Evaporative Emissions System: Testing and Inspection

Inspection

[Evap Leak Test]
Engine Control Module (ECM) controls Purge Control Solenoid Valve (PCSV) and Canister Close Valve (CCV) for EVAP System diagnosis if the conditions are satisfied.
ECM displays DTC codes after checking the leak rate through detecting change of FTPS signal. In addition, EVAP Leak can be checked through the EVAP Leak Test function of the GDS diagnostic tool as shown below.
1. Turn ignition switch OFF.
2. Connect the GDS to Data Link Connector (DLC).
3. Start the engine.
4. Select "Vehicle, Model year, Engine, System".
5. Select "Vehicle S/W Management".
6. Select "Inspection / Test".
7. Select "Evap Leak Test".
8. Perform the procedure in accordance with the message.