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2.7.7.28. Conditions of storing of codes of malfunction

EBU brings the P0300 code in memory, and the control lamp of malfunction of a control system of the engine lights up if in two cycles of driving there are 2 admissions of ignition of working mix on 100 turns of a bent shaft.
Frequency of admissions of ignition is measured through each 200 turns of a bent shaft in the presence of the following conditions:
– speed of change of frequency of rotation of a bent shaft does not exceed 1000 min.-1 in a second;
– frequency of rotation of a bent shaft is in limits of 600-4000 min.-1;
– loading of the engine is higher than 2 milliseconds;
– the cut-off of fuel does not occur;
– the starter does not work;
– the car moves on the flat road (the sensor of acceleration defines accelerations no more than 0,3 д).
If the frequency of repetition of admissions of ignition for 200 turns of a bent shaft increases for 5–25%, there is a danger of failure of catalytic converter, and the lamp of malfunction of a control system of the engine at first lights up blinking, and then constant light. With a sufficient high frequency of repetition of admissions of ignition temperature of catalytic converter can reach 1950 °C. Storing of EBU of this code indicates malfunction of a chain of ignition of the corresponding cylinder.