Hyundai Elantra: Evaporative Emission Control System / Schematic diagrams
1. Air cleaner 2. Delivery pipe & injector 3. Engine 4. Purge control solenoid valve (PCSV) 5. Fuel tank air filter
| 6. Fuel pump 7. Fuel filler neck 8. Fuel filler cap 9. Fuel tank
|
Canister
Canister is filled with charcoal and absorbs evaporated vapor in fuel tank. The gathered fuel vapor in canister is drawn into the intake manifold by the ECM/PCM when appropriate conditions are set.
Purge Control Solenoid Valve (PCSV)
Purge Control Solenoid Valve (PCSV) is installed in the passage connecting canister and intake manifold. It is a duty type solenoid valve and is operated by ECM/PCM signal.
To draw the absorbed vapor into the intake manifold, the ECM/PCM will open the PCSV, otherwise the passage remains closed.
Fuel Filler Cap
A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which would seal the fuel filler. After the gasket on the fuel filler cap and the fill neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.
Repair procedures
Removal1.Turn the ignition switch OFF and disconnect the negative (-) battery cable. 2.Disconnect the vent hose (A).3.Remove the fuel tank air filter (A) by rotating it 30 degrees...
Other information:
The mode selection toggle switch
controls the direction of the air flow
through the ventilation system.
The air flow outlet direction is cycled as
follows:
Face-level (B, D)
Air flow is directed toward the upper
body and face. Additionally, each outlet
can be controlled to direct the air
discharged from the outlet...
Repair procedures
Removal
•
Use Fender cover to avoid damaging painted surfaces.•
To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature before removing it...