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

### Circuit/System Description

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

### Conditions for Running the DTC

#### P0711

• | For conditions 1, 2, and 4

- | No DTCs P0711, P0716, P0717, P0722, or P0723.

- | The ECT value is valid, star the ignition voltage, run the engine.

- | DTC P0711 fails this ignition.

- | The TCM temperature sensor is between -49 and +169°C (-56 and +336°F).

• | For conditions 1

- | The TFT is between -50 and +21°C (-58 and +70°F).

- | ECT is more than 70°C (158°F).

- | The TFT has increased by 55°C (99°F) since startup.

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

• | For conditions 2

- | The TFT is between 129 and 170°C (264-338°F).

- | The ECT is more than 70°C (158°F).

- | The TFT has increased by 55°C (99°F) since startup.

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

• | For conditions 3

- | The system voltage is between 8 and 18 volts.

- | The engine speed is between 450 and 7,500 RPM for 5 seconds.

• | For conditions 4

- | The engine torque is between 50 and 1 492 N·m (37 and 1,100 lb ft).

- | The TP angle is between 8% and 100%.

- | Vehicle speed is between 8 and 511 km/h (5 and 318 mph).

- | The engine speed is between 500 and 6,500 RPM.

- | The coolant temperature is between -39 and +149°C (-38 and +300°F).

#### P0712

• | Start the ignition voltage, run the engine.

• | The transmission output shaft speed is greater than 200 RPM for greater than 200 seconds.

• | The TCC slip speed is equal to or greater than 120 RPM for more than 200 seconds.

• | DTC P0712 passed this ignition cycle.

#### P0713

• | Start the ignition voltage, run the engine.

• | DTC P0713 passed this ignition cycle.

### Conditions for Setting the DTC

#### P0711

• | Fail Case 1

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

- | TCC slip speed is greater than 120 RPM for 300 seconds cumulative.

- | The TFT is between -50 and +21°C (-58 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.

• | Fail Case 2

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

- | TCC slip speed is greater than 120 RPM for 300 seconds cumulative.

- | The TFT is between 129-170°C (264-338°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.

• | Fail Case 3

| The TCM power up temperature changes by greater than or equal to 20°C (36°F) 14 times over 7 seconds.

• | Fail Case 4

| After the given time, the TFT still lower than or equal to 20°C (68°F).

#### P0712

The TCM power up temperature is greater than or equal to -74°C (-101°F) for greater than 25 seconds.

#### P0713

The TFT is less than or equal to 174°C (345°F) for greater than 10 seconds.

### 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.

### Conditions for Clearing the DTC

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

### Reference Information

#### Schematic Reference

Automatic Transmission Controls Schematics

#### Connector End View Reference

• | Automatic Transmission Inline 16-Way Connector End View

• | Automatic Transmission Internal Connector End Views

• | Automatic Transmission Related Connector End Views

#### DTC Type Reference

• | Diagnostic Trouble Code (DTC) Type Definitions

• | Diagnostic Trouble Code (DTC) List/Type

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Verification

1. Start the engine and operate the vehicle at 64 km/h (40 mph) while observing the TCM start up temperature sensor and the TFT sensor.
2. The system is operating normally if the TCM start up temperature is within 10°C (18°F) of the TFT temperature.

### Circuit/System Testing

Clear the DTC and operate the vehicle under the conditions for running and setting the DTC. Verify that the DTC does not reset.

⇒ | If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.

### Component Testing

Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection .

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. Control solenoid (w/body and TCM) valve assembly replacement. Refer to Control Module References for replacement, setup, and programming.
2. Perform the Service Fast Learn Adapts .