Уже, для евро-4 :
Motronic ME 9.5.10
А здесь
Motronic ME7.4.4 читай про связь про второго лямбда-зонда с ECU.
И больше не повторяй всякий бред, включи свое логическое мышление, если оно у тебя есть. Достал уже.
Да, оригинал текста из Bosch ME7.4.4, на всякий случай:
XIX - DOWNSTREAM OXYGEN SENSOR
The downstream oxygen sensor is used to comply with the EOBD regulations(European On Board Diagnosis).It is located after the catalytic converter and it is used to check the efficiency of thecatalytic converter.The specifications and heating device of the downstream oxygen sensor are thesame as for the upstream oxygen sensor.The ECU is responsible for analysing the voltage supplied by the downstreamoxygen sensor. This voltage represents the oxygen content of the exhaust gasesat the outlet of the catalytic converter.The voltage supplied by the downstream oxygen sensor is offset in relation to theupstream oxygen sensor as the exhaust gases have to pass through the catalyticconverter before reaching the downstream oxygen sensor.In a new catalytic converter, chemical reactions are theoretically complete. As allof the oxygen is used for the chemical combinations, the low oxygen content at theoutput of the catalytic converter results in a voltage between 0.5 and 0.7 Volts atthe terminals of the downstream oxygen sensor when the engine is warm.In reality, the signal does however show a slight undulation despite the fact thatthe catalytic converter is in good condition. It then deteriorates over time as theperformances of the catalytic converter fall.As a function of this voltage, the ECU analyses the efficiency of the catalyticconverter and the combustion quality and from this decides whether richnessregulation should be modified or not