P0711
DTC P0711
Diagnostic Instructions
* Perform theDiagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* ReviewStrategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0711
- Transmission Fluid Temperature Sensor Circuit Low Performance
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
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.
Conditions for Running the DTC
* DTCs P0716, P0717, P0721, P0722, P0742, P2184 and P2185 are not active.
* Battery voltage is between 9-18 V.
* Engine speed is greater than 200 RPM.
Condition 1
* The TFT was between -40°C (-40°F) and 21°C (70°F) at startup.
* The engine coolant temperature (ECT) was at least 70°C (158°F) at startup and has increased by 15°C (27°F) since start up.
* The torque converter clutch (TCC) slip speed is 120 RPM or more for at least 5 minutes.
Condition 2
* TFT was between 115°C (239°F) and 150°C (302°F) at startup.
* ECT is at least 70°C (158°F) and has increased by 55°C (99°F) since start up.
* The TCC slip speed is 120 RPM or more for at least 5 minutes.
Condition 3
No additional condition requirements.
Condition 4
* Engine torque is greater than 150 Nm (110 lb ft).
* Vehicle speed is greater than 22 km/h (14 mph).
* Throttle is greater than 10.5 percent.
* Engine speed is greater than 500 RPM.
* ECT is between -39°C (-38°F) and 149°C (300°F).
Condition 5
Induction air temperature (IAT) is not defaulted.
Conditions for Setting the DTC
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).
Action Taken When the DTC Sets
* The TCM uses a calibration default value for TFT.
* The TCM requests the ECM to illuminate the malfunction indicator lamp (MIL) on the second occurrence.
* DTC P0711 is stored in TCM history.
Conditions for Clearing the DTC
DTC P0711 is a Type B DTC.
Diagnostic Aids
You may have to drive the vehicle in order to experience a condition.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
* Transmission General Description (Transmission General Description)
* Transmission Component and System Description (Transmission Component and System Description)
* Electronic Component Description (Electronic Component Description)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
1. Inspect the transmission fluid level. Refer to Transmission Fluid Check (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 (Road Test Procedure) .
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.
Circuit/System Testing
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 (Service and Repair) .
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.
Component Testing
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 (Service and Repair) .
2. Test for resistance between the signal circuit terminal E, and the low reference circuit terminal F. See transmission fluid temperature sensor table, refer toTemperature Versus Resistance (Transmission Fluid Temperature Sensor) (Temperature Versus Resistance (Transmission Fluid Temperature Sensor))Temperature Versus Resistance (Speed Sensor) (Temperature Versus Resistance (Speed Sensor))Temperature Versus Resistance (Solenoid) (Temperature Versus Resistance (Solenoid)) .
• If not within the specified range, replace the pressure switch manifold, with thermistor.
Repair Instructions
Perform theDiagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Wiring Harness Replacement (Service and Repair)
* Pressure Switch Manifold Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for TCM replacement, setup, and programming
Repair Verification
If another DTC is present, refer toDiagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code Descriptions) and perform the appropriate diagnostic procedure.