure.
  4. Install a 3-A fused jumper wire between the TFT sensor high signal circuit terminal 14 and low signal circuit terminal 13. Verify the scan tool TCM, Trans. Fluid Temp. parameter is greater than 109°C.
    5. ⇒If less than the specified value, replace the TCM, refer to Transmission Control Module Removal procedure and Transmission Control Module Installation procedure.
  5. Ignition OFF, on the AT harness, test for 200 - 8000 ohm of resistance between the TFT sensor high signal circuit terminal 14 and low signal circuit terminal 13.
    6. ⇒If not within the specified range, replace AT wiring harness, refer to Wiring Harness Removal procedure and Wiring Harness Installation procedure.
    ⇒If all circuits test normal, test or replace the AT wiring harness, refer to Wiring Harness Removal procedure and Wiring Harness Installation procedure.

Component Testing

Static Test

  1. Ignition OFF, disconnect the 22-way automatic transmission (AT) wiring harness connector (C2) at the TCM.
  2. Disconnect the automatic transmission (AT) wiring harness connectors at the valve body (V/B).
  3. Place the TFT sensor in water with a temperature of 10oC. Test for 5.80 - 7.09K ohms of resistance between the TFT sensor high signal circuit terminal 14 and low signal circuit terminal 13.
    4. ⇒If not within the specified range, replace the AT wiring harness, refer to Wiring Harness Removal procedure and Wiring Harness Installation procedure.
  4. Place the TFT sensor in water with a temperature of 110oC. Test for 0.231 - 0.263K ohms of resistance between the TFT sensor high signal circuit terminal 14 and low signal circuit terminal 13.
    5. ⇒If not within the specified range, replace the AT wiring harness, refer to Wiring Harness Removal procedure and Wiring Harness Installation procedure.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.