Tribute 4WD L4-2.3L Hybrid (2008)
Canister Purge Control Valve: Description and Operation
EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE
The EVAP canister purge valve is part of the enhanced EVAP system that is controlled by the PCM. This valve controls the flow of vapors (purging)
from the EVAP canister to the intake manifold during various engine operating modes. The EVAP canister purge valve is a normally closed valve. The
electronic EVAP canister purge valve controls the flow of vapors electronically by way of a solenoid, thereby eliminating the need for an electronic
vacuum regulator and vacuum diaphragm. The PCM outputs a variable duty cycle signal (between 0% and 100%) and a variable current (between 0 mA
and 1000 mA) to the solenoid on the EVAP canister purge valve.
