Preconditions for the test:
Engine idling.
No faults stored.
Engine temperature above 85 °C.
All electrical loads switched off.
Automatic gearbox set to ”P/N”.
Note:
Used when troubleshooting, by letting the carbon canister valve be alternately closed or active. By comparing the values shown with the carbon canister valve closed or active, you can assess the effect of the tank venting system.
At basic setting, the ignition timing is locked to 12° before TDC, digital idling stabilisation is locked, the AC compressor is off, the EGR valve is closed, no engine temperature correction is applied and adaption values are set to 0.
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 active.
On completion of basic setting, the carbon canister valve is activated automatically.