Kia Rio: Emission Control System

Kia Rio 2017-2023 YB Service Manual / Emission Control System

Specifications

Purge control solenoid valve (PCSV)

▷ Specification

Item	Specification
Coil resistance (Ω)	18.5 - 22.5 [23°C(73.40°F)]

Tightening Torques

Item	kgf·m	N·m	lb·ft
Positive Crankcase Ventilation (PCS) Valve	0.19 - 0.29	1.89 - 2.84	1.40 - 2.09
Purge Control Solenoid Valve (PCSV) bracket mounting bolt	1.0 - 1.2	9.8 - 11.8	7.2 - 8.7

Components and components location

Components Location

1. PCV valve
2. Canister
3. Purge control solenoid valve (PCSV)
4. Catalytic converter (WCC)
5. Catalytic converter (UCC)

6. Leveling Hose
7. Vapor Tube (Canister ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Air Filter)
10. Ventilation Hose (Air Filter ↔ Atmosphere)

1. PCV valve	2. Canister

3. Purge Control Solenoid Valve (PCSV)	4. Catalytic Converter (WCC)

5. Catalytic Converter (UCC)

6. Leveling Hose 7. Vapor Tube ( Canister ↔ Intake Manifold) 8. Vapor Hose (Canister ↔ Fuel Tank) 9. Ventilation Hose (Canister ↔ Air Filter) 10. Ventilation Hose (Air Filter ↔ Atmosphere)

Description and operation

Description

Emissions control system consists of the three major systems.

•	Crankcase emission control system prevents blow-by gas from going into the atmosphere. This system burns these gases after moving them to the intake manifold (Closed Crankcase Ventilation Type).

•	Evaporative emission control system prevents evaporative gas going into the atmosphere. This system burns the gases at appropriate engine operating condition after gathering it in the canister.

•	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.

Schematic diagrams

Schematic Diagram

Troubleshooting

Symptom	Suspect area
Engine will not start or hard to start	Vapor hose damaged or disconnected
Engine hard to start	Malfunction of the purge control solenoid valve
Rough idle or engine stalls	Vapor hose damaged or disconnected
Rough idle or engine stalls	Malfunction of the PCV valve
Rough idle	Malfunction of the evaporative emission control system
Excessive oil consumption	Positive crankcase ventilation line clogged

Crankcase Emission Control System

Positive Crankcase Ventilation (PCV) Valve

Evaporative Emission Control System

Exhaust Emission Control System

❮Cruise Control Switch

Components and components location Components 1. Left Remote Control Switch (Audio + Hands free + Voice) 2. Right Remote Control Switch (Cruise+Trip Computer) Schematic diagrams Circuit Diagram [Audio] [Audio + Bluetooth] [Audio + Bluetooth + Voice] [Trip] [Trip + ACC (2 Button)] [Trip + ACC + SLD (2 Button)] [Trip + ACC (4 Button)] [Trip + ACC + SLD (4 Button)] Repair procedures Removal 1.

Crankcase Emission Control System❯

Schematic diagrams Schematic Diagram Repair procedures Inspection 1. After disconnecting the vapor hose from the PCV valve, remove the PCV valve.

Other information:

Kia Rio 2017-2023 YB Service Manual: Ignition Switch

Repair procedures Inspection 1. Disconnect the key warning switch connector (A) and ignition switch connector (B) from the steering column. 2. Check for continuity between the terminals.

Kia Rio 2017-2023 YB Service Manual: Blower Resistor (MANUAL)

Repair procedures Inspection 1. Measure the resistance between the terminals. 2. The measured resistance is not within specification, the blower resistor must be replaced. (After removing the resistor) Replacement 1.