Emissions - LEVII EVAP System Check for Multiple DTC's

ENGINE
EG048-04
REVISED

Title:
REPAIR MANUAL SUPPLEMENT:
LEV II EVAP SYSTEM CHECK.
DTC P0441, P0442, P0446, P0451,
P0452, P0453, P0455 & P0456

Models:
'03 - '04 4Runner & Tundra, '04 Camry, Highlander, Sienna & Solara

November 12, 2004

TSB REVISION NOTICE:
January 6, 2005: A change has been made to the diagram in section "A. LEV II SYS CHECK Description" ("CCV Stuck Open" changed to "EVAP VSV Stuck Open").

The previous TSB should be discarded.

Introduction

This TSB provides detailed instructions for a new LEV II EVAP System Check function using the Diagnostic Tester.

The LEV II System Check allows the Diagnostic Tester to display the fuel tank vapor pressure as the EVAP VSV and the CCV are operated in a specific six-step pattern. Problems with the EVAP system are quickly isolated by observing the change in vapor pressure during each step.

Once the vehicle condition is corrected, the LEV II System Check can also be used to confirm the repair before the vehicle is returned to the customer.

The inspection procedure using the LEV II System Check (LEV II SYS CHECK) is described in this bulletin. This function is available using a Diagnostic Tester with version 11.0a software (or newer).

Table of Contents

Warranty Information

Applicable Vehicles

^ 2003 - 2004 model year 4Runner vehicles equipped with 2UZ-FE and 1GR-FE engines.

^ 2003 - 2004 model year Tundra vehicles equipped with 5VZ-FE and 2UZ-FE engines.

^ 2004 model year Camry vehicles equipped with 2AZ-FE, 1MZ-FE and 3MZ-FE engines.

^ 2004 model year Highlander and Sienna vehicles equipped with 3MZ-FE engine. 2004 model year Solara vehicles equipped with 2AZ-FE and 3MZ-FE engines.