Kia Rio: Emission Control System / Evaporative Emission Control System
Description and operation
| Description |
Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere. When the fuel evaporates in the fuel tank, the vapor passes through vent hoses or tubes to the canister filled with charcoal and the canister temporarily holds the vapor in the charcoal. If ECM determines to draw the gathered vapor into the combustion chambers during certain operating conditions, it will use vacuum in intake manifold to move it.
Schematic diagrams
| Schematic Diagram |
| 1. Air cleaner 2. Delivery pipe & injector 3. Engine 4. Purge control solenoid valve (PCSV) |
5. Fuel pump 6. Fuel filler neck 7. Fuel filler cap 8. 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.
Description and operation Operation Principle Repair procedures Removal 1. Disconnect the vapor hose (A) and then remove the PCV valve (B).
Repair procedures Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) terminal. 2.
Other information:
Kia Rio 2017-2023 YB Service Manual: Immobilizer Control Unit
Repair procedures Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the main crash pad assembly. (Refer to Body - "Main Crash Pad Assembly") 3. Disconnect the connector of the immobilizer unit and then remove the immobilizer unit (A) after
Kia Rio 2017-2023 YB Service Manual: Rear Washer Motor
Repair procedures Inspection 1. With the washer motor connected to the reservoir tank, fill the reservoir tank with water. Before filling the reservoir tank with water, check the filter for foreign material or conta
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