Toyota 1 MZ–FE Manual page 202

EG2–202
EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
DESCRIPTION
To reduce HC emission, evaporated fuel from the fuel tank is routed through the charcoal canister
to the intake manifold for combustion in the cylinders.
OPERATION
Engine
Coolant
TVV
Temp.
Below
CLOSED
402C (1042F)
Above
OPEN
592C (1382F)
Nigh pressure
in tank
High vacuum
in take
1MZ–FE ENGINE
Canister Check Valve
Throttle Valve
Position
Positioned below
CLOSED
port P
Positioned above
OPEN
port P
– EMISSION CONTROL SYSTEMS
Check
Valve in
Tank Cap
OPEN CLOSED CLOSED
CLOSED OPEN OPEN
Evaporated Fuel (HC)
HC from tank is absorbed
into the canister.
HC from canister is led
into air intake chamber.
HC from tank is absorbed
into the canister.
Air is led into the fuel
tank