Toyota Tundra. Manual — part 1721

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)

Fig. 10: Applying Pressure To Vent Port Of Fuel Tank
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

a

Disconnect the air inlet line hose from the 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

2009 Toyota Tundra

2009 ENG NE Emission Control (2UZ-FE) - Tundra

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

c

Reconnect the air inlet line hose to the canister

5

INSPECT PRESSURE SENSOR

a

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

Fig. 12: Connecting Pressure Gauge To Air Pressure Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Connect the Techstream to the DLC3

c

Turn the ignition switch ON and turn the Techstream ON

d

Enter the following menus:

Techstream - Select: Powertrain / Engine and ECT / Data List / All Data / Air pump pressure
(absolute) and Air pump2 pressure (absolute)

2009 Toyota Tundra

2009 ENG NE Emission Control (2UZ-FE) - Tundra

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 taster 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

Turn the ignition switch ON

3

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

Standard voltage

PRESSURE SENSOR STANDARD VOLTAGE SPECIFICATION

Fig. 13: Checking Power Source Voltage
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

AIR PUMP (FOR BANK 1)

COMPONENTS

NOTE:

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

Tester Connection

Condition

Specified Condition

for Bank 1: 2 (VC) - 4 (E2)

Ignition switch ON

4 75 to 5 25 V

for Bank 2: 2 (VC2) - 4 (E22)

2009 Toyota Tundra

2009 ENG NE Emission Control (2UZ-FE) - Tundra

Fig. 14: Identifying Air Pump Components (Bank 1) With Torque Specifications (1 Of 3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ENG NE Emission Control (2UZ-FE) - Tundra