Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
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