Toyota Tundra. Manual — part 1739

Fig. 10: Inspecting Fuel Cut-Off Valve And Fill Check Valve
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a

Disconnect the vent line hose from the fuel tank

b

Connect the pressure gauge to the fuel tank

c

Fill the fuel tank with fuel

d

Apply pressure of 4 kPa (41 gf/cm

2

, 0 6 psi) to the vent port of the fuel tank

HINT:

In the condition that the fuel is full, as the float value of the fill check valve is closed and has no
ventilation, it is necessary to check the fuel amount (volume)

e

Remove the fuel tank cap, and check that the pressure inside the tank drops

If pressure does not drop, replace the fuel tank assembly

f

Reconnect the vent line hose to the fuel tank

4

CHECK AIR INLET LINE

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FBE) - Tundra

Fig. 11: Checking Air Inlet Line
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a

Disconnect the air inlet line hose from the charcoal canister

b

Check that there is ventilation in the air inlet line

HINT:

If air cannot flow freely into the air inlet line, repair or replace it

c

Reconnect the air inlet line hose to the charcoal canister

5

INSPECT PRESSURE SENSOR

a

Connect a pressure gauge to the air pressure sensor as shown in the illustration

Fig. 12: Inspecting Pressure Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Connect the Techstream to the DLC3

c

Turn the ignition switch to ON and turn the Techstream ON

d

Enter the following menus:

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FBE) - Tundra

Select: Powertrain/Engine and ECT/Data List/All Data/Air pump pressure (absolute)

e

Check that the pressure displayed on the tester fluctuates when applying pressure to the pressure
sensor with the pressure gauge

OK:

Pressure fluctuates in response to pressure applied with pressure gauge.

HINT:

The tester displays the air pump pressure (AIR PMP PRS (A) and AIR PMP2 PRS (A)) as absolute
pressure

f

Check the power source voltage

1

Disconnect the connector

2

Measure the voltage according to the value(s) in the table below

Standard Voltage

VOLTAGE SPECIFICATION

Fig. 13: Identifying Air Switching Valve
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NOTE:

When applying pressure, make sure that no foreign matter enters the
sensor.

Tester Connection

Condition

Specified Condition

D58-2 (VC) - D58-4 (E2)

Ignition switch ON

4 75 to 5 25 V

D59-2 (VC2) - D59-4 (E22)

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FBE) - Tundra

AIR PUMP

COMPONENTS

Fig. 14: Identifying Air Pump Components With Torque Specifications
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REMOVAL

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FBE) - Tundra