George....what you need is a scanner with activation functions...then you activate that system... the Kompressor engages..flap actuator divertes air to diverter valve..switchover valve applies vacuum...& air is injected thru the check valve...at that point the O2 sensor flat-lines at less than 40mv and remains at that point for the duration of the activation.
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MERCEDES Benz Master Guild Technician (6 TIMES)
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