Toyota Tundra. Manual — part 2803

MONITOR DESCRIPTION

This DTC indicates that there is a problem with the output from the Automatic Transmission Fluid (ATF)
temperature sensor and that the sensor itself is defective. 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 an open or short in the ATF temperature circuit or a fault in 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 ECM interprets this as a fault, and turns on
the MIL and stores the DTC.

When the ATF temperature is 105°C (221°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.

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

All

TYPICAL ENABLING CONDITIONS

Condition (A)

TYPICAL ENABLING CONDITIONS

2. Both (a) and (b) are detected:
(2-trip detection logic)
(a) Engine coolant temperature is
105°C (221°F) or more when the
engine coolant temperature
reaches 60°C (140°F) after 10 sec.
or more

Related DTCs

P0711: ATF temperature sensor/Rationality check

Required sensors/Components

ATF temperature sensor

Frequency of operation

Continuous

Duration

3 sec.

MIL operation

2 driving cycles

Sequence of operation

None

The monitor will run whenever the following DTCs are
not stored

None

ATF temperature sensor "A" circuit

Not circuit malfunction

ECT (Engine Coolant Temperature) sensor circuit

Not circuit malfunction

IAT (Intake Air Temperature) sensor circuit

Not circuit malfunction

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

Condition (B)

TYPICAL ENABLING CONDITIONS TABLE

TYPICAL MALFUNCTION THRESHOLDS

Condition (A)

TYPICAL MALFUNCTION THRESHOLDS TABLE

Condition (B)

TYPICAL MALFUNCTION THRESHOLDS TABLE

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE TABLE

WIRING DIAGRAM

Refer to WIRING DIAGRAM .

INSPECTION PROCEDURE

1. DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and

Duration time from engine start

8 min. and 20 sec. or more

Time after engine start

8 min. and 20 sec.

Driving distance after engine start

3.4 km (2.1 miles) or more

IAT (12 sec. after engine start)

-10°C (14°F) or higher

ECT (12 sec. after engine start)

-10°C (14°F) or higher

Duration time for ECT to reach 60°C (140°F)

10 sec. or more

ATF temperature (12 sec. after engine start)

105°C (221°F) or higher

ECT (12 sec. after engine start)

Below 35°C (95°F)

ATF temperature

Below 20°C (68°F) (ATF temperature = -10°C (14°F) at engine start)
(Conditions vary with ATF temperature at engine start)

ATF temperature

105°C (221°F) or higher

ATF temperature

20°C (68°F) or higher (ATF temperature = -10°C (14°F) at engine
start)
(Conditions vary with ATF temperature at engine start)

ATF temperature

Below 105°C (221°F)

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

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.

a. Warm up the engine.

b. Turn the ignition switch off.

c. Connect the Techstream to the DLC3.

d. Turn the ignition switch to ON.

e. Turn the Techstream on.

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

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

Engine and ECT:

DATA LIST TABLE

HINT:

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

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

Check the temperature displayed on the Techstream in order to check if a malfunction exists.

TEMPERATURE DISPLAYED REFERENCE

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

NOTE:

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.

Tester

Display

Measurement

Item/Range

Normal Condition

Diagnostic Note

A/T Oil

Temperature 1

No. 1 ATF temperature
sensor value/ Min.: -
40°C (-40°F)
Max.: 215°C (419°F)



After stall test:
Approximately 80°C
(176°F)



With engine cold:
Equal to ambient
temperature

If value is -40°C (-40°F) or
215°C (419°F), No. 1 ATF
temperature sensor circuit is
open or shorted

Temperature Displayed Malfunction

-40°C (-40°F)

Open circuit

150°C (302°F) or more Short circuit

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

when P0711 is set.

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

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch to ON.

c. Turn the Techstream on.

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

e. Read the DTCs using the Techstream.

Result

RESULT REFERENCE TABLE

HINT:

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

B: GO TO DTC TABLE (See DIAGNOSTIC TROUBLE CODE TABLE )

A: Go to next step.

2. CHECK TRANSMISSION FLUID LEVEL

a. Check the transmission fluid level (see ADJUSTMENT ).

OK: Automatic transmission fluid level is correct.

NG: ADD FLUID (See ADJUSTMENT )

OK: REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE (See REMOVAL )

P0712, P0713: TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW INPUT;
TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH INPUT

DESCRIPTION

The Automatic Transmission Fluid (ATF) temperature sensor converts the fluid temperature into a resistance
value which is input into the ECM.

Result

Proceed to

Only P0711 is output

A

P0711 and other DTCs are output

B

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra