Maxima GLE V6-2968cc 3.0L DOHC MFI (VQ30DE) (1997)
Vacuum Cut Valve Bypass Valve: Description and Operation
COMPONENT DESCRIPTION
The vacuum cut valve and vacuum cut valve bypass valve are installed in parallel on the EVAP purge line between the fuel tank and the EVAP
canister.
The vacuum cut valve prevents the intake manifold vacuum from being applied to the fuel tank.
The vacuum cut valve bypass valve is a solenoid type valve and generally remains closed. It opens only for OBD.
The vacuum cut valve bypass valve responds to signals from the ECM. When the ECM sends an ON (ground) signal the valve is opened. The vacuum
cut valve is then bypassed to apply intake manifold vacuum to the fuel tank.