Toyota Tundra. Manual — part 2840

TYPICAL ENABLING CONDITIONS TABLE

OFF malfunction (A)

TYPICAL ENABLING CONDITIONS TABLE

OFF malfunction (B)

TYPICAL ENABLING CONDITIONS TABLE

ON malfunction

TYPICAL ENABLING CONDITIONS TABLE

TYPICAL MALFUNCTION THRESHOLDS

Vehicle speed

25 km/h (15.5 MPH) or more

Shift solenoid valve S1 circuit

Not circuit off malfunction

Shift solenoid valve S3 circuit

Not circuit on malfunction

Shift solenoid valve S4 circuit

Not circuit off malfunction

Shift solenoid valve SL2 circuit

Not circuit on malfunction

1 - 2 shift valve

Not malfunction

Sequence valve

Not malfunction

Transfer position

HIGH*

HINT:
*: Following conditions met

Vehicle speed sensor circuit

Not circuit malfunction

Output shaft speed sensor circuit

Not circuit malfunction

Transfer output speed

143 RPM or more

Transfer input speed/Transfer output speed (NO/NOtf)

0.9 or more, and less than 1.1

ECM lock-up command

ON (SLU pressure: 513 kPa (5.2 kgf/cm

2

, 74 psi) or higher)

Duration time from lock-up on command 3 sec. or more
Vehicle speed

Less than 120 km/h (74.6 MPH)

ECM selected gear

2nd

Vehicle speed

2 km/h (1.2 MPH) or more

Output speed

2nd --> 1st down-shift point or more

Throttle valve opening angle

9% or more at 2000 RPM (Conditions vary with engine speed)

ECM lock-up command

OFF (SLU pressure: Below 4 kPa (0.04 kgf/cm

2

, 0.6 psi))

Duration time from lock-up off
command

3 sec. or more

Throttle valve opening angle

6% or more

Vehicle speed

Less than 120 km/h (74.6 MPH) at 2nd gear (Varies with ECM
selected gear)

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

[OFF malfunction]

When both conditions below are met: OFF malfunction (A) and (B)

OFF malfunction (A)

TYPICAL MALFUNCTION THRESHOLDS TABLE

OFF malfunction (B)

TYPICAL MALFUNCTION THRESHOLDS TABLE

[ON malfunction]

2 detections are necessary per driving cycle:

1st detection: temporary flag ON

2nd detection: pending fault code ON

Vehicle speed must be less than 10 km/h (6.2 MPH) once before 2nd detection.

TYPICAL MALFUNCTION THRESHOLDS TABLE

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE TABLE

INSPECTION PROCEDURE

1. ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be
operated without removing any parts. This non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests
early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while
performing Active Tests.

a. Warm up the engine.

b. Turn the ignition switch off.

Engine speed - Turbine speed (NE - NT)

70 RPM or more

Turbine speed/Output speed (NT/NO)

Less than 3.11 or more than 7.58

Engine speed - Turbine speed (NE - NT)

Less than 35 RPM

Speed sensor (NT)

Input speed is equal to engine speed when lock-up ON.

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

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/Active Test.

g. According to the display on the Techstream, perform the Active Test.

Engine and ECT:

ACTIVE TEST TABLE

HINT:



This test can be conducted when the vehicle speed is 60 km/h (37 MPH) or more.



Perform this test while driving in 5th or 6th gear.

h. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

Fig. 111: Engine Speed Timing Table
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:

Tester

Display

Test Part

Control

Range

Diagnostic Note

Activate the

Lock Up

Control shift solenoid SLU to set
automatic transmission to lock-up
condition

ON or

OFF

Possible to check shift solenoid
valve SLU operation [Vehicle
Condition]



Throttle valve opening angle:
Less than 35%



Vehicle speed: 60 km/h (37
MPH) or more

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra



When changing the accelerator pedal opening angle while driving, if the engine speed does
not change, lock-up is on.



Slowly release the accelerator pedal in order to decelerate, but do not fully release the pedal.
(Fully releasing the pedal will close the throttle valve and lock-up may be turned off
automatically.)

1. CHECK DTC OUTPUT (IN ADDITION TO DTC P2757)

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 P2757 are output, perform troubleshooting for those DTCs first.

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

A: Go to next step.

2. INSPECT SHIFT SOLENOID VALVE SLU

a. Remove shift solenoid valve SLU.

b. Measure the resistance according to the value (s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

c. Connect the battery's positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to

terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an
operating noise.

OK: Valve moves and makes an operating noise.

Result

Proceed to

Only P2757 is output

A

P2757 and other DTCs are output

B

Tester Connection Condition Specified Condition

1 - 2

20°C (68°F)

5.0 to 5.6 ohms

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra