DTC P0711, P0712, or P0713
Diagnostic Instructions
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
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Signal
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P0712
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P0711, P0713
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P0711, P0713
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P0711
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Low Reference
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--
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P0711, P0713
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P0711, P0713
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P0711
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Typical Scan Tool Data
Transmission Fluid
Temperature
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Circuit
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Short to Ground
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Open
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Short to Voltage
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Operating Conditions: Ignition switch
ON, engine stop
Parameter Normal Range: -40 to
+215°C (-40 to +419°F)
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Signal
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-43°C (-45°F)
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215°C (419°F)
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215°C (419°F)
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Low Reference
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--
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215°C (419°F)
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215°C (419°F)
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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. |
| • |
TCM communication is normal. |
P0713
| • |
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 time is more than 10 min. |
| • |
TCM communication is normal. |
Conditions for Setting the DTC
P0711
The automatic transmission fluid temperature is less than
20°C (36°F) after 10 min driving or more.
P0712
The automatic transmission fluid temperature is more than
200°C (473°F) for 10 s or more after consecutive
30 times.
P0713
The automatic transmission fluid temperature is lower than
-43°C (-45°F) for 1 s or more after consecutive
12 times.
Action Taken When the DTC Sets
| • |
The TCM will default the transmission oil
temperature to 80°C (353°F). |
| • |
No lock-up slip control |
| • |
No self learning control |
Conditions for Clearing the DTC
P0711, P0712, and P0713
These are Type C DTCs.
P0712, P0713
The automatic transmission fluid temperature is between
20-150°C (68-302°F) for 10 s or more.
Diagnostic Aids
A correct transmission fluid level is required for a proper
function. The automatic transmission fluid temperature sensor is
located inside the transmission at the valve body. To ensure that
the shown oil temperature is correct, measure the oil temperature
with an external thermometer.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Transmission Component and System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Perform the
Transmission Fluid Level and Condition Check to verify correct
fluid level.
- Engine idling at operating temperature, observe the
scan tool Transmission Fluid Temperature parameter. The reading
should be between -40 to +215°C (-40 to +488°F) and
change.
- Operate the vehicle at about 60 km/h
(37 MPH) for 10 min. Verify the scan tool Transmission
Fluid Temperature parameter varies by more than 2°C (3.5°F)
to verify that the sensor is not stuck.
Circuit/System Testing
Operate the vehicle within the conditions for running and
setting 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.
Component Testing
Static Test
- Ignition OFF, remove the K71 Transmission Control
Module.
- Ignition OFF, test for infinite resistance between the
low reference circuit terminal 7 X2 and ground.
If less than the specified range, replace the wiring
harness.
- Ignition OFF, test for infinite resistance between the
signal circuit terminal 8 X2 and ground.
If less than the specified range, replace the wiring
harness.
- Test for infinite resistance between each terminal and
the low reference circuit terminal 7 X2 and also to the
signal circuit terminal 8 X2.
If less than the specified range, replace the wiring
harness.
- Test for the resistance between the B13 Automatic
Transmission Fluid Temperature Sensor signal circuit
terminal 7 X2 and the low reference circuit
terminal 8 X2. Refer to
Transmission Fluid Temperature Sensor Specifications for the
resistance values.
If not within the specified range, replace the wiring
harness.
- If the circuit test normal, replace the
K71 Transmission Control Module.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
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