Hyundai Sonata: Repair procedures - Evaporative Emission Control System - Emission Control SystemHyundai Sonata: Repair procedures

Inspection

[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)]
Engine
Operating
Condition
Applied
Vacuum
Result
Idle
14.5 inHg
(0.5 kgf/cm², 49.0kPa)
Vacuum is held
3,000rpm

· At Warmed Engine [Engine Coolant Temperature. 80°C(176°F)]
Engine
Operating
Condition
Applied
Vacuum
Result
Idle
14.5 inHg
(0.5 kgf/cm², 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/cm², 49.0kPa)
Vacuum will be held momentarily, after which, it will be released

[PCSV Inspection]
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).
Battery Voltage
Valve
Vacuum
Connected
Open
Released
Disconnected
Close
Maintained

6.
Measure the coil resistance of the PCSV.

Specifications: 19.0 ~ 22.0Ω [20°C(68°F)]

[EVAP. Leakage Test]
1.
Select "Evap. Leakage Test".

2.
Proceed with the test according to the screen introductions.


    Schematic Diagrams
    Schematic Diagram Canister The Canister is filled with charcoal and absorbs evaporated fuel vapor from the fuel tank. The gathered fuel vapor in canister is drawn into the intake man ...

    Canister. Repair procedures
    Removal 1. Disconnect the canister close valve connector (A). 2. Disconnect the ventilation tube quick-connector (B) and the vapor tube qu ...

    See also:

    Illuminated engine start/stop button
    Whenever the front door is opened, the engine start/stop button will illuminate for your convenience. The light will go off after about 30 seconds when the door is closed. ...

    Troubleshooting
    Troubleshooting     • The battery must be in good condition and fully charged for this troubleshooting. ...

    Snow tires
    If you equip your car with snow tires, they should be the same size and have the same load capacity as the original tires. Snow tires should be installed on all four wheels; otherwise, poor handli ...