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:

    Injector. Description and Operation
    Description Based on information from various sensors, the ECM can calculate the fuel amount to be injected. The fuel injector is a solenoid-operated valve and the fuel injection amount is c ...

    Gasoline containing alcohol and methanol
    Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol), and gasoline or gasohol containing methanol (also known as wood alcohol) are being marketed along with or instead of leade ...

    Voice command
    Starting Voice Command To start voice command, shortly press the key on the steering wheel remote controller. If voice command is in [Normal Mode], then the system will say “Please say a ...