Hyundai Elantra: Emission Control System / General Information
Hyundai Elantra AD (2016-2020) Service Manual / Emission Control System / General Information
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.
|
Specifications
| Specifications |
Purge Control Solenoid Valve (PCSV)
? Specification
| Item | Specification |
| Coil Resistance (?) | 22.0 ~ 26.0 [20°C(68°F)] |
Fuel Tank Pressure Sensor (FTPS)
? Type: Piezo-Resistive Pressure Sensor
? Specification
| Pressure [kPa (kgf/cm?, in H2O)] | Output Voltage (V) |
| -6.67 (-0.068, -26.8) | 0.5 |
| 0 | 2.5 |
| +6.67 (0.068, 26.8) | 4.5 |
Canister Close Valve (CCV)
? Specification
| Item | Specification |
| Coil Resistance (?) | 19.5 ~ 22.5 [20°C(68°F)] |
| Tightening Torques |
| Item | kgf.m | N.m | lb-ft |
| Positive crankcase ventilation valve installation | 0.2 ~ 0.3 | 1.96 ~ 2.94 | 1.45 ~ 2.17 |
| Canister installation bolt/nut | 2.0 ~ 3.0 | 19.6 ~ 29.4 | 14.5 ~ 21.7 |
Troubleshooting
| 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 |
| Malfunction of the PCV valve | |
| Rough idle | Malfunction of the Evaporative Emission Control System |
| Excessive oil consumption | Positive crankcase ventilation line clogged |
Schematic Diagrams
| Schematic Diagram |
Components and Components Location
| Components Location |
| 1. PCV valve 2. Canister 3. Purge control solenoid valve (PCSV) 4. Fuel tank pressure sensor (FTPS) | 5. Canister close valve (CCV) 6. Fuel level sensor (FLS) 7. Fuel tank air filter 8. Catalytic converter |
| 1. PCV Valve | 2. Canister |
|
|
| 3. Purge Control Solenoid Valve (PCSV) | 4. Fuel Tank Pressure Sensor (FTPS) |
|
|
| 5. Canister Close Valve (CCV) 7. Fuel Tank Air Filter | 6. Fuel Level Sensor (FLS) |
|
|
| 8. Catalytic Converter (WCC) | 8. Catalytic Converter (UCC) |
|
|
Other information:
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