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 if in two cycles of driving there are 2 admissions of ignition of a working mix on 100 turns of a cranked shaft lights up.

Frequency of admissions of ignition is measured through each 200 turns of a cranked shaft in the presence of the following conditions:

– speed of change of frequency of rotation of a cranked shaft does not exceed 1000 ^mines-1 in a second;

– frequency of rotation of a cranked shaft is in limits of 600-4000 ^mines-1;

– loading of the engine is higher than 2 milliseconds;

– otsechka of fuel do not occur;

– the starter does not work;

– the car moves on the equal road (the sensor of acceleration defines accelerations no more than 0,3 д).

If frequency of repetition of admissions of ignition for 200 turns of a cranked shaft increases for 5–25 %, there is a danger of failure of catalytic converter, and a lamp of malfunction of a control system of the engine at first lights up blinking, and then constant light. At sufficient high frequency of repetition of admissions of ignition the 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.