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An electric SAI pump is controlled by ________.


A) Exhaust pressure
B) Manifold vacuum
C) A vacuum switch
D) The PCM

E) B) and D)
F) All of the above

Correct Answer

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D

The electric AIR pump is energized for ________.


A) Until the engine goes into closed loop
B) No longer than 4 minutes
C) Either A or B
D) Neither A nor B

E) All of the above
F) A) and D)

Correct Answer

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C

Technician A says that the PCV system should create a slight pressure in the crankcase at idle. Technician B says that the PCV system should create a slight vacuum in the crankcase at 2,500 RPM. Which technician is correct?


A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

E) All of the above
F) B) and C)

Correct Answer

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A P0410 DTC indicates a problem with ________.


A) The SAI solenoid
B) The idle control system
C) MAF airflow
D) None of these

E) C) and D)
F) B) and D)

Correct Answer

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Where is the output of the AIR pump directed when the engine is cold?


A) Air cleaner assembly
B) Catalytic converter
C) Exhaust manifold
D) To the atmosphere

E) A) and C)
F) C) and D)

Correct Answer

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In what year did PCV system monitoring become mandatory?


A) 1996
B) 2004
C) 2000
D) 1988

E) C) and D)
F) None of the above

Correct Answer

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The SAI system is used to reduce which exhaust emission?


A) CO
B) NOx
C) HC
D) Both HC and CO

E) A) and B)
F) B) and C)

Correct Answer

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All engines are equipped with a PCV valve.

A) True
B) False

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Two technicians are discussing exhaust check valves used in SAI systems. Technician A says that they are used to prevent the output from the SAI pump from entering the intake manifold. Technician B says the check valves are used to keep the exhaust from entering the AIR pump. Which technician is correct?


A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

E) A) and B)
F) A) and C)

Correct Answer

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B

The PCV system controls which exhaust emission(s) ?


A) HC
B) CO
C) NOx
D) Both A and B

E) C) and D)
F) B) and D)

Correct Answer

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Technician A says that if the PCV valve were defective or clogged, the engine could idle rough. Technician B says that the engine may stall. Which technician is correct?


A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

E) None of the above
F) C) and D)

Correct Answer

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When checking for the proper operation of the AIR system using an exhaust gas analyzer, how much should the oxygen levels increase when the pump is allowed to function?


A) 10-20%
B) 1-4%
C) Up to 30%
D) 5-10%

E) A) and D)
F) All of the above

Correct Answer

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Showing 1 - 12 of 12

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