Technician A says electronic secondary air systems used on OBD-II vehicles use an electrically driven air pump. Technician B says the check valves in the secondary air tubes prevent converter overheating if the electric air pump fails. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

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The Answer of Technician A says electronic secondary air systems used on OBD-II vehicles use an electrically driven air pump. Technician B says the check valves in the secondary air tubes prevent converter overheating if the electric air pump fails. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Technician a Says Electronic Secondary Air Systems Used on OBD-II