Toyota Tundra. Manual — part 1444

Fig. 264: Identifying Hose To Intake Manifold From Purge VSV

Result

RESULT REFERENCE

B : Go to step 25

A : Go to Next Step

16. INSPECT PURGE VSV

a. Remove the purge VSV.

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

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

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 265: Applying Battery Voltage To Terminals Of Purge VSV

Result

RESULT REFERENCE

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.

b. Turn the ignition switch to ON.

c. Measure the voltage between terminal 2 of the purge VSV connector and the body ground.

Test Result Suspected Trouble Area Proceed To
Air flows

-

A

No air flow

Purge VSV

B

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 266: Identifying D29 Purge VSV Connector

Result

RESULT REFERENCE

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.

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

STANDARD RESISTANCE SPECIFICATION

OK : Go to step 34

NG : Go to step 31

Test Result

Suspected Trouble Area

Proceed To

11 to 14 V

Normal

A

Other than result above Wire harness or connectors between purge VSV and ECM

B

Tester Connection

Condition Specified Condition

D74-63 (PRG) - D29-1

Always

Below 1 ohms

D74-63 (PRG) - Body ground Always

10 kohms or higher

D29-2 - Body ground

Always

10 kohms or higher

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 267: Identifying D74 ECM & D29 Purge VSV Connectors

19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)

a. Turn the ignition switch off.

b. Disconnect the R1 canister pump module connector.

c. Turn the ignition switch to ON.

d. Measure the voltage between VLVB terminal of the canister pump module connector and the body

ground.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra