Preconditions for the test:
Engine idling.
No faults stored.
No leaks in the exhaust system.
Engine temperature above 80 °C.
All electrical loads switched off.
Automatic gearbox set to ”P/N”.
Pressure gauge not connected.
Note:
Used to check idling speed.
The idling speed is not adjustable.
During the idling check, the AC compressor is switched off and the carbon canister valve is closed.
Procedure:
Choose the idling check function.
Compare the actual speed signal (actual value) with the specified speed signal (target value).
On completion of basic setting, the carbon canister valve is activated automatically.