Hyundai Elantra (CN7): Emission Control System / Troubleshooting

Hyundai Elantra (CN7) 2021-2026 Service Manual / 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: Special service tools

    Special Service Tools Tool Name / Number Illustration Description LKA Compensator(09890-3V100)Used for compensating front view camera unitBCW Sensor Correction Tool Set(09958-3T500)Used to correct the blind-spot radar unit.

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Troubleshooting

    Diagnosis with Diagnostic tool1.In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool).The diagnostic system (Diagnostic tool) provides the following information.(1)Fault Code Searching : Checking failure and code number (DTC)(2)Data Analysis : Checking the system input/output data s

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