For 1990-2009 cars

### 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
--- | --- | --- | --- | ---
TFT Sensor | P0712 | P0713 | P0713 | P0711

### Typical Scan Tool Data

#### Transmission Fluid Temperature

Circuit | Short to Ground | Open/High Resistance | Short to Voltage
--- | --- | --- | ---
Operating Conditions: Drive vehicle, normal operating temperature Parameter Normal Range: 100-7,000 RPM
Transmission Fluid Temperature | >= +254°C / +489°F | <= -254°C / -425°F | <= -254°C / -425°F

### Circuit/System Description

The transmission fluid temperature (TFT) sensor is located inside of the transmission control solenoid (w/body and TCM) valve assembly and is not serviced separately. The TFT sensor provides transmission fluid temperature to the transmission control module (TCM). This fault is handled inside the TCM and no external circuits are involved.

### Conditions for Running the DTC

#### P0711 - Fail Case 1

• | No DTCs P0716, P0717, P0722, or P0723.

• | The engine speed is greater than 500 RPM for 10 seconds.

• | The ignition voltage is between 9.0 volts and 19.0 volts.

• | DTC P0711 has not failed this ignition cycle.

• | The TCM temperature sensor is between -40 and +150°C (-40 and +302°F).

• | The transmission fluid temperature is between -50 and +21°C (-58 and +70°F) at startup.

• | Engine coolant is greater than 70°C (158°F).

• | Engine coolant temperature has changed by more than 55°C (131°F) since startup.

• | Vehicle speed has been greater than 8 km/h (5 mph) for at least 300 seconds since startup.

#### P0711 - Fail Case 2

• | No DTCs P0716, P0717, P0722, or P0723.

• | The engine speed is greater than 500 RPM for 10 seconds.

• | The ignition voltage is between 9.0 volts and 19.0 volts.

• | DTC P0711 has not failed this ignition cycle.

• | The TCM temperature sensor is between -40 and +150°C (-40 and +302°F).

• | The transmission fluid temperature is between 129 and 150°C (264 and 302°F) at startup.

• | Engine coolant is greater than 70°C (158°F).

• | Engine coolant temperature has changed by more than 55°C (131°F) since startup.

• | Vehicle speed has been greater than 8 km/h (5 mph) for at least 300 seconds since startup.

#### P0711 - Fail Case 3

• | The engine speed is greater than 470 RPM for 5 seconds.

• | The ignition voltage is between 8.0 volts and 18.0 volts.

#### P0711 - Fail Case 4

• | No DTCs P0716, P0717, P0722, or P0723.

• | The engine speed is greater than 500 RPM for 10 seconds.

• | The ignition voltage is between 9.0 volts and 19.0 volts.

• | DTC P0711 has not failed this ignition cycle.

• | The TCM temperature sensor is between -40 and +150°C (-40 and +302°F).

• | The throttle position is greater than 8 percent.

• | Engine torque is greater than 50 N·m (37 lb ft).

#### P0712

• | The engine speed is greater than 500 RPM for 10 seconds.

• | The ignition voltage is between 9.0 volts and 19.0 volts.

• | DTC P0712 is not failed this ignition cycle.

#### P0713

• | The engine speed is greater than 500 RPM for 10 seconds.

• | The ignition voltage is between 9.0 volts and 19.0 volts.

• | DTC P0713 has not failed this ignition cycle.

### Conditions for Setting the DTC

#### P0711 - Fail Case 1

• | Vehicle speed is 8 km/h (5 mph) or greater for 300 seconds cumulative.

• | TCC slip speed is greater than 150 RPM for 300 seconds cumulative.

• | The TFT is between -40 and +21°C (-40 and +70°F).

• | The TFT has changed by less than 2.0°C (3.6°F) in 100 seconds.

• | The engine coolant temperature (ECT) is greater than 70°C (158°F).

• | The ECT has increased by 55°C (99°F) since startup.

#### P0711 - Fail Case 2

• | Vehicle speed is 8 km/h (5 mph) or greater for 300 seconds cumulative.

• | TCC slip speed is greater than 150 RPM for 200 seconds cumulative.

• | The TFT is between 129-150°C (264-302°F).

• | The TFT has changes by less than 2.0°C (3.6°F) in 100 seconds.

• | The ECT is greater than 70°C (158°F).

• | The ECT has increased by 55°C (99°F) since startup.

#### P0711 - Fail Case 3

The TFT changes by 20°C (36°F) or greater 5 times over 7 seconds.

#### P0711 - Fail Case 4

The TFT changes by 20°C (36°F) or less after a predetermined time.

#### P0712

The TFT sensor is greater than 254°C (489°F) for 10 seconds or more.

#### P0713

The TFT sensor is less than -254°C (-425°F) for 10 seconds or more.

### Action Taken When the DTC Sets

• | DTCs P0711, P0712, and P0713 are Type C DTCs.

• | The TCM freezes transmission adaptive functions.

• | The TCM allows the vehicle to operate in transmission protection mode.

• | The TCM defaults to a calculated transmission fluid temperature based off engine run time and engine coolant temperature.

### Conditions for Clearing the DTC

DTCs P0711, P0712, and P0713 are Type C DTCs.

### Diagnostics Aids

The TCM temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly and its output should resemble that of the transmission fluid temperature (TFT) sensor’s output.

### Reference Information

#### Description and Operation

Electronic Component Description for control solenoid (w/body and TCM) valve assembly

#### DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

1. Engine idling at operating temperature, verify the scan tool Trans fluid temperature parameter is between -254 and +254°C (-425 and +489°F).

⇒ | If not within the specified range, replace the control solenoid (w/body and TCM) valve assembly.

2. Operate the vehicle at 64 km/h (40 mph) for at least 10 minutes, verify the scan tool Trans fluid temperature parameter varies by more than 2°C (3.5°F) to verify that the sensor is not stuck.

⇒ | If not within the specified range, replace the control solenoid (w/body and TCM) valve assembly.

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

| Note: Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection.

• | Refer to Control Module References for control solenoid (w/body and TCM) valve assembly replacement, setup, and programming.

• | Perform the Service Fast Learn Adapts following all transmission related repairs.