ASE G1 Exam Questions

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61.

Two technicians are discussing the diagnosis of a truck with a four-wheel-drive indicator lamp flashing in the instrument cluster. Technician A says a scan tool should be used to retrieve any Diagnostic Trouble Codes (DTCs) stored in the electronic control module. Technician B says the DTCs should be written down or recorded on the repair order. Who is correct?

  • Both A and B

  •  Neither A nor B

  • Technician A

  • Technician B

Correct answer: Both A and B

Technician A is correct because a flashing four-wheel-drive indicator lamp lets the driver know a fault is detected by the electronic control module. As a fault is detected, the electronic control module stores a DTC to aid the technician in diagnosis. A scan tool is used to retrieve the DTCs stored in the electronic control module.

Technician B is also correct because many service operations will set new DTCs or erase stored DTCs. It is a good idea to record all DTCs on the repair order before moving on to other diagnostic procedures.

62.

Which of the following would be the MOST LIKELY cause for drum brakes to be out of adjustment?

  • A seized star wheel adjuster

  • A misadjusted wheel cylinder

  • A seized wheel cylinder

  • An undersized brake drum inside diameter

Correct answer: A seized star wheel adjuster

Star wheel adjusters are a common self-adjusting mechanism used on drum brake systems. The star wheel is turned on threads by the automatic adjuster lever to automatically adjust the brake shoes closer to the brake drum. Self-adjustment takes place as the brake shoes wear. Star wheels tend to seize from rust and lack of lubrication and fail to maintain proper brake shoe adjustment.

Wheel cylinders are not adjusted. Proper brake shoe adjustment allows for minimal wheel cylinder piston stroke during braking. A seized wheel cylinder would prevent drum brake operation and would not cause misadjusted brake shoes. An undersized brake drum inside diameter is not usually a concern for vehicles arriving for service. The inner brake drum diameter increases as it wears. Technicians should use a brake drum micrometer to determine if the inner diameter of a brake drum exceeds the specification.    

63.

Which of the following would be LEAST LIKELY to cause the red brake warning lamp to illuminate?

  • A disconnected brake fluid level switch

  • A short in the brake fluid level switch circuit

  • Low brake fluid level in the master cylinder reservoir

  • The parking brake is applied

Correct answer: A disconnected brake fluid level switch

The brake fluid level switch is located in the master cylinder reservoir. A disconnected brake fluid level switch will prevent the red brake warning lamp from illuminating on most vehicles. 

A shorted brake fluid level sensor circuit could cause the warning lamp to illuminate. If the circuit is operating properly, a brake fluid level sensor or a parking brake switch can illuminate the brake warning lamp.  

64.

Two technicians are discussing halfshaft inspection and service. Technician A says cracked, torn, or punctured Constant Velocity (CV) boots typically sling grease to nearby components. Technician B says most CV joints have a grease fitting for lubrication. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because cracked, torn, or punctured CV boots allow centrifugal force to sling the grease to nearby components. Technician B is incorrect because CV joints do not have grease fittings. Grease fittings are found on some universal joints.

65.

All of the following should be completed when performing a pre-alignment inspection EXCEPT:

  • Make sure the ball joints are lubricated

  • Check the tire pressure

  • Test drive the vehicle 

  • Make sure all the tires are the same size

Correct answer: Make sure the ball joints are lubricated

Before performing an alignment, the vehicle should be test driven. After the test drive, the tire pressure and condition should be checked. Ensure that all of the tires are the same size. 

Lubricating steering and suspension components as specified by the manufacturer is a recommended periodic service, but does not need to be completed as part of a pre-alignment inspection.

66.

Two technicians are discussing the application and testing of steering dampers. Technician A says steering dampers are usually used on front-wheel drive vehicles. Technician B says steering dampers should have the same resistance when being compressed as when being extended. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct because the steering damper is attached to the steering linkage and should have the same resistance to compression and extension.

Technician A is incorrect because steering dampers are most likely to be used on trucks and larger SUVs. 

67.

Two technicians are discussing the process of changing the engine oil and filter. Technician A states that prior to installing a spin on the type of oil filter you should check to see if the old filter gasket is stuck to the engine. Technician B states the vehicle's oil life monitor will reset automatically when the engine oil and filter are changed. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Gaskets of spin on oil filters tend to stick to the engine sealing surface. This usually occurs when a technician fails to apply a light coat of oil to the oil filter gasket prior to installation. After an oil change, the oil life monitor reset procedure will need to be followed - it will not reset automatically. 

68.

A customer has a concern about inoperative windshield washers. The washer pump can be heard operating. Which of the following is the LEAST LIKELY cause?

  • An open ground circuit leading to the washer pump

  • A low washer fluid level

  • A cracked rubber feed hose

  • Clogged washer nozzles

Correct answer: An open ground circuit leading to the washer pump

An opening on the ground side of the pump circuit would prevent the washer pump from operating and so the washer pump motor would not be heard operating.

Low washer fluid, a cracked rubber feed hose, and clogged washer nozzles could prevent the windshield washers from working while the pump is running. 

69.

Two technicians are discussing the inspection of transmission cooler lines designed with a section of rubber hose. Technician A says the rubber can develop cracks, become soft, and develop a leak. Technician B says transmission cooler line fittings rarely leak because they are usually soldered to the transmission case. Who is correct?

  • Technician A 

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct. Transmission cooler lines may leak if the rubber portion becomes cracked and soft. They may also fail if they are allowed to flex too much. For example, the case of a failed powertrain mount. Transmission fittings should be serviceable and should not be soldered.

70.

A rear window washer on a sport utility vehicle is inoperative. Which of the following is the LEAST LIKELY cause?

  • Low resistance in the washer pump washer circuit

  • The washer pump motor is defective

  • The nozzle is stopped up

  • The rear washer reservoir is empty

Correct answer: Low resistance in the washer pump power circuit

The washer pump power circuit is designed to have low resistance. Low resistance indicates electrical current can flow freely.

A defective washer pump motor will prevent the window washer from operating. A stopped-up nozzle can also prevent the washer from working, but the technician should be able to hear the pump working. The noise from the pump motor indicates the presence of electrical power and ground. Many sport utility vehicles have a separate washer reservoir for the rear glass. Some drivers may not be aware the rear window washer uses a separate reservoir and may not refill it.  

71.

Where can the vehicle manufacturer's recommended tire inflation pressure be found?

  • In the door jamb

  • In the glove box

  • In the trunk

  • On the sidewall of the tire

Correct answer: In the door jamb

When inflating the tires on a vehicle, use the vehicle manufacturer's recommended tire pressure, which can usually be found on a placard on the door near the latch or the door jamb. The tire placard also lists recommended tire sizes.

The maximum tire pressure is listed on the sidewall for general purposes only.

72.

Where are you most likely to find a routing diagram for belts?

  • Under the hood

  • In the door jamb

  • Affixed to the inner side of the glove box door

  • On the belt packaging

Correct answer: Under the hood

The belt routing diagram can usually be found under the hood. It may be near the radiator support or on the bottom side of the hood. 

73.

A technician is testing the vacuum check valve on a vacuum booster. The technician removes the vacuum check valve from the vacuum booster one minute after turning the engine off. As the technician removes the check valve:

  • Air should be heard rushing into the brake booster

  • The brake pedal should rise about one inch

  • A clicking sound should be heard from the anti-lock brake module

  • The fluid level in the master cylinder should rise

Correct answer: Air should be heard rushing into the brake booster

A properly operating vacuum booster check valve should hold a vacuum after the engine is turned off and should make a whooshing noise when the vacuum check valve is removed. The source of vacuum for the booster is typically the intake manifold vacuum. Some vehicles equipped with diesel engines have a vacuum pump to provide vacuum. The vacuum booster check valve is designed to hold vacuum in the booster in the event of an engine stall. This would allow the driver to have brake assist for one complete stop if the engine stalled. 

The brake pedal released height, the anti-lock brake system module, and the master cylinder reservoir fluid level should be not be affected by this test.

74.

Technician A says center support bearings are used on one-piece driveshafts. Technician B says driveshafts must be removed to replace the center support bearing. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct. Two-piece driveshafts are supported in the front by the transmission, in the middle by a center support bearing, and in the back by the differential. The driveshafts must be removed to service the center support bearing.

Technician A is incorrect because one-piece driveshafts do not need to be supported in the center. 

75.

Which of the following is a handheld battery tester with small cables that attach to the battery posts?

  • Capacitance tester

  • Specific gravity tester                                                                                                                                                                                                                                                                                             

  • Refracrometer

  • Load tester

Correct answer: Capacitance tester

The capacitance battery tester uses a small amount of current to test automotive batteries and does not need a platform, cables, or clamps that are capable of carrying more than one hundred amps of electrical current. They are typically handheld devices and are menu-driven for easy operation. Capacitance battery testers do not require extensive safety and technical training prior to operation.

Specific gravity testers and refractometers test the battery's electrolyte. Safety measures must be followed because both tools require the removal of a sample of electrolyte from the battery cells. Battery load testers test the performance of the battery by applying a high current load. This machine must carry more than 100 amps of current and must have large cables and clamps. Strict safety procedures must be followed when using battery load testers.  

76.

A customer complains about a brake pedal that slowly sinks to the floor when the vehicle is stopped. Which of the following is the MOST LIKELY cause?

  • A failed master cylinder seal

  • Worn brake pads

  • A stuck piston in a brake caliper

  • A failed proportioning valve 

Correct answer: A failed master cylinder seal

A brake pedal that moves slowly toward the floor when stopped or when constant light pressure is applied is an indication of a master cylinder that is bypassing internally. This condition is not usually evident upon sudden brake application. No external leaks will be visible, but a faulty seal in a master cylinder can cause the fluid to bypass internally and allow the brake pedal to sink upon steady brake application.

Worn brake pads will not cause a change in brake pedal height. A stuck brake caliper piston and a failed proportioning valve may increase pedal effort but would not cause the brake pedal to sink to the floor..  

77.

Which of the following is NOT used to recalibrate a steering angle sensor?

  • Targets set up in front of the vehicle

  • The software for the wheel alignment machine

  • A scan tool

  • An onboard module

Correct answer: Targets set up in front of the vehicle

Special targets are set up in front of a vehicle to calibrate cameras for advanced driver assist systems such as collision avoidance, lane keep assist, and adaptive cruise control, but are not used to calibrate steering angle sensors.

Many modern wheel alignment machines have software that will calibrate steering angle sensors. Many higher-end scan tools also have features that will calibrate steering angle sensors. Some vehicles have software built into the onboard module to calibrate the steering angle sensors automatically.

78.

A technician who consulted the owner's manual is checking the transmission fluid level with the engine running. Which of the following would be the MOST LIKELY specified transmission fluid temperature when checking the fluid level?

  • 185 degrees Fahrenheit 

  • 110 degrees Fahrenheit

  • 295 degrees Fahrenheit

  • 375 degrees Fahrenheit

Correct answer: 185 degrees Fahrenheit

The fluid level rises as the fluid temperature increases and should be at a specified temperature when checking the fluid level. 185 degrees Fahrenheit falls within the range or is the closest to most manufacturers' specifications for transmission fluid temperature when checking the fluid level.

110 degrees Fahrenheit is too low for transmission fluid at operating temperature. 295 and 375 degrees Fahrenheit indicate a transmission temperature above the normal operating range.

79.

An engine has more than one oil leak. Technician A says placing dye in the oil can help locate the sources of the leak. Technician B says  a faulty PCV system could be the cause of the leaks. Who is correct?

  • Both technicians

  • Technician B only

  • Technician A only

  • Neither A nor B

Correct answer: Both Technicians

Approved dye that is visible when illuminated with an ultra violet light is commonly added to fluids of the automobile to make it easier for technicians to locate the source of a leak. PCV systems that are restricted or altered can allow the engine crankcase to pressurize and cause one or more oil leaks. The PCV system is considered the root cause of this oil leak.

80.

Technician A says the red brake warning light may indicate the brake fluid level is low. Technician B says the ABS warning light may indicate the parking brake is set. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct. The red brake light and the ABS warning light are used for different purposes. The red brake warning light may indicate a low brake fluid level, a loss of hydraulic pressure in the system, or that the parking brake is set. It is not safe to drive a vehicle with a red warning lamp illuminated.

Technician B is incorrect because the amber ABS light indicates that a fault exists in the anti-lock braking system. This warning lamp indicates the anti-lock braking system is not operative and the vehicle is much more likely to skid.