Toyota Tundra. Manual — part 1633

RESULT CHART

B: Go to step 29

A: Go to Next Step

21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

a. Disconnect the A24 ECM connector.

b. Disconnect the R1 canister pump module connector.

Test Result

Suspected Trouble Area

Proceed to

Operating

1. Wire harness between vent valve and ECM

2. ECM

A

Not operating Vent valve

B

2009 Toyota Tundra

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

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

Page 625

© 2006 Mitchell Repair Information Company, LLC.

Fig. 284: Identifying A24 ECM And R1 Canister Pump Module Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Result

RESISTANCE SPECIFIED CONDITION

2009 Toyota Tundra

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

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

Page 626

© 2006 Mitchell Repair Information Company, LLC.

A: Go to step 34

B: Go to step 31

22. PERFORM ACTIVE TEST USING TECHSTREAM (VACUUM PUMP (ALONE))

a. Turn the ignition switch off.

b. Disconnect the R1 canister pump module connector.

Tester Connection

Condition

Specified

Condition

Suspected Trouble Area

Proceed

to

A24-30 (VPMP) - R1-8
(VGND)

Always

Below 1 ohms

ECM

A

Always

10 kohms or
higher

Wire harness between ECM and
canister pump module

B

2009 Toyota Tundra

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

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

Page 627

© 2006 Mitchell Repair Information Company, LLC.

Fig. 285: Identifying R1 Canister Pump Module Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c. Turn the ignition switch to ON.

d. Enter the following menus: Powertrain/Engine and ECT/Active Test/Activate the Vacuum Pump.

2009 Toyota Tundra

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

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

Page 628

© 2006 Mitchell Repair Information Company, LLC.