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.

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