This function is used to adjust the idle speed.
Idle speed shall only be changed if the engine vibrates a lot when idling.
Test conditions:
Ignition on, engine off.
Procedure:
Select the function.
A dialogue box shows status for "offset idle speed". Press "OK", and follow the instructions.
After finished adjustment the current offset value for idle speed is shown.
If the function fails, check the test conditions and repair any faults.