Hyundai Elantra (CN7): Emission Control System / 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 |
Components Location1. Canister2. Purge control solenoid valve (PCSV)3. Fuel Tank Air Filter4. Catalytic converter (WCC)5. Catalytic converter (UCC)1. Canister 2.
SpecificationsPurge Control Solenoid Valve (PCSV)▷ Specification Item Specification Coil Resistance (Ω)22.
Other information:
Hyundai Elantra (CN7) 2021-2026 Service Manual: Photo Sensor
Description and operation Description 1.The photo sensor is located at the center of the defrost nozzles.2.The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar radiation received by its light receiving portion, generates an electromotive force in proportion to the amount of radiation received which is transferred to
Hyundai Elantra (CN7) 2021-2026 Service Manual: Auto Defoging Actuator
Description and operation DescriptionThe auto defogging sensor is installed on front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actua
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