Toyota Tundra. Manual — part 1266

Fig. 255: Connecting An EVAP Tester To Canister Pump Module With Adapter

a. Disconnect the vent hose.

b. Connect an EVAP tester to the canister pump module with the adapter.

c. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).

d. Apply soapy water to the piping and connecting parts of the EVAP system.

e. Look for areas where bubbles appear. This indicates the leak point.

f. Repair or replace the leak point.

HINT:

Disconnect the hose between the canister and the fuel tank from the canister. Block the canister
side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of
causing fuel leaks.

NEXT : Go to step 36

29. REPLACE CANISTER ASSEMBLY

a. Replace the canister assembly. (See CANISTER ).

NOTE:

When replacing the canister, check the canister pump module
interior and related pipes for water, fuel and other liquids. If liquids
are present, check for disconnections and/or cracks in the following:
1) the pipe from the air inlet port to the canister pump module; 2) the
canister filter; and 3) the fuel tank vent hose.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 256: Identifying Inspection Area Of Canister Assembly

NEXT : Go to step 36

30. REPLACE PURGE VSV

a. Disconnect the connector and the hoses from the purge VSV.

b. Remove the purge VSV.

c. Install a new purge VSV.

d. Reconnect the connector and hoses.

NEXT : Go to step 36

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 257: Identifying Purge VSV

31. REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT : Go to step 36

32. REPLACE PURGE LINE HOSE (INTAKE MANIFOLD - PURGE VSV)

NEXT : Go to step 36

33. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)

a. Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the

intake manifold.

NEXT : Go to step 36

34. REPLACE ECM

a. Replace the ECM (See REMOVAL ).

NEXT : Go to step 36

35. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS

a. Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle

was brought in.

NEXT : Go to step 36

36. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)

NOTE:



The Evaporative System Check (Automatic Mode) consists of five
steps performed automatically by the Techstream. It takes a
maximum of approximately 18 minutes.



Do not perform the Evaporative System Check when the fuel tank is
more than 90% full because the cut-off valve may be closed. If the
cut-off valve is closed, the fuel tank leak check is not possible.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

a. Clear DTCs (See DTC CHECK/CLEAR ).

b. Enter the following menus: Powertrain/Engine and ECT/Utility/Evaporative System

Check/Automatic Mode.

c. After the Evaporative System Check is completed, check for pending DTCs by entering the

following menus: Powertrain/Engine and ECT/Trouble Codes/Pending.

HINT:

If no pending DTCs are found, the repair has been successfully completed.

NEXT : COMPLETED

CONFIRMATION DRIVING PATTERN

HINT:

After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation and Purge Flow Monitor
Confirmation described below.

1. Key-off monitor confirmation

a. Preconditions

The monitor will not run unless:



The vehicle has been driven for 10 minutes or more (in a city area or on a freeway)



The fuel tank is less than 90% full



The altitude is less than 2432 m (8000 ft)



The Engine Coolant Temperature (ECT) is between 4.4°C and 35°C (40°F and 95°F)



The Intake Air Temperature (IAT) is between 4.4°C and 35°C (40°F and 95°F)



The vehicle remains stationary (the vehicle speed is 0 mph [0 km/h])

b. Monitor Conditions

1. Allow the engine to idle for at least 5 minutes.

2. Turn the ignition switch OFF and wait for 6 hours (8 or 10.5 hours).

HINT:

Do not start the engine until checking Monitor Status. If the engine is started, the steps
described above must be repeated.



Do not run the engine during this operation.



When the temperature of the fuel is 35°C (95°F) or more, a large
amount of vapor forms and any check results become inaccurate.
When performing an Evaporative System Check, keep the
temperature below 35°C (95°F).

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra