Toyota Tundra. Manual — part 1706

Fig. 10: Inspecting Fuel Cut Off Valve And Fill Check Valve
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

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

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

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra

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 tester 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)

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

NOTE:

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

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra

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

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

AIR PUMP

COMPONENTS

Tester Connection

Condition

Specified Condition

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

Ignition switch ON

4 25 to 5 2S V

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

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra

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

REMOVAL

1

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTE:



Some systems need to be initialized after the cable is reconnected
(see INITIALIZATION ).

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra