Automatic Transmission - MVB 4 Speed
DTC P0710-P0713
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0710
- Transmission Fluid Temperature (TFT) Sensor A Circuit
DTC P0711
- Transmission Fluid Temperature (TFT) Sensor A Performance
DTC P0712
- Transmission Fluid Temperature (TFT) Sensor A Circuit Low Input
DTC P0713
- Transmission Fluid Temperature (TFT) Sensor A Circuit High Input
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The automatic transmission fluid temperature (TFT) sensor is a thermistor type of sensor. The powertrain control module (PCM) supplies a 5 V reference signal circuit and a low reference circuit to the sensor. When the transmission fluid is cold, the sensor resistance is high and the PCM senses a high signal voltage. As the transmission fluid warms, the sensor resistance lowers and the PCM senses lower voltage. The PCM uses the TFT values to control the torque converter clutch (TCC), line pressure adjustments, and temperature compensated shifts.
Conditions for Running the DTC
P0710, P0711, P0712, or P0713
The engine is running.
Conditions for Setting the DTC
P0710
The ATF temperature sensor resistance is less than 79 ohm or more than 156k ohm within 0.5 seconds.
P0711
* Engine coolant temp (ECT) and intake air temperature (IAT) are greater than -10°C (14°F) during engine start.
* The ATF temperature is less than 10°C (50°F) after 19 minutes or 5 miles of drive time.
OR
* Engine coolant temperature (ECT) is less than 35°C (95°F) during engine start.
* ATF temperature is 100°C (212°F) or more when ECT is 60°C (140°F).
P0712
The ATF temperature sensor resistance is less than 79 ohm for 0.5 seconds or more.
P0713
The ATF temperature sensor resistance is more than 156k ohm when 15 minutes or more have elapsed after engine start.
Action Taken When the DTC Sets
DTC P0710, P0711, P0712, or P0713 are type A DTCs.
Conditions for Clearing the DTC
DTC P0710, P0711, P0712, or P0713 are type A DTCs.
Diagnostic Aids
The battery must be fully charged. Refer to Battery Inspection/Test (Battery Inspection/Test).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Mechanical Component Description (Mechanical Component Description)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference
Powertrain Control Module Scan Tool Information (Scan Tool Testing and Procedures) for scan tool information.
Circuit/System Verification
1. Inspect the transmission fluid for the correct level.
2. Drive the vehicle while observing the transmission fluid temperature parameter on the scan tool.
The transmission fluid temperature should increase by 3°C (5°F) or more.
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.
Circuit/System Testing
1. Ignition OFF, disconnect the PCM harness connector X2.
2. Test for 79-156k ohm on the PCM harness connector X2 between terminals 72 and 95.
• If not within the specified value, test the external and internal voltage circuits and low reference circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the TFT sensor.
3. Test for greater than 10k ohm on the PCM harness connector X2 between terminal 72 and ground.
• If not within the specified value, test the voltage reference circuit for a short to ground. If the circuit tests normal, replace the TFT sensor.
4. Test for greater than 10k ohm on the PCM harness connector X2, between terminal 95 and ground.
• If not within the specified value, test the low reference circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the TFT sensor.
5. If all circuits test normal, replace the PCM.
Component Testing
1. Ignition OFF, disconnect the transmission harness connector.
2. Test for 79-156k ohm on the transmission component connector between terminals 1 and 6.
• If not within the specified value, test the transmission internal voltage reference and low reference circuits for a short to ground or an open/high resistance. If all circuits test normal, replace the TFT sensor.
3. Test for greater than 10k ohm on the transmission component connector between terminal 1 and ground.
• If less than the specified value, test the internal transmission voltage reference circuit for a short to ground. If the circuit tests normal, replace the TFT sensor.
4. Test for greater than 10k ohm on the transmission component connector between terminal 6 and ground.
• If less than the specified value, test the internal low reference circuit for a short to ground. If the circuit tests normal, replace the TFT sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.
* Control Valve Body and Wiring Harness Removal (37. Control Valve Body and Wiring Harness Removal)
* Powertrain Control Module Replacement (Service and Repair)
* Powertrain Control Module Programming and Setup (Testing and Inspection)