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Evaporative Emissions System: Testing and Inspection





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 applying vacuum using the vacuum pump.
- At Cold Engine [Engine Coolant Temperature < 60°C(140°F)]





- At Warmed Engine [Engine Coolant Temperature > 80°C(176°F)]






[PCSV Inspection]
1. Turn ignition switch OFF and disconnect the negative (-) battery cable.
2. Disconnect the PCSV connector.
3. Disconnect the vapor hose which is connected with 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 valve operation when applying battery voltage to the PCSV or not.





6. Measure the coil resistance of the PCSV.

Specification:
26Ohms [20°C(68°F)] (2.0 DOHC)
24.5 - 27.5Ohms [20°C(68°F)] (2.7 V6)


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