At malfunction of the oxygen sensor toxicity of the fulfilled gases can sharply raise.
If the oxygen sensor is serviceable, but tension of its signal does not correspond to norm, be convinced of lack of the following malfunctions of system of regulation of structure of a working mix:
– malfunction of nozzles;
– подсос air in the inlet pipeline;
– malfunction of the sensor of a mass consumption of air, the valve of a purge of an adsorber and the sensor of temperature of cooling liquid;
– malfunction of conducting.
At a sharp otpuskaniye of a pedal of an accelerator after operation of the engine with frequency of rotation of a cranked shaft about 4000 mines-1 supply of fuel quickly stops and the HI-SCAN device shows values not above 200 мВ. By sharp pressing a pedal of an accelerator of the indication will pass to an interval 600–1000 мВ. At decrease in turns to idling tension of a signal will fluctuate between intervals 200 мВ and 600–1000 мВ. In this case it is possible to consider the oxygen sensor serviceable.