EVAP Vent Valve

DESCRIPTION
The EVAP Vent Valve (3), is used by the PCM to monitor EVAP canister purge solenoid operation and purge system integrity. The EVAP Vent Valve should be closed to ground with no vacuum present (0% [1][2]EVAP Purge PWM). With EVAP Purge PWM at 25% or greater, the EVAP Vacuum Switch should open.