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Home >> Saturn >> 2001 >> LW200 L4-2.2L VIN F >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> Emission Control Systems >> Evaporative Emission (EVAP) Control System >> Evaporative Emission (EVAP) Vent Solenoid
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Evaporative Emission (EVAP) Vent Solenoid




The EVAP vent solenoid is located toward the top of the fuel filler neck tube. The sole function of the EVAP vent solenoid is for EVAP leak diagnostics. Outside air flows around the normally open valve (except during portions of the EVAP diagnostics) through the EVAP canister to the fuel tank. This allows the fuel tank to be at atmospheric pressure (no vacuum). The PCM controls the EVAP vent solenoid by grounding the solenoid circuit (closes valve).
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