Engine Performance 1 pretest UPDATED
ACTUAL Questions and CORRECT
Answers
Technician A says that knowing if there are any stored diagnostic trouble codes (DTCs) may be helpful
when checking for related technical service bulletins (TSBs). Technician B says that only a factory scan
tool should be used to retrieve DTCs. Which technician is correct? - CORRECT ANSWER -
Technician A only
By looking at the way diagnostic trouble codes are formatted, which DTC could indicate that the gas cap
is loose or defective? - CORRECT ANSWER - P0442
Technician A says that a waste spark ignition system fires two spark plugs at the same time. Technician B
says that the waste spark ignition system uses ignition coils connected to companion cylinders. Which
technician is correct? - CORRECT ANSWER - Both technicians A and B
Technician A assumes a replacement part is good just because it is new. Technician B says that
sometimes recent repair work will be the cause of a complaint. Which technician is correct? - CORRECT
ANSWER - Technician B only
Which diagnostic step is the most important aspect of diagnosis? - CORRECT ANSWER - Visual
inspection
A spark tester should be used to check for spark because ________. - CORRECT ANSWER -A
spark tester requires at least 25,000 volts to fire
Technician A says that a leaking head gasket can be tested for by using a chemical tester. Technician B
says that a leaking head gasket can be found using an exhaust gas analyzer. Who is correct? - CORRECT
ANSWER - Both technicians A and B
Technician A says that the primary coil has more windings. Technician B says that the secondary coil has
more windings. Which technician is correct? - CORRECT ANSWER - Technician B only
ACTUAL Questions and CORRECT
Answers
Technician A says that knowing if there are any stored diagnostic trouble codes (DTCs) may be helpful
when checking for related technical service bulletins (TSBs). Technician B says that only a factory scan
tool should be used to retrieve DTCs. Which technician is correct? - CORRECT ANSWER -
Technician A only
By looking at the way diagnostic trouble codes are formatted, which DTC could indicate that the gas cap
is loose or defective? - CORRECT ANSWER - P0442
Technician A says that a waste spark ignition system fires two spark plugs at the same time. Technician B
says that the waste spark ignition system uses ignition coils connected to companion cylinders. Which
technician is correct? - CORRECT ANSWER - Both technicians A and B
Technician A assumes a replacement part is good just because it is new. Technician B says that
sometimes recent repair work will be the cause of a complaint. Which technician is correct? - CORRECT
ANSWER - Technician B only
Which diagnostic step is the most important aspect of diagnosis? - CORRECT ANSWER - Visual
inspection
A spark tester should be used to check for spark because ________. - CORRECT ANSWER -A
spark tester requires at least 25,000 volts to fire
Technician A says that a leaking head gasket can be tested for by using a chemical tester. Technician B
says that a leaking head gasket can be found using an exhaust gas analyzer. Who is correct? - CORRECT
ANSWER - Both technicians A and B
Technician A says that the primary coil has more windings. Technician B says that the secondary coil has
more windings. Which technician is correct? - CORRECT ANSWER - Technician B only
