Toyota Tundra. Manual — part 1631

1. Remove the fuel tank cap and install it onto a fuel tank cap adapter.

2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa

(24 to 28 mmHg) using an EVAP tester pump.

3. Seal the adapter and wait for 2 minutes.

4. Check the pressure. If the pressure is 2 kPa (15 mmHg) or more, the fuel tank cap is normal.

Result

TEST RESULT

A: Go to step 28

B: Go to step 26

C: Go to step 27

14. INSPECT PURGE VSV

a. Turn the ignition switch off.

b. Disconnect the D29 purge VSV connector.

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

d. Start the engine.

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

Test Result

Suspected Trouble Area

Proceed

to

Fuel tank cap correctly
installed

-

A

Fuel tank cap loose



Fuel tank cap improperly installed



Defective fuel tank cap



Fuel tank cap does not meet OEM
specifications

B

Defective fuel tank cap

-

B

No fuel tank cap

-

C

2009 Toyota Tundra

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

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

Page 617

© 2006 Mitchell Repair Information Company, LLC.

Fig. 277: Checking Purge VSV (No Suction)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Result

TEST RESULT

A: Go to step 34

B: Go to step 30

15. CHECK PURGE LINE (PURGE VSV - INTAKE MANIFOLD)

a. Disconnect the hose (connected to the intake manifold) from the purge VSV.

b. Start the engine.

c. Use your finger to confirm that the hose has suction.

Fig. 278: Checking Purge VSV Suction
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Result

TEST RESULT

B: Go to step 25

A: Go to Next Step

16. INSPECT PURGE VSV

Test Result Suspected Trouble Area Proceed to

No suction

ECM

A

Suction applied Purge VSV

B

Test Result

Suspected Trouble Area

Proceed to

Suction applied Purge line between purge VSV and intake manifold normal

A

No suction



Intake manifold port



Purge line between purge VSV and intake manifold

B

2009 Toyota Tundra

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

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

Page 618

© 2006 Mitchell Repair Information Company, LLC.

a. Remove the purge VSV (see REMOVAL ).

b. Apply the battery voltage to the terminals of the purge VSV.

Fig. 279: Inspecting Purge VSV
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c. Using an air gun, confirm that air flows from port A to port B.

Result

TEST RESULT

B: Go to step 30

A: Go to Next Step

17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV)

a. Disconnect the D29 purge VSV connector.

Test Result Suspected Trouble Area Proceed to
Air flows

-

A

No air flow

Purge VSV

B

2009 Toyota Tundra

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

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

Page 619

© 2006 Mitchell Repair Information Company, LLC.

Fig. 280: Identifying D29 Purge VSV Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Turn the ignition switch to ON.

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

Result

VOLTAGE REFERENCE CHART

B: Go to step 31

A: Go to Next Step

18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

a. Disconnect the D74 ECM connector and the D29 purge VSV connectors.

Tester

Connection

Switch

Condition

Specified

Condition

Suspected Trouble Area

Proceed

to

D29-1 - Body
ground

Ignition switch
ON

11 to 14 V

Normal

A

Ignition switch
ON

Other than
condition above

Wire harness or connectors
between purge VSV and battery

B

2009 Toyota Tundra

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

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

Page 620

© 2006 Mitchell Repair Information Company, LLC.