Hyundai Ioniq: Evaporative Emission Control System / Schematic diagrams

Hyundai Ioniq (AE) 2017-2025 Service Manual / Engine Electrical System / Evaporative Emission Control System / Schematic diagrams

Schematic Diagram

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

Canister. Repair procedures

Removal1.Turn ignition switch OFF and disconnect the negative (-) battery cable.2.Remove the fuel tank.(Refer to Engine Control/Fuel System - "Fuel Tank")3...

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Limitations of the system

The driver must be cautious in the below situations, because the system may not detect other vehicles or objects in certain circumstances. When a trailer or carrier is installed. The vehicle drives in inclement weather such as heavy rain or snow. The sensor is polluted with rain, snow, mud, etc...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Intake Air Temperature Sensor (IATS). Repair procedures

Inspection1.Turn the ignition switch OFF.2.Disconnect the IATS connector.3.Measure resistance between the IATS terminals 3 and 4.4.Check that the resistance is within the specification. Specification : Refer to "Specification"Removal 1.Turn ignition switch OFF and disconnect the negative (-) battery cable...