Dtc P0711 Transmission Fluid Temperature Sensor A Performance

Drivetrain. Yaris. Ncp93, 131
U340E Automatic Transmission Transaxle. Yaris. Ncp93, 131

DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

INSPECTION PROCEDURE

CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711)

CHECK TRANSMISSION FLUID LEVEL

DTC P0711 Transmission Fluid Temperature Sensor "A" Performance


DESCRIPTION

The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance value which is input to the ECM.
The sensor resistance changes with the transmission fluid temperature. As the temperature rises, the sensor resistance decreases. The ECM applies a voltage to the temperature sensor through ECM terminal THO1, and the ECM calculates the fluid temperature based on the voltage signal.
HINT:
  1. The ATF temperature is likely to increase under conditions such as towing, climbing hills and in traffic.
  2. When the ATF temperature sensor is normal, the transmission locks up in 4th gear with the shift lever in D and in 3rd gear with the shift lever in 3.

DTC No.
DTC Detection Condition
Trouble Area
P0711
One of the following conditions (A), (B), (C), (D) or (E) is met:
  1. ATF level
  2. Transmission wire (ATF temperature sensor)
Condition (A):
(except Mexico models)
(a), (b), (c) and (d) are detected: (2-trip detection logic).
(a) After normal driving for 10 minutes and 5 km (3.1 miles) or more.
(b) Intake air and engine coolant temperature are 15°C (59°F) or more at 12 seconds after engine start.
(c) Soak time is 5 hours or more.
(d) ATF temperature is less than 20°C (68°F)
Condition (B):
(a), (b) and (c) are detected: (2-trip detection logic).
(a) After normal driving for 18 minutes and 20 seconds and 9 km (5.6 miles) or more.
(b) Intake air and engine coolant temperature are -10°C (14°F) or more at 12 seconds after engine start.
(c) ATF temperature is less than 20°C (68°F)*1 or 10°C (50°F)*2
Condition (C):
(a), (b) and (c) are detected: (2-trip detection logic).
(a) After normal driving for 30 minutes and 15 km (9.3 miles) or more.
(b) Intake air and engine coolant temperature are -15°C (5°F) or more at 12 seconds after engine start.
(c) ATF temperature is less than 20°C (68°F)*1 or 10°C (50°F)*2
Condition (D):
Both (a) and (b) are detected: (2-trip detection logic).
(a) After normal driving for 40 minutes and 20 km (12.4 miles) or more.
(b) ATF temperature is less than 20°C (68°F)*1 or 10°C (50°F)*2
Condition (E):
Both (a) and (b) are detected: (2-trip detection logic).
(a) Engine coolant temperature is less than 35°C (95°F) at 12 seconds after engine start.
(b) ATF temperature is 100°C (212°F) or more.
  1. *1: except Mexico models
  2. *2: for Mexico models

MONITOR DESCRIPTION

The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature and detects opens or shorts in the ATF temperature circuit or a fault of the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature is below 20°C (68°F)*1 or 10°C (50°F)*2 after running the vehicle for a certain period, the ECM interprets this as a fault, and turns on the MIL and stores the DTC.
When the ATF temperature is 100°C (212°F) or more and engine coolant temperature reaches 60°C (140°F) after cold start, the ECM also determines this as a fault, turns on the MIL, and stores the DTC.
  1. *1: except Mexico models
  2. *2: for Mexico models

MONITOR STRATEGY


Related DTCs
P0711:
ATF temperature sensor/Rationality check
Required sensors/Components
ATF temperature sensor
Frequency of operation
Continuous
Duration
Condition (A), (B), (C), and (D): 3 seconds
Condition (E): Continuous
MIL operation
2 driving cycles
Sequence of operation
None

TYPICAL ENABLING CONDITIONS


All
Transmission Fluid Temperature Sensor "A" circuit
No circuit malfunction
(P0710*1, P0712, P0713)
ECT sensor circuit
No circuit malfunction
(P0115, P0117, P0118)
IAT sensor circuit
No circuit malfunction
(P0110, P0112, P0113)
Electronic Throttle Control System
No circuit malfunction
(P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P0607*1, P060A, P060D, P060E, P0657, P1607, P2102, P2103, P2111, P2112, P2118, P2119, P2135)
Soak Timer circuit
No circuit malfunction
(P2610)
  1. *1: for Mexico models

Condition (A)
Time after engine start
10 minutes or more
Driving distance after engine start
5 km (3.1 miles) or more
IAT (12 seconds after engine start)
15°C (59°F) or more
ECT (12 seconds after engine start)
15°C (59°F) or more
Soak time
5 hours or more
Accumulated driving time*1
1 minutes 40 seconds or more
*1: Following conditions are met

Engine speed - Input (Turbine) speed
50 rpm or more
Output speed
400 rpm or more
Throttle valve opening angle
3% or more
Shift position
Not "N" or "P"
Engine speed
300 rpm or more

Condition (B)
Time after engine start
18 minutes and 20 seconds or more
Accumulated driving time*1
4 minutes and 10 seconds or more*2
3 minutes and 50 seconds or more*3
Driving distance after engine start
9 km (5.6 miles) or more
IAT (12 seconds after engine start)
-10°C (50°F) or more
ECT (12 seconds after engine start)
-10°C (50°F) or more
  1. *2: except Mexico models
  2. *3: for Mexico models

Condition (C)
Time after engine start
30 minutes or more
Accumulated driving time*1
6 minutes and 20 seconds or more
Driving distance after engine start
15 km (9.3 miles) or more
IAT (12 seconds after engine start)
-15°C (5°F) or more
ECT (12 seconds after engine start)
-15°C (5°F) or more

Condition (D)
Time after engine start
40 minutes or more
Accumulated driving time*1
9 minutes and 10 seconds or more
Driving distance after engine start
20 km (12.4 miles) or more

Condition (E)
Time after ECT reaches 60°C (140°F)
10 seconds or more
Transmission fluid temperature (12 seconds after engine start)
100°C (212°F) or more
ECT (12 seconds after engine start)
Less than 35°C (95°F)

TYPICAL MALFUNCTION THRESHOLDS


Condition (A), (B), (C), (D)
ATF temperature
Less than 20°C (68°F)*1
Less than 10°C (50°F)*2
  1. *1: except Mexico models
  2. *2: for Mexico models

Condition (D)
ATF temperature
100°C (212°F) or more

COMPONENT OPERATING RANGE


ATF temperature sensor
Atmospheric temperature to approximately 130°C (266°F)

INSPECTION PROCEDURE

NOTICE:
  1. Perform the universal trip to clear permanent DTCs (YARIS_NCP93 RM000000W770MGX.html).
  2. If P0711 and P2610 are output at the same time, use the Techstream to check that the ATF temperature is in the "Normal Condition".
    If the ATF temperature is in the "Normal Condition", refer to P2610 (Engine Control DTC Chart) (YARIS_NCP93 RM000000PDF0E6X.html).

DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

  1. Warm up the engine.

  2. Turn the ignition switch off.

  3. Connect the Techstream to the DLC3.

  4. Turn the ignition switch to ON.

  5. Turn the Techstream on.

  6. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data.

  7. In accordance with the display on the Techstream, read the Data List.

    Tester Display
    		Measurement Item/Range
    		Normal Condition
    A/T Oil Temperature 1
    		ATF Temperature Sensor Value/
    min.: -40°C (-40°F)
    max.: 215°C (419°F)
    1. After Stall Test; Approximately 80°C (176°F)
    2. Equal to ambient temperature when cold soak

    HINT:
    When DTC P0712 is output and Techstream reading is 150°C (302°F) or more, there is a short circuit.
    When DTC P0713 is output and Techstream reading is -40°C (-40°F), there is an open circuit.
    Measure the resistance between terminal THO1 and the body ground.

    Temperature Displayed
    		Malfunction
    -40°C (-40°F)
    		Open circuit
    150°C (302°F) or more
    		Short circuit
    HINT:
    If a circuit related to the ATF (Automatic Transmission Fluid) temperature sensor becomes open, P0713 is immediately set (within 0.5 seconds).
    It is not necessary to inspect the circuit when P0711 is set.
1.CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  1. Read the DTCs using the Techstream.

    Result
    Result
    		Proceed to
    Only P0711 is output
    		A
    P0711 and other DTCs are output
    		B

    HINT:
    If any DTCs codes besides P0711 are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART (YARIS_NCP93 RM000000W710I1X.html)
A


2.CHECK TRANSMISSION FLUID LEVEL
OK:
Automatic transmission fluid level is correct.


NG
ADD FLUID
OK

REPLACE TRANSMISSION WIRE (ATF TEMPERATURE SENSOR) (YARIS_NCP93 RM00000191I026X.html)