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”.
Note:
Used to check idling.
Before checking the idling, see Basic setting requirements.
Idling, ignition advance/retard and CO value are not adjustable.
The idling speed is set by the control unit.
The CO value is controlled by the lambda regulation.
In the basic setting mode, the carbon canister valve is closed and the AC compressor is switched off.
Procedure:
Choose the function: Idling check.
Rev up the engine and let it idle for two minutes.
Check the block of digits in the operating condition column. Prescribed value XX0X0.
Read off the engine speed signal (target value). Prescribed value 700 rpm.
Read off the engine speed signal (actual value). Prescribed value 650-850 rpm.
On completion of basic setting, the carbon canister valve is activated and the AC compressor is switched on.