2010 Cadillac CTS Sedan AWD V6-3.6L Page 1638
瀚慖f less than 128掳C (262掳F), test the signal circuit of the TFT sensor for a short to voltage or an open/high resistance. If the circuit test
normal, replace the ECM.
5. If all circuits test normal, test or replace the TFT sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Transmission Fluid Temperature Sensor Replacement (See: Powertrain Management/Transmission Control Systems/Sensors and Switches -
Transmission and Drivetrain/Sensors and Switches - M/T/Transmission Temperature Sensor/Switch/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup and programming.
P0713
DTC P0712 or P0713
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0712
- Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage
DTC P0713
- Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The transmission fluid temperature (TFT) sensor is a variable resistor that measures the temperature of the transmission fluid. The engine control
module (ECM) supplies 5 volts to the TFT signal circuit and supplies a ground to the low reference circuit.
The following table illustrates the difference between temperature, resistance, and voltage:
Conditions for Running the DTC
P0712
* The engine speed is above 1,000 RPM for 7 seconds.
* This DTC runs continuously when the above condition is met.
P0713
* The engine speed is above 1,000 RPM for 7 seconds.
* This DTC runs continuously when the above condition is met.
Conditions for Setting the DTC
