Toyota Venza: Transmission Fluid Temperature Sensor "A" Performance (P0711)

Toyota Venza Service Manual / U660e Automatic Transmission / Transaxle / Automatic Transaxle System / Transmission Fluid Temperature Sensor "A" Performance (P0711)

DESCRIPTION

The Automatic Transmission Fluid (ATF) temperature sensor converts the fluid temperature into a resistance value for use by the TCM.

The TCM applies a voltage to the temperature sensor through terminal THO1 of the TCM.

The sensor resistance changes with the transmission fluid temperature. As the temperature becomes higher, the sensor resistance decreases.

One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down as the temperature becomes higher.

The TCM calculates the fluid temperature based on the voltage signal.

DTC No.	DTC Detection Condition	Trouble Area
P0711	Either condition is met: (2-trip detection logic) (a) Certain monitor enabling conditions are met and the ATF temperature is below 20°C (68°F) (b) Certain monitor enabling conditions are met and the ATF temperature is 110°C (230°F) or higher	ATF temperature sensor

DTC No.

DTC Detection Condition

Trouble Area

P0711

Either condition is met:

(2-trip detection logic)

(a) Certain monitor enabling conditions are met and the ATF temperature is below 20°C (68°F)

(b) Certain monitor enabling conditions are met and the ATF temperature is 110°C (230°F) or higher

ATF temperature sensor

MONITOR DESCRIPTION

This DTC indicates that there is a problem with output signals from the automatic transmission fluid (ATF) temperature sensor and that the sensor itself is defective. The ATF temperature sensor converts the ATF temperature into an electrical resistance value. Based on the resistance, the TCM determines the ATF temperature and detects an open or short 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) after running the vehicle for a certain period, the TCM interprets this as a fault turns on the MIL, and stores the DTC.

MONITOR STRATEGY

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

TYPICAL ENABLING CONDITIONS

ALL:

The monitor will run whenever this DTC is not present. (Not circuit malfunction)	P0712, P0713 (ATF temperature sensor circuit (TFT sensor)) P0115, P0117, P0118 (ECT sensor circuit) P0112, P0113 (IAT sensor circuit) P0715, P0717 (Turbine speed sensor circuit) P0791, P0793 (Intermediate shaft speed sensor circuit) P0748 (Shift solenoid valve SL1 circuit) P0778 (Shift solenoid valve SL2 circuit) P0798 (Shift solenoid valve SL3 circuit) P2810 (Shift solenoid valve SL4 circuit) P0327, P0328, P0332, P0333 (KCS sensor circuit) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P060A, P060B, P060D, P060E, P0657, P1607, P2102, P2103, P2111, P2112, P2118, P2119, P2135 ((ETCS) Electronic throttle control system) U0100 (CAN communication system) P2610 (Soak timer circuit)
TFT (Transmission fluid temperature) sensor circuit	No circuit malfunction
ECT (Engine coolant temperature) sensor circuit	No circuit malfunction
IAT (Intake air temperature) sensor circuit	No circuit malfunction
Turbine speed sensor circuit	No circuit malfunction
Intermediate shaft speed sensor	No circuit malfunction
Shift solenoid valve SL1 circuit	No circuit malfunction
Shift solenoid valve SL2 circuit	No circuit malfunction
Shift solenoid valve SL3 circuit	No circuit malfunction
Shift solenoid valve SL4 circuit	No circuit malfunction
(KCS) Knock control sensor circuit	No circuit malfunction
Soak timer circuit	No circuit malfunction
(ETCS) Electronic throttle control system	Not system down
CAN communication system	Not system down
Engine	Starting
Time after engine start	12 sec. or more
ECT (Engine coolant temperature)	-15°C (5°F) or more

Condition A:

Time after engine start except for continuing shift position "N" or "P" *2	10 min. or more
Driving distance after engine start *3	5 km (3.1 miles) or more
IAT *4	15°C (59°F) or more
ECT (12 sec. after engine start)	15°C (59°F) or more
Soak time	5 hours or more
Accumulated driving time *1	115 sec. or more

Condition B:

Time after engine start except for continuing shift position "N" or "P" *2	18 min. and 20 sec. or more
Driving distance after engine start *3	8 km (5 miles) or more
IAT *4	-10°C (14°F) or more
ECT (12 sec. after engine start)	-10°C (14°F) or more
Accumulated driving time *1	200 sec. or more

Condition C:

Time after engine start except for continuing shift position "N" or "P" *2	30 min. or more
Driving distance after engine start *3	15 km (9.3 miles) or more
IAT *4	-15°C (5°F) or more
ECT (12 sec. after engine start)	-15°C (5°F) or more
Accumulated driving time *1	400 sec. or more

Condition D:

Time after engine start except for continuing shift position "N" or "P" *2	40 min. or more
Driving distance after engine start *3	20 km (12.4 miles) or more
Accumulated driving time *1	550 sec. or more

Condition E:

Time after ECT reaches 60°C (140°F)	10 sec. or more
TFT (12 sec. after engine start)	110°C (230°F) or more
ECT (12 sec. after engine start)	35°C (95°F) or less

HINT:

*1: Following conditions are met

Engine speed - 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	Starting
However, accumulated driving time is cleared
When following condition met
Duration time from shifting to "N" or "P"	300 sec. or more

*2: Time after engine start is cleared when following condition met

Duration time from shifting to "N" or "P"

300 sec. or more

*3: Driving distance is cleared when following condition met

Duration time from shifting to "N" or "P"

300 sec. or more

*4: IAT is measured when either of following conditions met

12 seconds after engine start
Duration time from shifting to "N" or "P"	300 sec. or more

TYPICAL MALFUNCTION THRESHOLDS

Condition A, B, C and D:

TFT	Less than 20°C (68°F) (THO = -10°C (14°F) at engine start) (Conditions vary with THO at engine)

Condition E:

TFT	110°C (230°F) or more

COMPONENT OPERATING RANGE

TFT	Atmospheric temperature - approx. 130°C (266°F)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Perform the universal trip to clear permanent DTCs (See page ).

If DTCs P0711 and P2610 are output simultaneously, confirm that the ATF temperature is as specified in "Normal Condition" using the Techstream first. When the ATF temperature is as specified in "Normal Condition", perform troubleshooting for DTC P2610 (See page ).

In the table below, the value listed under "Normal Condition" are reference values.

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.

Warm up the engine.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / ECT / Data List.

According to the display on the Techstream, read the Data List. TCM

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
A/T Oil Temperature 1	ATF temperature sensor value/ Min.: -40°C (-40°F) Max.: 215°C (419°F)	After stall speed test: Approximately 80°C (176°F) While engine is cold: Equal to ambient temperature	If value is -40°C (-40°F) or 150°C (302°F), ATF temperature sensor circuit is open or short circuited

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

A/T Oil Temperature 1

ATF temperature sensor value/

Min.: -40°C (-40°F)

Max.: 215°C (419°F)

After stall speed test: Approximately 80°C (176°F)
While engine is cold:
Equal to ambient temperature

If value is -40°C (-40°F) or 150°C (302°F), ATF temperature sensor circuit is open or short circuited

HINT:

When DTC P0712 is output and the Techstream indicates 150°C (302°F) or more, there is a short circuit.

When DTC P0713 is output and the Techstream indicates -40°C (-40°F), there is an open circuit.

Measure the resistance between terminal THO1 (OT) and 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 temperature sensor becomes open, P0713 is immediately set (in 0.5 seconds). When P0713 is set, P0711 cannot be detected.

It is not necessary to inspect the circuit when P0711 is set.

PROCEDURE

1.	CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / ECT / Trouble Codes.

(e) Read the DTCs using the Techstream.

Display (DTC Output)	Proceed to
Only P0711 is output	A
P0711 and other DTC	B

HINT:

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

GO TO DTC CHART

2.	CHECK TRANSMISSION FLUID LEVEL

(a) Check the transmission fluid level (See page ).

OK:

Automatic transmission fluid level is correct.

REPLACE ATF TEMPERATURE SENSOR ASSEMBLY

ADJUST FLUID LEVEL

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