Function Of Main Components - Toyota 2006 PRIUS Manual

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Function of Main Components

Component
Canister
Fresh Air Line
Canister C i t
Pump
Module Module
Purge VSV
Canister Filter
VSV (For Purge Flow Switching Valve)
Fuel Tank Pressure Sensor
ECM
NEW FEATURES - 1NZ-FXE ENGINE
Contains activated charcoal to absorb the vapor gas that
is created in the fuel tank.
Fresh air goes into the canister and the cleaned drain air
goes out into the atmosphere.
Opens and closes the fresh air line in accordance with the
Vent Valve
signals from the ECM.
Leak Detection Applies vacuum pressure in the EVAP control system in
Pump accordance with the signals from the ECM.
Canister Detects the pressure in the EVAP control system and
Pressure Sensor sends the signals to the ECM.
Opens in accordance with the signals from the ECM when
the system is purging, in order to send the vapor gas that
was absorbed by the canister into the intake manifold.
During the system monitoring mode, this valve controls
the introduction of the vacuum into the fuel tank.
Prevents dust and debris in the fresh air from entering the
system.
Switches the passages from the charcoal canister to the
purge line and from the fuel tank to the purge line.
Detects the pressure in the fuel tank while the engine is
running, and sends the resulting signal to the ECM.
Controls the canister pump module and the purge VSV in
accordance with the signals from various sensors, in order
to achieve a purge volume that suits the driving
conditions. In addition, the ECM monitors the system for
any leakage and outputs a DTC if a malfunction is found.
Function