Toyota Tundra. Manual — part 1630

9. PERFORM EVAP SYSTEM CHECK (STEP 4/5)

Fig. 273: EVAP Pressure In Step 4/5
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Check the EVAP pressure in step 4/5.

Result

TEST RESULT

B: Go to step 15

C: Go to step 12

A: Go to Next Step

10. PERFORM EVAP SYSTEM CHECK (STEP 5/5)

DTCs

(1)

Test Result

Suspected Trouble Area

Proceed

to

-

EVAP pressure increases by 0.3 kPa-g (2.25
mmHg-g) or more within 10 seconds of
proceeding from step 3/5 to step 4/5

Not yet determined

A

P0441

EVAP pressure increases by 0.3 kPa-g (2.25
mmHg-g) or more within 10 seconds of
proceeding from step 3/5 to step 4/5

Problems in purge line
between purge VSV and
intake manifold

B

P0441

Variation in EVAP pressure less than 0.3 kPa-g
(2.25 mmHg-g) for 10 seconds, after proceeding
from step 3/5 to step 4/5

Purge VSV stuck closed

C

(1)

These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the
"CONFIRM DTC" procedures above.

2009 Toyota Tundra

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

Saturday, June 19, 2010 7:34:47 PM

Page 613

© 2006 Mitchell Repair Information Company, LLC.

Fig. 274: EVAP Pressure In Step 5/5
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Check the EVAP pressure in step 5/5.

b. Compare the EVAP pressure in step 3/5 and the second reference pressure (step 5/5).

Result

TEST RESULT

A: Go to step 35

B: Go to step 12

11. PERFORM EVAP SYSTEM CHECK (STEP 3/5)

DTCs

(1)

Test Result

Suspected Trouble Area

Proceed

to

-

EVAP pressure (step 3/5) lower than
second reference pressure (step 5/5)

Not yet determined (no leakage
from EVAP system)

A

P0441 and

P0455

EVAP pressure (step 3/5) higher than
[second reference pressure (step 5/5) x 0.2]



Purge VSV stuck open



EVAP gross leak

B

P0456

EVAP pressure (step 3/5) higher than
second reference pressure (step 5/5)

EVAP small leak

B

(1)

These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the
"CONFIRM DTC" procedures above.

2009 Toyota Tundra

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

Saturday, June 19, 2010 7:34:47 PM

Page 614

© 2006 Mitchell Repair Information Company, LLC.

Fig. 275: EVAP Pressure In Step 3/5
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Check the EVAP pressure in step 3/5.

Result

TEST RESULT

HINT:

The first reference pressure is the value determined in step 2/5.

A: Go to step 29

B: Go to step 22

12. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV)

a. Enter the following menus: Powertrain/Engine and ECT/Active Test/Activate the VSV for Evap

Control.

b. Disconnect the hose (connected to the canister) from the purge VSV.

c. Start the engine.

d. Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF).

DTCs

(1)

Test Result

Suspected Trouble Area

Proceed

to

P043F

EVAP pressure less than [reference pressure]
measured at 2/5

Reference orifice high-
flow

A

P2401

EVAP pressure almost same as [reference
pressure] measured at 2/5

Leak detection pump
stuck OFF

B

(1)

These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the
"CONFIRM DTC" procedures above.

2009 Toyota Tundra

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

Saturday, June 19, 2010 7:34:47 PM

Page 615

© 2006 Mitchell Repair Information Company, LLC.

Fig. 276: Checking Purge VSV Suction
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e. Use your finger to confirm that the purge VSV has no suction.

f. Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON).

g. Use your finger to confirm that the purge VSV has suction.

Result

TEST RESULT

B: Go to step 14

C: Go to step 15

A: Go to Next Step

13. CHECK FUEL TANK CAP ASSEMBLY

a. Check that the fuel tank cap is correctly installed and confirm the fuel tank cap meets OEM

specifications.

b. Tighten the fuel tank cap until a few click sounds are heard.

HINT:

If an EVAP tester is available, check the fuel tank cap using the tester.

Test Result

Suspected Trouble Area

Proceed

to

No suction when purge VSV turned OFF,
and suction applied when turned ON

Purge VSV normal

A

Suction applied when purge VSV turned
OFF

Purge VSV stuck open

B

No suction when purge VSV turned ON



Purge VSV stuck closed



Problems with purge line between
purge VSV and intake manifold

C

2009 Toyota Tundra

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

Saturday, June 19, 2010 7:34:47 PM

Page 616

© 2006 Mitchell Repair Information Company, LLC.