As part of maintenance, adjustment of the idle speed, ignition timing and CO concentration is not carried out, since these parameters are continuously monitored by the electronic engine management system.
If, nevertheless, there is a deviation of the actual values of the parameters from the required ones, then the reason lies in the failure of the corresponding elements that need to be replaced. A qualified check of the engine management system is possible only with the help of special diagnostic tools. Refer to Section Basic information on the electronic engine control system.