ASE test prep UPDATED ACTUAL
Questions and CORRECT Answers
Technician A says that when pressure testing a radiator cap, a special adapter is needed.
Technician B says the best way to check thermostat operation is while it is in the engine. Who is
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - The correct answer is A. Test the radiator cap
with the cooling system tester's radiator cap adapter. The thermostat can most effectively be
rested by removing it from the vehicle, and submerging it in coolant heater about l 5°]: (8°C)
above the normal thermostat opening temperature.
2. A technician Is checking resistance In an engine's spark plug wires using an ohmmeter. A
general rule Is to replace a wire if resistance is over:
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 2. The correct answer is B. A general rule is
to replace the wire if the resistance is over 30,000 ohms. The resistance of suspect wires can be
checked using an ohmmeter. To check resistance, disconnect the spark plug end and coil end of
one spark plug wire. Connect an ohmmeter lead to each end of the spark plug wire's terminals.
3. Technician A says that in an ignition system, the voltage supplied to the coil during starting is
battery voltage. Technician B says the coil uses electromagnetic induction to create high voltage.
Who is right?
A. Technician A only
B. Technician B only
,C. Both A and B
D. Neither A or B - CORRECT ANSWER - 3.The correct answer is C, both technicians.
Battery voltage supplies the primary side of the ignition coil with 12 volt cs. The coil uses
electromagnetic induction to create high voltage. When the voltage is reduced on the primary
side of the coil, the collapsing magnetic field induces a much higher voltage in the secondary
side and sends it through the secondary system in the spark plugs.
A Front Wheel Drive (FWD) vehicle with an automatic transaxle has excessive vibration.
Technician A says that the vibration could be caused by worn engine/transaxle mounts.
Technician B says that the vibration could be caused by a misaligned engine/ transaxle subframe.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 4.The correct answer is C, both technicians.
Worn engine and transaxle mounts can cause vibration, but driveline vibration can also be
caused by an engine transaxle subframe that is damaged or not properly positioned and secured
to the vehicle.
5. A technician suspects that a faulty camshaft sensor causes a driveability complaint. The sensor
is equipped with a threewire connector. What type of sensor is this?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 5.The correct answer is A. Hall effect
switches are equipped with a threewire connector; magnetic reluctance types are equipped with a
twowire connector.
6. All of the following can cause a problem in the Hydroboost system EXCEPT:
, A. loose power steering pump belt
B. leaking power steering hoses
C. low power steering pump pressure
D. leaking check valve - CORRECT ANSWER - 6.The correct answer is D. A vacuum
check valve is used on a vacuum power booster. The Hydroboost system operates by using
power steering pump fluid pressure rather than vacuum, so all of the other choices would apply.
7. Technician A: says that if a wire is getting too hot, it's a sign of higherthannormal current
flowing through. Technician B says the wire would heat up if some of the individual strands are
broken Inside the wire insulation. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 7.The correct answer is C, both technicians. A
hot electrical wire means more electrons are trying to flow through it than the wire is capable of
carrying. Usually this is a sign of trouble. Typically, that trouble would be either a deterioration
of the wire, possibly due to a number of individual strands being broken in a conductor
consisting of many individual strands, or higherthannormal current flow, due to a problem in the
wiring or the load.
8. Technician A says electrical connectors can be disconnected with the ignition switch ON, as
long as the technician is using a ground strap. Technician B says when welding on a vehicle, the
technician needs to use a static wrist strap. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 8. The correct answer is D, neither technician.
Electrical connections should NEVER be disconnected with the ignition switch on. This creates
highvoltage spikes, which can permanently ruin delicate circuits. Static sensitive parts should be
handled using a wrist static strap to drain the static charge from your body. Disconnect any
computers before welding on a vehicle.
Questions and CORRECT Answers
Technician A says that when pressure testing a radiator cap, a special adapter is needed.
Technician B says the best way to check thermostat operation is while it is in the engine. Who is
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - The correct answer is A. Test the radiator cap
with the cooling system tester's radiator cap adapter. The thermostat can most effectively be
rested by removing it from the vehicle, and submerging it in coolant heater about l 5°]: (8°C)
above the normal thermostat opening temperature.
2. A technician Is checking resistance In an engine's spark plug wires using an ohmmeter. A
general rule Is to replace a wire if resistance is over:
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 2. The correct answer is B. A general rule is
to replace the wire if the resistance is over 30,000 ohms. The resistance of suspect wires can be
checked using an ohmmeter. To check resistance, disconnect the spark plug end and coil end of
one spark plug wire. Connect an ohmmeter lead to each end of the spark plug wire's terminals.
3. Technician A says that in an ignition system, the voltage supplied to the coil during starting is
battery voltage. Technician B says the coil uses electromagnetic induction to create high voltage.
Who is right?
A. Technician A only
B. Technician B only
,C. Both A and B
D. Neither A or B - CORRECT ANSWER - 3.The correct answer is C, both technicians.
Battery voltage supplies the primary side of the ignition coil with 12 volt cs. The coil uses
electromagnetic induction to create high voltage. When the voltage is reduced on the primary
side of the coil, the collapsing magnetic field induces a much higher voltage in the secondary
side and sends it through the secondary system in the spark plugs.
A Front Wheel Drive (FWD) vehicle with an automatic transaxle has excessive vibration.
Technician A says that the vibration could be caused by worn engine/transaxle mounts.
Technician B says that the vibration could be caused by a misaligned engine/ transaxle subframe.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 4.The correct answer is C, both technicians.
Worn engine and transaxle mounts can cause vibration, but driveline vibration can also be
caused by an engine transaxle subframe that is damaged or not properly positioned and secured
to the vehicle.
5. A technician suspects that a faulty camshaft sensor causes a driveability complaint. The sensor
is equipped with a threewire connector. What type of sensor is this?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 5.The correct answer is A. Hall effect
switches are equipped with a threewire connector; magnetic reluctance types are equipped with a
twowire connector.
6. All of the following can cause a problem in the Hydroboost system EXCEPT:
, A. loose power steering pump belt
B. leaking power steering hoses
C. low power steering pump pressure
D. leaking check valve - CORRECT ANSWER - 6.The correct answer is D. A vacuum
check valve is used on a vacuum power booster. The Hydroboost system operates by using
power steering pump fluid pressure rather than vacuum, so all of the other choices would apply.
7. Technician A: says that if a wire is getting too hot, it's a sign of higherthannormal current
flowing through. Technician B says the wire would heat up if some of the individual strands are
broken Inside the wire insulation. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 7.The correct answer is C, both technicians. A
hot electrical wire means more electrons are trying to flow through it than the wire is capable of
carrying. Usually this is a sign of trouble. Typically, that trouble would be either a deterioration
of the wire, possibly due to a number of individual strands being broken in a conductor
consisting of many individual strands, or higherthannormal current flow, due to a problem in the
wiring or the load.
8. Technician A says electrical connectors can be disconnected with the ignition switch ON, as
long as the technician is using a ground strap. Technician B says when welding on a vehicle, the
technician needs to use a static wrist strap. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - CORRECT ANSWER - 8. The correct answer is D, neither technician.
Electrical connections should NEVER be disconnected with the ignition switch on. This creates
highvoltage spikes, which can permanently ruin delicate circuits. Static sensitive parts should be
handled using a wrist static strap to drain the static charge from your body. Disconnect any
computers before welding on a vehicle.
