Toyota Tundra. Manual — part 1632

Fig. 281: Identifying D74 ECM And D29 Purge VSV Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

RESISTANCE SPECIFIED CONDITIONS

OK: Go to step 34

NG: Go to step 31

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

a. Turn the ignition switch off.

b. Disconnect the R1 canister pump module connector.

Tester Connection

Condition Specified Condition

D74-63 (PRG) - D29-2

Always

Below 1 ohms

D74-63 (PRG) - Body ground Always

10 kohms or higher

D29-1 - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

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

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

Page 621

© 2006 Mitchell Repair Information Company, LLC.

Fig. 282: Identifying R1 Canister Pump Module Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c. Turn the ignition switch to ON.

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

Result

VOLTAGE SPECIFIED CONDITION

Tester Connection

Switch

Specified

Suspected Trouble Area

Proceed

2009 Toyota Tundra

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

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

Page 622

© 2006 Mitchell Repair Information Company, LLC.

B: Go to step 31

A: Go to Next Step

20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

a. Turn the ignition switch off.

b. Disconnect the R1 canister pump module connector.

c. Apply the battery voltage to 9 (VLVB) and 8 (VGND) terminals of the canister pump module.

Condition

Condition

to

R1-9 (VLVB) -
Body ground

Ignition switch
ON

11 to 14 V

1. Wire harness between vent

valve and ECM

2. Vent valve

3. ECM

A

Ignition switch
ON

Below 3 V

Power source wire harness of
vent valve

B

2009 Toyota Tundra

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

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

Page 623

© 2006 Mitchell Repair Information Company, LLC.

Fig. 283: Identifying 9 (VLVB) And 8 (VGND) Terminals Of Canister Pump Module
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d. Touch the canister pump module to confirm the vent valve operation.

Result

2009 Toyota Tundra

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

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

Page 624

© 2006 Mitchell Repair Information Company, LLC.