Hyundai Sonata LF: Emission Control System / General Information
Hyundai Sonata LF 2014-2019 Service Manual / Emission Control System / General Information
Description and Operation
| Description |
Emissions Control System consists of three major systems.
| • |
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). |
| • |
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. |
| • |
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 (?) | 19.8 ~ 21.8 [20°C(68°F)] |
| Tightening Torques |
| Item | kgf.m | N.m | lb-ft |
| Positive Crankcase Ventilation (PCV) Valve installation | 0.8 ~ 1.2 | 7.8 ~ 11.8 | 5.8 ~ 8.7 |
| Canister installation bolt | 0.4 ~ 0.6 | 3.9 ~ 5.9 | 2.9 ~ 4.3 |
Troubleshooting
| Troubleshooting |
| Symptom | Suspect area |
| Engine will not start or stuggle to start | Vapor hose damaged or disconnected |
| Engine stuggle 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 Sender (FLS) 7. Fuel Tank Air Filter 8. Catalytic Converter (WCC+UCC) |
| 1. PCV Valve | 2. Canister |
|
|
| 3. Purge Control Solenoid Valve (PCSV) | 4. Fuel Tank Pressure Sensor (FTPS) |
|
|
| 6. Fuel Level Sender (FLS) | 5. Canister Close Valve (CCV) 7. Fuel Tank Air Filter |
|
|
| 8. Catalytic Converter (WCC) | 8. Catalytic Converter (UCC) |
|
|
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...
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Hyundai Sonata LF 2014-2019 Service Manual: Front Door Latch Repair procedures
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Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
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