Toyota Tundra. Manual — part 1543

Fig. 102: Vehicle Speed Driving Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher [A].

b. Stop the engine.

c. Connect the Techstream to the DLC3.

d. Turn the ignition switch to ON.

e. Turn the Techstream to on.

f. Clear the DTC (See DTC CHECK/CLEAR ).

HINT:

Even if no DTCs are stored, perform the DTC clear operation to start alcohol concentration
learning.

g. Start the engine.

HINT:

After clearing the DTCs, the engine may become difficult to start if the concentration of alcohol in
the fuel is high.

Therefore, it may be necessary to crank the engine a few times before it starts.

h. Drive the vehicle at 32 km/h (20 mph) or more and maintain a constant speed for 2 minutes or more

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

[B].

HINT:

Make sure that the Data List "Alcohol Density Learning" is "Compl".

i. Drive the vehicle at 60 to 120 km/h (40 to 75 mph) and maintain a constant speed for at least 10

minutes [C].

j. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more.

Perform this 3 times [D].

k. Turn the Techstream on.

l. Enter the following menus: Powertrain/Engine and ECT/Utility/All Readiness.

m. Enter the following DTCs: P0136, P0137, P0138, P0156, P0157 and P0158.

n. Check that the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive

pattern increasing the vehicle speed and using the second gear to decelerate the vehicle [D].

OK: No DTC is output.

NG: REPLACE AIR FUEL RATIO SENSOR (See REMOVAL )

OK: REPAIR COMPLETE

22. REPLACE AIR FUEL RATIO SENSOR

a. Replace the air fuel ratio sensor (see REMOVAL ).

23. PERFORM CONFIRMATION DRIVING PATTERN

CAUTION: Perform this drive pattern on a level road as much as possible

and strictly observe the posted speed limits and traffic laws
while driving.

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

Fig. 103: Vehicle Speed Driving Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher [A].

b. Stop the engine.

c. Connect the Techstream to the DLC3.

d. Turn the ignition switch to ON.

e. Turn the Techstream to on.

f. Clear the DTC (See DTC CHECK/CLEAR ).

HINT:

Even if no DTCs are stored, perform the DTC clear operation to start alcohol concentration
learning.

g. Start the engine.

HINT:

After clearing the DTCs, the engine may become difficult to start if the concentration of alcohol in
the fuel is high.

Therefore, it may be necessary to crank the engine a few times before it starts.

h. Drive the vehicle at 32 km/h (20 mph) or more and maintain a constant speed for 2 minutes or more

[B].

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

HINT:

Make sure that the Data List "Alcohol Density Learning" is "Compl".

i. Drive the vehicle at 60 to 120 km/h (40 to 75 mph) and maintain a constant speed for at least 10

minutes [C].

j. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more.

Perform this 3 times [D].

k. Enter the following menus: Powertrain/Engine and ECT/Utility/All Readiness.

l. Enter the following DTCs: P0136, P0137, P0138, P0156, P0157 and P0158.

m. Check that the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive

pattern increasing the vehicle speed and using the second gear to decelerate the vehicle [D].

OK: No DTC is output.

NG: REPLACE HEATED OXYGEN SENSOR (See REMOVAL )

OK: REPAIR COMPLETE

24. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN

SENSOR)

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/Data List/A/F Control System/O2S B1 S2

or O2S B2 S2.

e. After warming up the engine, run the engine at an engine speed of 2500 RPM for 3 minutes.

f. Engine is idling.

g. Depress the accelerator pedal quickly until the engine speed reaches 2500 RPM 3 times.

Result

RESULT REFERENCE

B: Go to step 27

CAUTION: Perform this drive pattern on a level road as much as possible

and strictly observe the posted speed limits and traffic laws
while driving.

Result

Proceed to

1.0 V or higher

A

Below 1.0 V

B

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra