Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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Leak Detection Valve: Description and Operation
Canister Vent SolenoidTypical Canister Vent (CV) Solenoid:
During the Enhanced EVAP System test monitor, the Canister Vent
(CV) solenoid (Figure 99) seals the EVAP canister from atmospheric pressure. This allows the EVAP canister purge valve to obtain the target vacuum in the
fuel tank during the monitor run.
