Fuel Evaporation System: Notes

NOTE: Fuel evaporation systems contain different components depending on application. See Figure-Figure . When testing fuel evaporation system components, it may be necessary to use proper illustration to determine component location.

NOTE: On Camry and Corolla, an On-Board Refilling Vapor Recovery (ORVR) system is used to recover fuel vapors into the charcoal canister that are generated during refueling. ORVR system consists of fuel inlet pipe, overfill check valve, cut-off valve and charcoal canister. See Figure-Figure . Overfill check valve may also be referred to as On-Board Refueling Vapor Recovery Overfill Check Valve (ORVR-OCKV) or fill check valve. Cut-off valve may also be referred to On-Board Refueling Vapor Recovery Cut-Off Valve (ORVR-COV). For testing of ORVR system components, see ON-BOARD REFILLING VAPOR RECOVERY (ORVR) SYSTEM .

NOTE: Charcoal canister may also be referred to as EVAP canister.