Canada - Emissions - MIL ON/DTC's P0441, P0442/P0446

Bulletin
1289

Issue Date
September 17, 2003

Market
Canada


Title:
M.I.L. "ON" DTC P0441, P0442, AND/OR P0446

Component
ENGINE ELECTRICAL

Model
'00 -'03 Avalon & Solara
'01 -'03 Sienna

TSB REVISION NOTICE:
- January 07, 2005: The Parts Information and Warranty Information tables have been changed. The previous versions of this TSB should be discarded.

INTRODUCTION:
Under certain driving conditions, some 2000 2003 model year Avalon and Solara vehicles, and some 2001-2003 model year Sienna vehicles may exhibit a M.I.L. "ON" with DTC(s) P0440, P0441 and/or "P0446" stored due to an inoperative Canister Closed Valve Vacuum Switching Valve (CCV VSV). The CCV assembly process has been changed to correct this condition.

APPLICABLE VEHICLES:
- 2000 -- 2003 model year Avalon vehicles produced BEFORE the Production Change Effective "VINs" shown below.
- 2001 - 2003 model year Sienna vehicles.
- 2000 - 2003 model year Solara vehicles.







PRODUCTION CHANGE INFORMATION:







WARRANTY INFORMATION:







PARTS INFORMATION:







REQUIRED SSTs:


INSPECTION & REPAIR PROCEDURE:
Test VSV Operation Using Canister Control VSV Active Test on the Toyota Diagnostic Tester

1. Test operation of the Canister Closed Valve VSV using the Toyota Diagnostic Tester Active Test - (see screen flow in Figure 1).







NOTE:
Canister Closed Valve (CCV) VSV is referred to as "CAN CTRL VSV" on the Toyota Diagnostic Tester.







2. Locate Canister Closed Valve (CCV) VSV as shown in Figure 2 (or refer to the Technical Information - System [TIS] and the SFI section of applicable Repair Manual).

3. Using the Diagnostic Tester Active Test, switch the Canister Closed Valve VSV (CAN CTRL VSV) to ON using the arrow keys.
4. Does the Canister Closed Valve VSV make a "click" noise when switched to ON?
YES -> Go to "Test VSV for Vacuum Leaks."
NO -> Go to Step 5.

5. Is the wiring harness connector properly connected to the Canister Closed Valve VSV?
YES -> Go to Step 6.
NO -> Fix the connector, then return to Step 3.

6. Disconnect the wiring harness connector for the Canister Closed Valve VSV.
7. Using a DVOM test at Pin 1 to a known good ground.
Is battery voltage (B+) present at Pin 1 of the Canister Closed Valve VSV connector when the CAN CTRL VSV ACTIVE TEST is switched to ON?

YES -> Go to Step 8.
NO -> Perform diagnosis of power circuit.

8. Using a DVOM test at Pin 2 to a known good ground.
Is there continuity to ground at Pin 2 of the Canister Closed Valve VSV connector when the CAN CTRL VSV ACTIVE TEST is switched to ON?

YES -> Replace the Canister Closed Valve VSV.
NO -> Perform diagnosis of ground circuit.

Test VSV for Vacuum Leaks
1. Locate the vacuum hose going from charcoal canister to the Canister Closed Valve VSV.
2. Remove vacuum hose from the Canister Closed Valve VSV and connect a hand held vacuum pump using a short length of vacuum hose.
3. Apply at least 10 mm Hg vacuum to the VSV (the vacuum should not hold). Is a vacuum held?
YES -> Replace the Canister Closed Valve VSV.
NO -> Go to Step 4.

4. Using the Diagnostic Tester Active Test, switch the Canister Closed Valve VSV (CAN CTRL VSV) to ON using the arrow keys. Apply at least 10 mm Hg vacuum to the VSV. Is a vacuum held for at least 1 minute?
YES -> Go to Step 5.
NO -> Replace the Canister Closed Valve VSV.
5. Disconnect the hand held vacuum pump and reconnect the vacuum hose from the canister to the "Canister Closed Valve VSV."
6. Continue diagnosis of the EVAP system.
Reference TIP1448, "EVAP System Operation Information."

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.