2010 Cadillac Truck SRX FWD V6-3.0L Page 1678

2010 Cadillac Truck SRX FWD V6-3.0L Page 1678

DTC P0711, 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 P0711

- Transmission Fluid Temperature Sensor Performance

DTC P0712

- Transmission Fluid Temperature Sensor Circuit Low Voltage

DTC P0713

- Transmission Fluid Temperature Sensor Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The automatic transmission fluid temperature sensor provides transmission fluid temperature to the transmission control module (TCM). The TCM

supplies a 5 V reference signal to the sensor. The automatic transmission fluid temperature sensor is a variable resistor that measures the

temperature of the transmission fluid and is a thermistor, or a resistor that changes value when the temperature changes. The sensor has a negative

temperature coefficient. This means that as the temperature increases the resistance decreases and vice versa. The TCM will compare the

temperature difference between the engine coolant temperature sensor and the automatic transmission fluid temperature sensor to determine if the

temperatures are within an acceptable operating range of each other. This fault is handled inside the TCM and no external circuits are involved.

Conditions for Running the DTC

P0711

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* TCM communication is normal.

* DTCs P0712, P0713 are not set.

* The transmission is not in emergency mode.

* The engine speed is greater than 400 RPM for 10 min.

* Vehicle speed was 40 km/h (25 MPH) or greater at once.

P0712

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

P0713

* The ignition voltage is 10.2-15.5 V.