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Quiz Session - Attempts With Random Questions

ASE G1 Exam Questions

Page 10 of 10

181.

A technician retrieves a Diagnostic Trouble Code (DTC) for an evaporative emissions (EVAP) system leak. Which of the following is the LEAST likely cause for the code to be set?

  • The fuel tank is empty

  • The gas cap is not sealing

  • A solenoid is malfunctioning

  • An evaporative system hose is damaged

Correct answer: The fuel tank is empty

The evaporative emissions (EVAP) system is an emissions system used to prevent fuel vapors from entering the atmosphere. Any leak will store a corresponding DTC and turn on the check engine light. An empty fuel tank will not cause fuel vapors to leak into the atmosphere. A malfunctioning solenoid, a faulty gas cap, and a damaged evaporative system hose can cause fuel vapors to enter the atmosphere and set up a DTC.   

182.

Technician A says modern transmissions use a universal fluid with improved friction modifiers and can be used in all light duty vehicles except those made by European manufacturers. Technician B says service procedures should always be consulted before performing an automatic transmission service. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct. The OEM service procedures should be consulted to ensure a proper automatic transmission service is performed.

Technician A is incorrect. Transmission fluid specifications vary greatly between manufacturers. Always use the transmission fluid specified by the manufacturer.

183.

What typically happens when diesel exhaust fluid (DEF) becomes extremely low?

  • The engine goes into reduced power mode

  • The check engine light illuminates

  • Nothing other than a warning message turns on

  • The driver is temporarily unable to see any warning messages

Correct answer: The engine goes into reduced power mode

When the diesel exhaust fluid becomes low, a warning light turns on. If the level becomes extremely low, the engine will go into reduced power mode, forcing the driver to get the vehicle serviced.

184.

The owner of a new vehicle has a concern about the upshift feel. Technician A says Continuously Variable Transmissions (CVTs) do not shift gears. Technician B says new transmissions need to be driven about three thousand miles for a break-in period. After that, the transmission should have the correct shift feel. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct. CVTs have two variable pulleys and a band to transmit power at an infinite number of ratios without the need for traditional upshifts or downshifts. Some CVTs have the feel of upshifting and downshifting due to software programming. This alleviates some customer concerns.

Technician B is incorrect. Modern automobiles should perform very similar in the first few miles of operation as they do with tens of thousands of miles on the odometer.

185.

Two technicians are discussing transmission shift linkage. Technician A says misadjusted shift linkage could be the cause of a no crank condition. Technician B says misadjusted linkage can prevent a vehicle from entering or staying in the selected gear. 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 misadjusted or worn transmission shift linkage can prevent the vehicle from starting while the selector is in the park position. The transmission range sensor must detect a park or neutral gearshift position to complete the start circuit. A misadjusted transmission range sensor can cause the same concern. Technician B is also correct. Misadjusted or worn linkage can prevent the transmission from being placed fully in the correct gear. This condition can cause the transmission to move out of a selected gear and possibly to another.

186.

Technician A says the steering angle sensors are typically mounted on the tie rod ends. Technician B says vehicles with electronic stability control often need to have the steering angle sensor input recalibrated after a wheel alignment. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct. Many vehicles equipped with electronic stability control need the steering sensor input recalibrated after adjusting the wheel alignment angles. The stability control module needs a correct input for the straight ahead position as well as a very precise measurement of left or right turning angles.

Technician A is incorrect because the steering angle sensor is located on the steering column or on the rack and pinion assembly. The sensor needs to sense driver input as a number of degrees rotation. 

187.

A newly replaced high pressure power steering hose is leaking on a light duty truck. The old hose was leaking in the middle of the hose and the new hose is leaking at the power steering pump fitting. Which of the following procedures is MOST LIKELY to correct this condition?

  • Replace the O-ring on the end of the hose

  • Pour some liquid leak sealer into the power steering reservoir

  • Wrap some Teflon tape on the threads of the fitting

  • Loosen the fitting and retighten it

Correct answer: Replace the O-ring on the end of the hose

Most power steering hose fittings on modern automobiles use O-rings to seal the fittings at each end. A leaking fitting on a newly installed power steering hose usually indicates a problem with an O-ring. Any concern about an O-ring calls for an O-ring replacement. Some technicians elect to reuse the old O-ring or accidentally cut or tear the new O-ring while installing the new hose, either of which would cause a leak in a newly installed hose.

A liquid leak sealer is not likely to stop the leak and it is difficult to determine the effects of the additives on other power steering hydraulic components. Teflon tape coats the threads of the fitting. The fitting threads are not designed to seal hydraulic pressure, but are designed to hold the O-ring against the mating surfaces of the fitting. Loosening and retightening the fitting will not correct an O-ring failure and is unlikely to stop a leak in a power steering fitting.

188.

Which of the following would be the MOST LIKELY maximum specified starter current draw for an eight-cylinder gasoline engine?

  • 200 amps

  • 450 amps

  • 90 amps

  • 65 amps

Correct answer: 200 amps

The maximum current starter draw specifications for eight-cylinder gasoline engines is around 200 amps. High efficiency permanent magnet starters will use slightly less current than a traditional electromagnet starter.

189.

Which of the following is NOT a method of bleeding hydraulic brakes?

  • Bypass bleeding

  • Pressure bleeding

  • Vacuum bleeding 

  • Manual bleeding 

Correct answer: Bypass bleeding

After opening the hydraulic brake system for service, the brakes must be bled to remove air from the hydraulic system. This can be done through pressure bleeding, vacuum bleeding, or manual bleeding. 

190.

Technician A says the hydraulic system should be adjusted if the clutch is slipping. Technician B says air may be bled from the clutch hydraulic system. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct. Manufacturers have detailed procedures for bleeding the hydraulic clutch system. This procedure is typically performed when one or more hydraulic clutch components have been replaced. Many slave cylinders have a bleeder valve that allows the technician to bleed the system, similar to procedures used for bleeding hydraulic brakes. 

Technician A is incorrect because hydraulic clutch systems typically do not have procedures for periodic adjustment of hydraulic clutches.

191.

Toe adjustments are made at the:

  • Tie rod ends 

  • Toe shims

  • Control arms

  • Steering gear

Correct answer: Tie rod ends

All modern vehicles have toe adjustments at the tie rod ends. Toe adjustments are usually made by loosening the jam nut on the inner tie rod and turning the threaded inner tie rod into or out of the outer tie rod incrementally. This makes the inner tie rod and outer tie rod assembly longer or shorter to adjust the toe. Be sure to tighten the jam nut per service procedures after making the adjustment.

192.

A technician notices a loud clunk when shifting from reverse to drive. Which of the following steps would be LEAST likely to be one of the next steps in the diagnostic process? 

  • Adjust the forward clutch to reduce the clearance.

  • Hold the brake firmly, set the parking brake, open the hood, and have an assistant observe engine movement when shifting from reverse to drive.

  • Check the fluid level and condition.

  • Turn the engine off and visually inspect the powertrain mounts for cracks or other damage that could cause excessive powertrain movement.

Correct answer: Adjust the forward clutch to reduce the clearance.

Any work done on an internal clutch of an automatic transmission is considered to be a service procedure and not part of the diagnostic process. Changing clearances requires the exchange of parts within the clutch. 

Holding the service and parking brakes firmly and checking for powertrain movement is a common practice for diagnosing powertrain mount issues. Observe all safety procedures set by the automobile manufacturer. Visual inspection and checking fluid level and condition are also systematic steps in diagnosing the cause of a clunk noise during a test drive.

193.

A driver has a concern about excessive vibration that can be felt in the steering wheel and seat. The vibration is noticed any time the engine is running. What is the MOST LIKELY cause of the vibration?

  • A worn or damaged powertrain mount

  • A damaged transmission output shaft

  • A transmission that is overfilled with fluid

  • A restricted automatic transmission filter

Correct answer: A worn or damaged powertrain mount

The purpose of powertrain mounts is to isolate vibration from the passenger compartment. Powertrain mounts are also called engine mounts, transmission mounts, or motor mounts. Powertrain mounts can break and allow excessive movement in the engine and transmission when the vehicle is accelerating from a stop. Powertrain mounts that are not broken and allow excessive movement can compress and lose their cushioning effect. This loss of cushioning effect will cause abnormal vibration throughout the passenger's compartment. This can occur any time the engine is running.

Transmission output shaft vibrations will only occur when the vehicle is moving. A restricted filter and an overfilled transmission is not likely to cause a vibration any time the engine is running.

194.

Two technicians are discussing the process for adding distilled water to a 12-volt automotive battery. Technician A says the plates should be submerged after the battery is filled. Technician B says the cells should be filled until the water and electrolyte mixture reaches the top of the battery. Who is correct?

  • Technician A

  • Both A and B

  • Technician B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because a properly-filled battery will have an electrolyte level above the top of the plates in each cell. If the plates are not submerged in each cell, the battery life will be reduced greatly.

Technician B is incorrect because the level of electrolyte should be between the top of the plates and the top of the battery case. As a battery is charged, the level of electrolyte expands. If the electrolyte level is too high, the expanding electrolyte will spill over the top of the battery and cause damage to surrounding components and paved surfaces. 

195.

Hydro-boost systems use power steering fluid pressure for which of the following?

  • Braking 

  • Engine cooling

  • Transmission control 

  • Engine performance

Correct answer: Braking

The hydro-boost system uses power steering fluid pressure for both steering assist and braking assist. The hydro-boost unit is used in place of the vacuum brake booster. 

196.

Which of the following digital multimeter settings allows the technician to hear a sound (created by the multimeter) when a low resistance condition is present in a circuit?

  • Continuity

  • Voltage

  • Amps

  • Ohms

Correct answer: Continuity

Most digital multimeters have a setting that allows the technician to check for continuity in a circuit without looking at the display. When the leads of the multimeter are touching two wires or components of the circuit that have continuity, an audible beep is transmitted. If a circuit or component has low resistance, it is described as having continuity. Circuit wiring needs to have low resistance to operate properly. High resistance impedes current flow in a circuit and it will not operate as intended. 

197.

A customer has a concern about a squeaking noise that is heard during acceleration. The frequency of the squeaking noise increases as the vehicle speed increases. This noise is not heard upon deceleration. Technician A says a likely cause is a worn or damaged universal joint. Technician B says a likely cause is a worn or damaged center support bearing. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct. A universal joint that is dry (lacking grease) will wear and become damaged. This will typically cause a squeaking noise upon acceleration that increases with road speed.

Technician B is incorrect. Center support bearing noises typically vary with driveline speed, but are typically the same on acceleration and deceleration. Damaged center support bearings can also cause rubbing, grinding, squeaking, and roaring noises.

198.

A technician uses an electrical measuring tool that clamps around a wire. This tool is designed to measure:

  • Amps

  • Volts

  • Electromotive force

  • Ohms

Correct answer: Amps

An electrical measuring tool that clamps around a wire is designed to measure current. The unit of measurement for current is amps. As current increases, the magnetic field around a wire increases and the clamp meter converts the strength of the magnetic field to an amperage reading. The circuit must be on in order to measure current.

A volt is the measurement of electrical pressure or electromotive force and is measured by touching the probes of a multi-meter to two points in a circuit. The unit of measurement for resistance is an ohm. Resistance is measured with the component or wire disconnected from the power source.

199.

Which of the following is the MOST LIKELY cause of a brake pedal that is too high?

  • An out-of-adjustment pushrod 

  • Excessive brake lining wear

  • A seized brake caliper piston

  • A restricted brake hose

Correct answer: An out-of-adjustment pushrod

A pushrod that is out of adjustment and too long can result in a brake pedal that is too high. The brake pedal should have a slight amount of free-play. It should move about 1/4" before the brakes are activated. Brake pedal free-play is caused by the distance between the brake booster pushrod and the master cylinder primary piston. This free-play is necessary to assure the brakes are not applied when the pedal is released.

Brake lining wear would not affect brake pedal free-play. A brake fluid leak would cause a pedal that is too low after being pressed down, or depressed. A restricted brake hose may reduce brake pedal travel, but free-play would not be affected.

200.

Which of the following is part of the process of inspecting the brake caliper and the brake caliper mounting hardware?

  • Make sure the brake caliper guide pin moves freely in its bore and is lightly lubricated with the proper grease

  • Make sure the caliper guide pin is pressed into and does not move its bore

  • Make sure the caliper dust boot has a vent hole

  • Make sure the bleeder screw will not be loosened with hand tools

Correct answer: Make sure the brake caliper guide pin moves freely in its bore and is lightly lubricated with the proper grease

The brake caliper guide pins should move freely in their bore. They should move easily by hand and should be lightly lubricated with the brake caliper grease.

Any hole in a brake caliper dust boot will allow water and other debris to enter the brake caliper piston bore. It is good practice to check that the brake caliper bleeder screw can be loosened before performing any repair on the disc brake assembly. Occasionally, a brake caliper bleeder screw will seize in its threads and cannot be loosened. Brake caliper screws can also break when a technician attempts to loosen them, requiring replacement of the brake caliper.  

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