Toyota Lexus Is250, Is220D. Gse20 Ale204GR-FSE EMISSION CONTROL EMISSION CONTROL SYSTEM PARTS LOCATION SYSTEM DIAGRAM ON-VEHICLE INSPECTION INSPECTION CANISTER COMPONENTS REMOVAL INSPECTION INSTALLATION VACUUM SWITCHING VALVE (for EVAP) COMPONENTS ON-VEHICLE INSPECTION REMOVAL INSPECTION INSTALLATION VENTILATION VALVE COMPONENTS REMOVAL INSPECTION INSTALLATION AIR FUEL RATIO SENSOR (for Sensor 1) COMPONENTS ON-VEHICLE INSPECTION REMOVAL INSTALLATION HEATED OXYGEN SENSOR (for Sensor 2) COMPONENTS ON-VEHICLE INSPECTION REMOVAL INSTALLATION