Hyundai Accent (HC): Emission Control System

Hyundai Accent (HC) (2017 - 2022) Service Manual / Emission Control System

Contents:

Specifications

- Specifications Purge Control Solenoid Valve (PCSV) â–· Specification

ItemSpecification
Coil Resistance (Ω)12.5 ~ 16.5 [20°C (68°F)]

- Tightening Torques
Itemkgf.mN.mlb-ft
Positive Crankcase Ventilation (PCV) valve1.0 - 1.29.8 - 11.72.2 - 2.6
Canister mounting bolt2.2 - 2.421.5 - 23.54.8 - 5.2
Exhaust manifold hit protecter mounting bolt1.0 - 1.29.8 - 11.72.2 - 2.6
EGR cooler pipe mounting bolt1.9 - 2.418.6 - 23.54.1 - 5.2
Exhaust manifold & Catalytic Converter stay mounting bolt4.0 - 5.039.2 - 49.08.8 - 11.0
Engine mounting support braket mounting nut9.0 - 11.088.2 - 107.819.8 - 24.2
Engine mounting support braket mounting bolt / nut6.0 - 7.558.8 - 73.513.2 - 16.5
Exhaust manifold & Catalytic Converter mounting nut3.0 - 4.029.4 - 39.26.6 - 8.8
Catalytic Converter & Center muffler mounting nut4.0 - 6.039.2 - 58.88.8 - 13.2

Description and Operation

- Description Emissions Control System consists of three major systems.

• The Crankcase Emission Control System prevents blow-by gas from releasing into the atmosphere. This system recycles gas back into the intake manifold (Closed Crankcase Ventilation Type).

• The Evaporative Emission Control System prevents evaporative gas from releasing into the atmosphere. This system burns gas at appropriate engine operating condition after gathering it in the canister.

• The Exhaust Emission Control System converts the three pollutants [hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx)] into harmless substances by using the 3-way catalytic converter.

Troubleshooting

- Troubleshooting

SymptomSuspect area
Engine will not start or struggle to startVapor hose damaged or disconnected
Engine struggles to startMalfunction of the Purge Control Solenoid Valve
Rough idle or engine stallsVapor hose damaged or disconnected
Malfunction of the PCV valve
Rough idleMalfunction of the Evaporative Emission Control System

Schematic Diagrams

- Schematic Diagram

Components and Components Location

- Components Location

1. Canister
2. Purge Control Solenoid Valve (PCSV)
3. Fuel Level Sensor (FLS)
4. Fuel Tank Air Filter
5. Catalytic converter (WCC)
6. Catalytic converter (UCC)
7. Vapor Tube (Canister ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Atmosphere)


1. Canister
4. Fuel Tank Air Filter		2. Purge Control Solenoid Valve (PCSV)

3. Fuel Level Sensor (FLS)5. Catalytic converter (WCC)

6. Catalytic converter (UCC)

7. Vapor Tube (Canister ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Atmosphere)


Evaporative Emission Control System ➤

Exhaust Emission Control System ➤

Cruise Control System

Evaporative Emission Control System

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Maintenance services

You should exercise the utmost care to prevent damage to your Hyundai Accent and injury to yourself whenever performing any maintenance or inspection procedures. Use proper tools, keep the engine compartment clean, and never work near moving parts with the engine running. Have your vehicle maintained and repaired by an authorized HYUNDAI dealer. An authorized HYUNDAI dealer meets HYUNDAI's high service quality standards and receives technical support from HYUNDAI in order to provide you with a high level of service satisfaction.

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