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: Compressor
Description and operation DescriptionThe compressor is the power unit of the A/C system.It is located on the side of engine block and driven by a V-belt of the engine.The compressor changes low pressure and low temperature refrigerant gas into high pressure and high temperature refrigerant gas.
Hyundai Elantra (CN7) 2021-2026 Service Manual: Mode Control Actuator
Description and operation DescriptionThe mode control actuator is located at the heater unit.It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C control unit. Pressing the mode select switch makes the mode control actuator shift in order of Vent → Bi-Level → Floor → Mix.
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