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Quiz Session - Attempts With Random Questions

ASE G1 Exam Questions

Page 3 of 10

41.

Which of the following often requires a special spanner-like tool for service?

  • Rear brake pads

  • Front brake pads

  • Master cylinder 

  • Brake booster

Correct answer: Rear brake pads

Many rear brake calipers have an integral parking brake. When the parking brake is applied, the pads are mechanically forced against the rotor. To retract the caliper for service, the piston must be screwed back into its bore using a special spanner-like tool.

42.

Technician A says if the fan shrouding is missing from a vehicle, engine overheating may result. Technician B says belt-driven fans have an electric clutch that allows for decoupling at higher speeds. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct. The fan relies on shrouding to direct air through the radiator and fan blades. Shrouding that has been damaged or removed can cause overheating. Older vehicles use a belt-driven mechanical fan to draw air through the radiator at lower vehicle speeds. Belt-driven cooling fans typically have a thermostatic clutch which decouples as airflow and ambient temperatures cool the thermostatic fan clutch.  

43.

Which of the following would be LEAST LIKELY to occur when the driver selects defrost mode on the Heating, Ventilation, and Air Conditioning (HVAC) system?

  • The temperature blend door moves to the warmest position

  • The compressor turns on

  • Air is discharged toward the windshield

  • The electric cooling fans turn on

Correct answer: The temperature blend door moves to the warmest position

It is not necessary or practical for the blend door to automatically move to the warmest position when the HVAC system is set to defrost mode. The driver can set the discharge air temperature according to ambient conditions and personal preference. It is common for the air conditioning compressor and electric cooling fans to be on when the driver selects the defrost mode, because the air conditioning system removes moisture from the incoming air before it is heated by the heater core. The air that is heated by the heater core is then directed to the windshield area.

44.

A four-wheel-drive truck with independent front suspension is leaking differential fluid. Which of the following would be LEAST LIKELY to cause fluid to leak from the front differential on this vehicle?

  • A damaged wheel bearing

  • A restricted vent

  • An overfilled differential

  • A damaged pinion seal

Correct answer: A damaged wheel bearing

A damaged wheel bearing will not cause a front differential to leak on a truck equipped with independent front suspension. Halfshafts connect the axle housing to wheel hubs and the differential fluid does not reach the wheel bearings.

A restricted vent on any axle housing can cause a leak because the differential fluid and air in the axle housing expands when heated. The vent is located at the top of the axle housing and allows air to escape the housing as the fluid and air expands. With increased temperature, the expanding fluid will force its way past one or more seals if the vent is restricted. An overfilled differential will cause a leak because the seals on the differential housing are not designed to be submerged in fluid. A damaged pinion seal will cause a differential fluid leak near the pinion flange. Always check for up and down movement in the pinion flange caused by worn or damaged bearings. Worn or damaged pinion bearings frequently cause excessive pinion shaft movement which causes damage to the pinion seal.

45.

When inspecting powertrain mounts, you should look for all of the following EXCEPT:

  • Fluid leaking from the transmission pan

  • Fluid or oil leaking onto the powertrain mounts

  • Fluid leaking from the powertrain mounts

  • Cracked or missing rubber from the powertrain mount

Correct answer: Fluid leaking from the transmission pan

Transmission fluid leaking from the transmission pan usually does not reach the powertrain mount.

Oil and fluid leaking onto the transmission mounts will often deteriorate the rubber. Missing and cracked rubber in the powertrain mount is a sure sign of damage. Many modern powertrain mounts are fluid-filled and can develop leaks.

46.

Two technicians are discussing the removal, inspection, and installation of a driveshaft. Technician A says a universal joint that is being inspected after the driveshaft has been removed should be difficult to move because binding is acceptable. Technician B says you should make index marks on universal joints and flanges prior to removal. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct. Index marks should be placed on flanges, the driveshaft tube, and the universal joints as necessary to make sure the driveshaft is installed with the same orientation when compared to other driveline components. This assures a driveline vibration is not created when the driveshaft is installed. These marks can be made with paint. 

Technician A is incorrect because universal joints should move freely and without looseness. Binding and looseness are signs of a universal joint that needs service.

47.

Technician A says Absorbed Glass Mat (AGM) batteries can be charged at a higher rate than conventional lead-acid batteries. Technician B says fast charging of traditional lead-acid batteries on a setting of 20 amps or greater should only be done for a short period of time. Who is correct?

  • Technician B

  • Technician A

  • Neither A nor B

  • Both A and B

Correct answer: Technician B

Technician B is correct because fast charging of lead-acid batteries should only be done for a short period of time. A charge rate of 2 amps or less for several hours is the best way to charge a battery. Higher charge rates increase the internal battery temperature and increase the chances of damaging the battery.

Technician A is incorrect because AGM batteries should be charged at a low amperage and to a maximum charging voltage that should not typically exceed 14.7 volts. The manufacturer's charging requirements should be consulted before attempting to charge any AGM battery. Some AGM battery manufacturers recommend algorithmic charging that requires a special charger.

48.

What kind of fluid is used in a hydraulic clutch system?

  • Brake fluid

  • Automatic transmission fluid

  • Synthetic manual transmission fluid

  • Gear oil 

Correct answer: Brake fluid

Most modern vehicles use hydraulically controlled clutches. Brake fluid is used as hydraulic fluid in these systems. The clutch master cylinder generates the pressure used to release the clutch.

Automatic transmission fluid, manual transmission lubricants, and gear oils are not used in clutch hydraulic systems.

49.

Which of the following is NOT a step in checking automatic transmission fluid?

  • Place the transmission in neutral with the key off and the parking brake released. 

  • Check the fluid level on the dipstick.

  • Inspect the fluid on the dipstick for solid particles.

  • Check the temperature of the transmission fluid.

Correct answer: Place the transmission in neutral with the engine off and the parking brake released.

Automobile manufacturers have a variety of procedures for checking transmission fluid. None of these procedures call for placing the transmission in neutral, with the parking brake released and the engine off. Many manufacturers require the transmission to be within a narrow range of temperature when checking the fluid level.

50.

Two technicians are discussing throttle body/induction service. Technician A says this service can be used to remove carbon deposits. Technician B says the Mass Air Flow (MAF) sensor can be damaged during this service. Who is correct?

  • Both A and B

  • Technician A

  • Technician B

  • Neither A nor B

Correct answer: Both A and B

Both technicians are correct. A throttle body/induction service is used to remove carbon deposits from the throttle body and other induction system components. The MAF sensor can be damaged during this process if the wrong chemical is used for cleaning. Original Equipment Manufacturer (OEM) procedures should be followed for this process. Some OEMs do not have a provision for cleaning a MAF sensor.

51.

Two technicians are discussing the operation of an electric-hydraulic brake assist system. Technician A says electric-hydraulic systems use hydraulic pressure from the power steering pump for brake assist. Technician B says electric-hydraulic brakes incorporate an accumulator to maintain system pressure. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct because electric-hydraulic brake systems use an electric motor-driven pump to generate hydraulic pressure and an accumulator to store it.

Technician A is incorrect because electric-hydraulic brake assist systems do not use hydraulic pressure generated by the power steering pump. The hydro-boost systems use pressure from the power steering pump for brake assist.

52.

Which of the following methods should be used to clean an evaporator drain tube?

  • A piece of wire

  • An electric drill turning at the lowest setting

  • Drain cleaner

  • Muratic acid

Correct answer: A piece of wire

A piece of wire is the most commonly used item for cleaning evaporator drain tubes. The wire needs to be stiff enough to push through debris, and care should be taken to avoid damaging the aluminum evaporator core.

An electric drill should not be used because the evaporator core could be easily damaged and cause a refrigerant leak. Drain cleaner, muratic acid, or other harsh chemicals should not be used because residual offgasses could be harmful to the technician and the occupants of the vehicle.

53.

Which alignment angle would be MOST LIKELY to need adjustment after a tie rod replacement?

  • Front toe

  • Rear camber

  • Caster 

  • Front caster 

Correct answer: Front toe

Toe angle is directly dependent on tie rod adjustment. If the tie rods are replaced, the toe angle will have to be measured and adjusted.

54.

A customer has a concern about wet carpet accompanied by an offensive odor on the passenger's side floor of a late model vehicle. Which of the following would be LEAST LIKELY to cause this customer concern?

  • A leaking evaporator

  • A leaking heater core

  • A restricted evaporator case drain

  • Rainwater entering the vehicle

Correct answer: A leaking evaporator

A leaking evaporator would not cause liquid to accumulate on the floor of the vehicle. If an evaporator leaks, gaseous refrigerant comes out and will not cause liquid to accumulate on the floor of the vehicle.

Most heater cores are located on the passenger's side of the vehicle and are prone to leaking coolant on the floor of the vehicle. The coolant has a distinct odor and can also allow biological growth if left untreated. A restricted evaporator case drain will cause an overflow of condensation into the passenger compartment. Rainwater can enter the vehicle in a variety of ways. Some vehicles have issues with assembly, causing water leaks around the windshield or along seams in the body. Some water leaks develop as a result of a collision. Any accumulation of water in a passenger's compartment is likely to cause an offensive odor and can be a health hazard.

55.

Two technicians are discussing service procedures for a brake rotor that is difficult to remove. Technician A says the rotor may have screws holding it to the hub. Technician B says some rotors cannot be separated from the hub. Who is correct?

  • Both A and B

  • Technician A

  • Technician B

  • Neither A nor B

Correct answer: Both A and B

Both technicians are correct. Technician A is correct because many imported vehicles have Phillips head screws to secure floating rotors to the wheel hubs. Technician B is also correct because some rotors are integrated into the wheel hub and the wheel bearings must be removed to service the rotor and hub assembly. Floating rotors often get stuck on the hub when rust develops between the rotor and the hub. A light application of penetrating oil and gently tapping on the rotor near the wheel studs usually allows for the removal of the rotor from the hub.

56.

Which of the following is the MOST LIKELY cause of a Constant Velocity (CV) joint failure?

  • Dirt and water contamination

  • Steering the vehicle left and right excessively

  • Uphill or downhill driving

  • Excessively operating the vehicle in reverse gear

Correct answer: Dirt and water contamination

Dirt and water can enter the CV joint if a CV boot is torn or if a CV boot clamp is not securely holding the boot against the CV joint. The CV boot serves two purposes: one is to contain the CV joint lubricating grease, and the other is to prevent contaminants from entering the CV joint.

Steering the vehicle excessively is not likely to cause CV joint failure because CV joints are designed to operate while turning as well as while traveling forward. Uphill and downhill driving do not change the operating angle of the CV joint and will not reduce its service life. Reverse gear operation has no effect on the life of CV joints. 

57.

Which of the following is the LEAST LIKELY place to find the specification for the correct type of transmission fluid?

  • On the new vehicle window sticker

  • Stamped on the dipstick

  • In the owner's manual

  • In professional service publications

Correct answer: On the new vehicle window sticker

The new vehicle window sticker informs the buyer of the transmission type, but will not have information about transmission fluid.

The appropriate transmission fluid for the vehicle being serviced can be found in the owner's manual and in service publications. Many transmission dipsticks have the correct transmission fluid stamped on them.

58.

Which of the following would be the LEAST LIKELY place for a technician to access a cabin air filter?

  • Under the dash near the steering column

  • Under the hood near the cowl

  • Behind the glove compartment

  • Under the glove compartment

Correct answer: Under the dash near the steering column

Cabin air filters are not likely to be accessed from under the steering column because they must be located within the Heating, Ventilation, and Air Conditioning (HVAC) plenum. The plenum and intake air route are almost always located on the opposite side of the steering column. A technician can often gain access to a cabin air filter by removing the glove compartment and others can be accessed under the glove compartment. Some vehicles have an access point for the cabin air filter under the hood in the cowl area.

59.

Which of the following indicates the direction the rear wheels travel compared to the center line of the vehicle?

  • Thrust angle

  • Camber

  • Caster

  • Included angle

Correct answer: Thrust angle

The measurement of the thrust angle compares the centerline of the vehicle to the direction the rear wheels are traveling. If the rear wheels travel in a direction parallel to the vehicle centerline, the thrust angle is zero. 

60.

What is the BEST way to check A/C system performance?

  • Place a temperature probe in the center HVAC duct

  • Test drive the vehicle

  • Check for DTCs

  • Put your hand in front of the HVAC duct to see if it is cooling

Correct answer: Place a temperature probe in the center HVAC duct

The best way to determine if the HVAC system is cooling properly is to place a temperature probe in the center HVAC vent. Service specifications must be used because the discharge air temperature will vary with ambient temperature and humidity. 

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