Evaporative Emission Control System - 2.0L - Except Hev: Diagnosis Hyundai Sonata VI

[System Inspection]

1. Disconnect the vapor hose from the throttle body and connect a vacuum pump to the nipple on the throttle body.
2. Check the following points with applied vacuum using a vacuum pump. At Cold Engine [Engine Coolant Temperature < 60°C (140°F)] RESULT REFERENCE CHART Engine Operating Condition Applied Vacuum Result Idle 14.5 inHg (0.5 kgf/cm 2 , 49.0kPa) Vacuum is held 3,000rpm At Warmed Engine [Engine Coolant Temperature > 80°C (176°F)] RESULT REFERENCE CHART Engine Operating Condition Applied Vacuum Result Idle 14.5 inHg (0.5 kgf/cm 2 , 49.0kPa) Vacuum is held Within 3 minutes after engine start at 3,000 rpm Try to apply vacuum Vacuum is released In 3 minutes after engine start at 3,000 rpm 14.5 inHg (0.5 kgf/cm 2 , 49.0kPa) Vacuum will be held momentarily, after which, it will be released

Scheme 315

1. Turn ignition switch OFF and disconnect the negative (-) battery cable.
2. Disconnect the PCSV connector (A).
3. Disconnect the vapor hose (B) which is connected to the intake manifold from the PCSV.
4. After connecting a vacuum pump to the nipple, apply vacuum.
5. With the PCSV control line grounded, check the valve operation with battery voltage applied to the PCSV (Open) and removed (Closed). VOLTAGE SPECIFICATION CHART Battery Voltage Valve Vacuum Connected Open Released Disconnected Close Maintained
6. Measure the coil resistance of the PCSV. Specifications: 19.0 ~ 22.0ohms [20°C (68°F)]

Scheme 316

Scheme 317

1. Select "Evap. Leakage Test".
2. Proceed with the test according to the screen introductions.

Scheme 318

Scheme 319

1. Disconnect the canister close valve connector (A).
2. Disconnect the ventilation tube quick-connector (B) and the vapor tube quick-connectors (C, D).
3. Remove the installation bolts (E), and then remove the canister.

Scheme 320

1. Check for the following items visually. Cracks or leakage of the canister Loose connection, distortion, or damage of the vapor hose/tube A: Canister <--> Atmosphere B: Canister <--> Fuel Tank C: Canister <--> Intake Manifold