Activating the leak diagnostic

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Start the engine and let it idle.
NOTE:
The engine must be idling throughout the test.
Clicking the VCT2000 symbol to activate the leak diagnostic
Wait until the engine coolant temperature (ECT) exceeds 50 °C
Start the leak diagnostic. YES is displayed during leak diagnostics
Wait until the leak diagnostic is complete. Leak diagnostic active NO and leak diagnostic complete YES is displayed when the leak diagnostic is complete.
HINT: The time taken for the diagnostic varies depending on the fault status of the fuel tank system. The diagnostic may take up to 4 minutes.
Read off the results of the leak diagnostic. The leak diagnostic results are read off automatically when the test has been correctly completed
The OK status will be displayed if the control module has not detected any faults. The Not OK status, and a number from 1-8 will be displayed if the control module has detected any faults. To interpret these faults, see the status definitions below.
NOTE:
The status types can be translated into diagnostic trouble codes (DTCs). However they are not stored as DTCs during this test.
Click the stop button to re-run the test.
Status definitions:
- OK = The system is free of faults
- Not OK, status 1 = Leak diagnostic pump, signal too low. (ECM-65, signal too low)
- Not OK, status 2 = Leak diagnostic pump, signal too high. (ECM-65, signal too high)
- Not OK, status 3 = Leak diagnostic pump, faulty signal. (ECM-65, faulty signal)
- Not OK, status 4 = Leak diagnostic pump, blocked hose. (ECM-66, signal too low)
- Not OK, status 5 = Leakage 0.5 mm. (ECM-68, minor leak)
- Not OK, status 6 = Leakage 1 mm. (ECM-68, major leak)
- Not OK, status 7 = Leakage larger than 1 mm. (ECM-68, Fuel tank filler cap missing)
- Not OK, status 8 = Evaporative emission (EVAP) system blocked. (ECM-6A, signal too low).
Select a suitable alternative to continue:
1. The status is OK
  VERIFIED: Troubleshooting has been completed.
2. Status Not OK, status 1, 2 or 3
  Refer to Information
3. Status Not OK, (for another diagnostic trouble code (DTC)) has been detected.
  Refer to Fault-tracing information:
Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.