Purge Control Solenoid Valve (PCSV): Description
Purge Control Solenoid Valve (PCSV) controls evaporative gas gathered in canister. It is divided into duty type controlled by ECU and ON/OFF type controlled by vacuum in intake manifold and ECU.
PCSV is closed when water temperature is low or engine is idle and is open when water temperature is in normal temperature. When it is open, evaporative gas in canister is flowed into the intake manifold.
The PCSV has a duty cycle. PCSV duty is 0% when it is wholly closed, and 100% when it is wholly open (Generally Idle: 1 ~ 3%, Max: 92%).