ASE MLR Certification Test Questions &
Answers
Both A and B - ANSWERTechnician observes that the brake fluid level is at the "Min"
mark in the master cylinder reservoir. Tech A says that worn front pads could be the
cause. Tech B says that a leak in the brake hydraulic system could be the cause. Who
is right?
AnswerA only - ANSWERThe tires of a vehicle are being rotated and balanced. Tech A
says that the wheel weight retaining clips must be matched to the rim profile. Tech B
says that directional tires are rotated in a criss-cross pattern. Who is right?
AnswerSafely exit the building - ANSWERWhen a shop fire cannot be immediately
contained, the best thing to do is warn others in the area, and:
Answer300 amps for 15 seconds - ANSWERA fully charged battery rated at 600 CCA,
the ambient temperature is 70 degrees which of these current and time periods should
be used?
AnswerB only - ANSWERA vehicle's halogen headlamp bulbs are being replaced.
Technician A says the glass part of the bulb can only be handled with bare hands.
Technician B says the headlamp may need to be removed. Who is right?
Answer0.728 - ANSWEROn a Metric Micrometer upper sleeve reading 5.0mm with
lower sleeve reading 0.50mm and a thimble reading of 0.01mm what is the overall
reading?
AnswerA only - ANSWERThe fuel filter on a fuel-injected vehicle is being replaced.
Tech A says the fuel pressure should be relieved before removing the filter. Tech B
says that the arrow on the fuel filter should point towards the fuel tank. Who is right?
AnswerThe brake pedal feels low and spongy - ANSWERWhich of these is an
indication of air in the brake hydraulic system?
AnswerAnaerobic - ANSWERWhich of these cures in the absence of air?
AnswerFluid contaminated brake linings - ANSWERA grabbing brake condition can be
caused by any of these EXCEPT:
AnswerVisually verify that the oil filter gasket is properly installed - ANSWERWhen
performing an oil filter change on a vehicle with a spin on oil filter, the technician must:
, AnswerVoltage regulation - ANSWERA vehicle's battery prematurely fails. A charging
system output test shows the generator (alternator) is producing a constant 16.0 volts.
This could indicate a failed:
AnswerSeal should be lubricated with transmission fluid - ANSWERA transmission
equipped with a filter is being serviced. When installing the new filter, the:
AnswerA only - ANSWERTechnician A says that disconnecting the negative battery
cable may be required to disable the air bag system. Technician B says that a self-
powered test light can be used to test air bag system components. Who is right?
AnswerA only - ANSWERTechnician A says that disconnecting the negative battery
cable may be required to disable the airbag system. Technician B says that a self-
powered test light can be used to test air bag system components. Who is right?
AnswerReplace the high-pressure hose - ANSWERWhile inspecting a vehicle's power
steering system, the technician observes a fluid leak coming from the high-pressure
hose crimp connection. To repair the leak the technician should:
AnswerAir in the cooling system - ANSWERAfter a coolant thermostat replacement, the
engine overheats. This could be caused by:
AnswerThe spark plugs threads should be started using a ratchet - ANSWERSpark
plugs are being replaced on a vehicle. Any of the following may be true EXCEPT:
AnswerDepartment of Transportation (DOT) - ANSWERBrake fluid must meet
minimum standards that are required by the:
AnswerA only - ANSWERTechnician A says that excessive play of the inner tie rod
indicates that the inner tie rod must be replaced. Technician B says that a torn bellows
boot on the rack and pinion indicates that the outer tie rod end must be replaced. Who
is right?
AnswerThe same gauge size as the wiring it is protecting - ANSWERA fusible link
should be:
AnswerA only - ANSWERA floating front brake caliper is being replaced. Technician A
says that after installation, the brake hose to caliper fitting should be checked for leaks.
Technician B says that both caliper pins should be lubricated with DOT 4 brake fluid.
Who is right?
AnswerA only - ANSWERA driveshaft universal joint is being replaced and the
technician cannot install the retaining clip. Technician A says that a dislocated needle
bearing could be the cause. Technician B says that a damaged spline in the yoke could
be the cause. Who is right?
Answers
Both A and B - ANSWERTechnician observes that the brake fluid level is at the "Min"
mark in the master cylinder reservoir. Tech A says that worn front pads could be the
cause. Tech B says that a leak in the brake hydraulic system could be the cause. Who
is right?
AnswerA only - ANSWERThe tires of a vehicle are being rotated and balanced. Tech A
says that the wheel weight retaining clips must be matched to the rim profile. Tech B
says that directional tires are rotated in a criss-cross pattern. Who is right?
AnswerSafely exit the building - ANSWERWhen a shop fire cannot be immediately
contained, the best thing to do is warn others in the area, and:
Answer300 amps for 15 seconds - ANSWERA fully charged battery rated at 600 CCA,
the ambient temperature is 70 degrees which of these current and time periods should
be used?
AnswerB only - ANSWERA vehicle's halogen headlamp bulbs are being replaced.
Technician A says the glass part of the bulb can only be handled with bare hands.
Technician B says the headlamp may need to be removed. Who is right?
Answer0.728 - ANSWEROn a Metric Micrometer upper sleeve reading 5.0mm with
lower sleeve reading 0.50mm and a thimble reading of 0.01mm what is the overall
reading?
AnswerA only - ANSWERThe fuel filter on a fuel-injected vehicle is being replaced.
Tech A says the fuel pressure should be relieved before removing the filter. Tech B
says that the arrow on the fuel filter should point towards the fuel tank. Who is right?
AnswerThe brake pedal feels low and spongy - ANSWERWhich of these is an
indication of air in the brake hydraulic system?
AnswerAnaerobic - ANSWERWhich of these cures in the absence of air?
AnswerFluid contaminated brake linings - ANSWERA grabbing brake condition can be
caused by any of these EXCEPT:
AnswerVisually verify that the oil filter gasket is properly installed - ANSWERWhen
performing an oil filter change on a vehicle with a spin on oil filter, the technician must:
, AnswerVoltage regulation - ANSWERA vehicle's battery prematurely fails. A charging
system output test shows the generator (alternator) is producing a constant 16.0 volts.
This could indicate a failed:
AnswerSeal should be lubricated with transmission fluid - ANSWERA transmission
equipped with a filter is being serviced. When installing the new filter, the:
AnswerA only - ANSWERTechnician A says that disconnecting the negative battery
cable may be required to disable the air bag system. Technician B says that a self-
powered test light can be used to test air bag system components. Who is right?
AnswerA only - ANSWERTechnician A says that disconnecting the negative battery
cable may be required to disable the airbag system. Technician B says that a self-
powered test light can be used to test air bag system components. Who is right?
AnswerReplace the high-pressure hose - ANSWERWhile inspecting a vehicle's power
steering system, the technician observes a fluid leak coming from the high-pressure
hose crimp connection. To repair the leak the technician should:
AnswerAir in the cooling system - ANSWERAfter a coolant thermostat replacement, the
engine overheats. This could be caused by:
AnswerThe spark plugs threads should be started using a ratchet - ANSWERSpark
plugs are being replaced on a vehicle. Any of the following may be true EXCEPT:
AnswerDepartment of Transportation (DOT) - ANSWERBrake fluid must meet
minimum standards that are required by the:
AnswerA only - ANSWERTechnician A says that excessive play of the inner tie rod
indicates that the inner tie rod must be replaced. Technician B says that a torn bellows
boot on the rack and pinion indicates that the outer tie rod end must be replaced. Who
is right?
AnswerThe same gauge size as the wiring it is protecting - ANSWERA fusible link
should be:
AnswerA only - ANSWERA floating front brake caliper is being replaced. Technician A
says that after installation, the brake hose to caliper fitting should be checked for leaks.
Technician B says that both caliper pins should be lubricated with DOT 4 brake fluid.
Who is right?
AnswerA only - ANSWERA driveshaft universal joint is being replaced and the
technician cannot install the retaining clip. Technician A says that a dislocated needle
bearing could be the cause. Technician B says that a damaged spline in the yoke could
be the cause. Who is right?
