Voyager V6-3.3L VIN G Flex Fuel (2000)
Evaporative Emission Control Canister: Description and Operation
Fig. 1 Evaporative Canister
The canister is attached to the frame under the driver's seat.
All vehicles use a sealed, maintenance free, evaporative (charcoal) canister.
Fuel tank vapor vents into the canister. The canister temporarily holds the fuel vapors until intake manifold vacuum draws them into the combustion
chamber. The canister proportional purge solenoid allows the canister to be purged at predetermined intervals and engine conditions.
All vehicles use a proportional purge solenoid. The solenoid regulates the rate of vapor flow from the EVAP canister to the throttle body. The PCM
operates the solenoid.
During the cold start warm-up period and the hot start time delay, the PCM does not energize the solenoid. When de-energized, no vapors are purged.
The proportional purge solenoid operates at a frequency of 200 Hz and is controlled by an engine controller circuit that senses the current being applied
to the proportional purge solenoid and then adjusts that current to achieve the desired purge flow. The proportional purge solenoid controls the purge
rate of fuel vapors from the vapor canister and fuel tank to the engine intake manifold.
