Overall Function Check

With GST 

Use this procedure to check the overall function of the EVAP very small leak function. During this check, a 1st trip DTC might not be confirmed.

1. Attach the EVAP service port adapter securely to the EVAP service port. For service port location, see Figure.
2. Set the pressure pump and a hose.
3. Also set a vacuum gauge via 3-way connector and a hose.
4. Turn ignition switch ON.
5. Connect GST and select MODE 8.
6. Using MODE 8 control the EVAP canister vent control valve (close) and vacuum cut valve bypass valve (open).
7. Apply pressure and make sure the following conditions are satisfied.

   Pressure to be applied: 2.7 kPa (20 mmHg, 0.79 inHg) 

   Time to be waited after the pressure drawn in to the EVAP system and the pressure to be dropped: 60 seconds and the pressure should not be dropped more than 0.4 kPa (3 mmHg, 0.12 inHg). 

   If NG, go to DIAGNOSTIC PROCEDURE  .

   If OK, go to next step.

8. Disconnect GST.
9. Start engine and warm it up to normal operating temperature.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Restart engine and let it idle for 90 seconds.
12. Keep engine speed at 2,000 RPM for 30 seconds.
13. Turn ignition switch OFF.
    NOTE: For more information, refer to GST instruction manual.