Test condition:
Engine idling.
No faults stored.
No leaks in the exhaust system.
Engine temperature above 90 °C.
Throttle at idling position.
All electrical loads switched off.
Automatic gearbox set to ”P/N”.
Pressure gauge not connected.
Note:
Used to check idling speed.
The idling speed cannot be adjusted.
Procedure:
Choose the idling check function.
Rev up the engine and let it idle for two minutes.
Compare the actual speed signal (actual value) with the specified speed signal (target value). Required values: engine speed signal (actual value) = (target value) ±50 rpm; idling regulator air mass -1 till 1 g/s; status 0000.