Preconditions for the test:
Engine idling.
No faults stored.
Engine temperature above 80 °C.
All electrical loads switched off.
Note:
Used for troubleshooting by letting the carbon canister be alternately closed or active (when active, about 220-900 seconds, open / about 70 seconds closed). By comparing the values shown with the carbon canister valve closed and open, you can assess the effect of the tank venting system.
Procedure:
Choose the tank venting function.
Now you can use the arrows above the value lines to alternate the carbon canister valve between closed and open.
On completion of basic setting, the carbon canister valve is activated automatically.