Purge Vsv Monitor - Toyota 2006 PRIUS Manual

e. Purge VSV Monitor
1) After an EVAP leak check is completed, the ECM turns ON (open) the purge VSV with the leak
detection pump actuated, and introduces the atmospheric pressure from the intake manifold to the
canister.
2) If the pressure change at this time is within the normal range, the ECM determines the condition to
be normal.
3) If the pressure is out of the normal range, the ECM will stop the purge VSV monitor and store DTC
P0441 in its memory.
Atmosphere
Leak Detection Pump
Canister Pressure Sensor
Reference Orifice
ON (Open)
Purge VSV
OFF (Close)
ON
Vent Valve
OFF (Vent)
ON
Leak Detection Pump
OFF
Atmospheric Pressure
System Pressure
0.02 in. Leak Pressure
NEW FEATURES - 1NZ-FXE ENGINE
Purge VSV
Atmosphere
(ON)
ECM
Vent
Valve
(ON)
VSV (For Purge Flow Switching Valve)
(OFF)
Normal
P0441

Purge VSV Monitor

27
NF
01REG08Y
275TU50