Toyota Supports ASE Certification
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REPAIR MANUAL SUPPLEMENT:
LEV II EVAP SYSTEM CHECK -
DTC P0441, P0442, P0446, P0451,
P0452, P0453, P0455 & P0456
’03 -- ’04 4Runner & Tundra, ’04 Camry, Highlander,
Sienna & Solara
November 12, 2004
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).
S 2003 -- 2004 model year 4Runner vehicles equipped with 2UZ--FE and
S 2003 -- 2004 model year Tundra vehicles equipped with 5VZ--FE and
S 2004 model year Camry vehicles equipped with 2AZ--FE, 1MZ--FE and
S 2004 model year Highlander and Sienna vehicles equipped with 3MZ--FE engine.
S 2004 model year Solara vehicles equipped with 2AZ--FE and 3MZ--FE engines.
SECTION TITLE PAGE
A LEV II SYS CHECK Description 3
B DTC Check 4
C LEV II SYS CHECK (Diagnostic Tester System Test) 5
D Air Inlet Restriction Inspection 13
E EVAP VSV Stuck--Open Inspection 16
F Leak Check or No Vacuum Drawn on System Inspection 17
G CCV Diagnostics 22
H EVAP VSV Diagnostics 25
I EVAP System Description 30
J EVAP System DTC Descriptions 33
K EVAP Monitor Description 35
L OBD II EVAP Monitor Specifications 39
OP CODE DESCRIPTION TIME OFP T1 T2
N/A Not Applicable to Warranty – – – –