The transmission fluid temperature (TFT) sensor is a 2 wire sensor located in the pressure switch manifold (PSM). The transmission control module (TCM) supplies 5 V on the signal circuit and a ground circuit to the TFT sensor. The resistance of the TFT sensor decreases as the oil temperature increases. The TCM monitors the voltage drop across the TFT sensors and calculates the temperature of the transmission oil in the oil pan.

Condition 1

Condition 2

Condition 3

No additional condition requirements.

Condition 4

Condition 5

Induction air temperature (IAT) is not defaulted.

Condition 1

The TFT has not risen 2°C (4°F) since startup for 100 seconds and the vehicle speed is greater than 8 km/h (5 mph) for 300 seconds.

Condition 2

The TFT has not risen 3°C (5°F) since startup for 100 seconds and the vehicle speed is greater than 8 km/h (5 mph) for 300 seconds.

Condition 3

The TFT changes more than 20°C (36°F) in 7 seconds.

Condition 4

The TFT does not reach 20°C (68°F) within a period of time that varies with TFT at start up.

Condition 5

At startup when engine speed is greater than 500 RPM for 2 seconds and ECT is between -39°C (-38°F) and 50°C (122°F), if the difference between IAT and ECT is less than 6°C (11°F) and the difference between ECT and TFT is greater than 40°C (72°F), or if the difference between IAT an ECT is greater thane 6°C (11°F) and the difference between ECT and TFT is greater than 60°C (108°F).

DTC P0711 is a Type B DTC.

You may have to drive the vehicle in order to experience a condition.

Schematic Reference

Automatic Transmission Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Inspect the transmission fluid level. Refer to Transmission Fluid Check.
2. Perform a road test while observing the Trans. Fluid Temp. with a scan tool. The Trans. Fluid Temp. parameter should rise steadily to a normal operating temperature, and then stabilize. Refer to Road Test.
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 on the Freeze Frame/Failure Records data.

Note: You must perform the Circuit/System Verification first.

1. Ignition OFF, disconnect the X175 harness connector at the transmission.
2. Ignition ON, engine OFF, connect a 3A fused jumper wire to the TFT signal circuit terminal pin G, to TFT low reference circuit terminal H. Verify with a scan tool that the Trans. Fluid Temp. parameter changes from -40°C (-40°F) to 160°C (320°F).

⇒	If not the specified value, test the TFT signal circuit and low reference circuit for a short to voltage, short to ground or an open/high resistance. If circuits test normal, replace the TCM.

3. Remove the transmission oil pan. Refer to Oil Pan Replacement.
4. Test the transmission internal TFT signal and low reference circuits for a short to voltage, short to ground or and open/high resistance.

⇒	If circuits test normal, test or replace the pressure switch manifold.

Static Testing

Note: You must perform the Circuit/System Testing first.

1. Ignition OFF, remove the pressure switch manifold from the valve body. Refer to Pressure Switch Manifold Replacement.
2. Test for resistance between the signal circuit terminal E, and the low reference circuit terminal F. See transmission fluid temperature sensor table, refer to Temperature Versus Resistance.

⇒	If not within the specified range, replace the pressure switch manifold, with thermistor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

If another DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle and perform the appropriate diagnostic procedure.