Hyundai Elantra Owners and Service Manuals

Hyundai Elantra: Evaporative Emission Control System / Schematic diagrams

Hyundai Elantra (CN7) 2021-2025 Service Manual / Emission Control System / Evaporative Emission Control System / Schematic diagrams

Schematic Diagram

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.

    Evaporative Emission Control System

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    Canister

    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...

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