SOS MECHANIC CERTIFICATION BRAKES
EXAMINATION TEST PAPER 2026 QUESTIONS
WITH CORRECT ANSWERS
● The Purpose of catalytic converter. Answer: oxidize hc co into c02 and
h20
● What vehicles are designed to go into a closed loop operation when.
Answer: all of the above
● Diagram shows a vacuum hose connected to "p vacuum" this means
the hose should be connected. Answer: above the throttle plate
● If the voltage spike is not high enough on one cylinder, what is the
most likely source of the problem.. Answer: a failed spark plug
● wide-open-throttle the power train control module reverts. Answer:
open loop, rich mixtures
● during a cylinder leakage test air escaping through the throttle body
means there is a leak at. Answer: the intake valve
, ● higher than normal oxides of nitrogen (n0x) emissions may be caused
by. Answer: all of the above
● A reading of 8 volts on meter 2 while cranking would indicate.
Answer: an excessive ground circuit voltage drop
● emission control systems are installed on engines to reduce what 3
specific exhaust products. Answer: Hydrocarbons, carbon monoxide and
oxides of nitrogen
● You have verified a slow cranking complaint, which of the following
should you do next. Answer: Determine the condition of the battery
● The Egr System is designed to. Answer: cruise
● You are monitoring the tps signed voltage digital volt ohm. Answer: A
smooth voltage increase to about 4.5 v
● an electronic fuel injected system that sprays into the throat of intake.
Answer: a throttle body injections system
● What is the function of the egr valve. Answer: it recalculates exhaust
gasses into the intake
EXAMINATION TEST PAPER 2026 QUESTIONS
WITH CORRECT ANSWERS
● The Purpose of catalytic converter. Answer: oxidize hc co into c02 and
h20
● What vehicles are designed to go into a closed loop operation when.
Answer: all of the above
● Diagram shows a vacuum hose connected to "p vacuum" this means
the hose should be connected. Answer: above the throttle plate
● If the voltage spike is not high enough on one cylinder, what is the
most likely source of the problem.. Answer: a failed spark plug
● wide-open-throttle the power train control module reverts. Answer:
open loop, rich mixtures
● during a cylinder leakage test air escaping through the throttle body
means there is a leak at. Answer: the intake valve
, ● higher than normal oxides of nitrogen (n0x) emissions may be caused
by. Answer: all of the above
● A reading of 8 volts on meter 2 while cranking would indicate.
Answer: an excessive ground circuit voltage drop
● emission control systems are installed on engines to reduce what 3
specific exhaust products. Answer: Hydrocarbons, carbon monoxide and
oxides of nitrogen
● You have verified a slow cranking complaint, which of the following
should you do next. Answer: Determine the condition of the battery
● The Egr System is designed to. Answer: cruise
● You are monitoring the tps signed voltage digital volt ohm. Answer: A
smooth voltage increase to about 4.5 v
● an electronic fuel injected system that sprays into the throat of intake.
Answer: a throttle body injections system
● What is the function of the egr valve. Answer: it recalculates exhaust
gasses into the intake
