ASE S1: Body Systems And Special Equipment Test! Book Quiz

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  • 1/37 Questions

    What is the function of a booster pump?

    • Improve engine starting
    • Improve coolant circulation
    • Enable the blower motor to blow faster
    • Help with engine shutdown
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About This Quiz

This ASE S1 certification quiz assesses knowledge on body systems and special equipment in buses. It covers troubleshooting for heating issues, windshield problems, blower malfunctions, and alarm systems, essential for automotive professionals.

ASE S1: Body Systems And Special Equipment Test! Book Quiz - Quiz

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  • 2. 

    An electronically controlled seat is not operating.After checking the system, a technician has foundthat there are 12 volts and a good ground at themotor, but the motor is not operating. What could bethe cause?

    • Defective motor

    • Blown fuse

    • Defective switch

    • Broken wire at the switch

    Correct Answer
    A. Defective motor
    Explanation
    The correct answer is A. If the motor is receiving
    12 volts and not operating in either direction, suspect a
    defective motor

    Rate this question:

  • 3. 

    For proper cooling system protection, recommendedantifreeze concentration should not exceed:

    • 35 percent

    • 45 percent

    • 50 percent

    • 65 percent

    Correct Answer
    A. 50 percent
    Explanation
    The correct answer is C. The maximum concentration
    of coolant solution should not exceed 50 percent
    coolant and 50 percent water for proper cooling
    system protection.

    Rate this question:

  • 4. 

    All of the following applies to a school bus fire extinguisherEXCEPT:

    • Must meet DOT requirements

    • Must be mounted in the driver’s area

    • Must be inspected monthly

    • Must be replaced every 6 months

    Correct Answer
    A. Must be replaced every 6 months
    Explanation
    The correct answer is D. A school bus fire extinguisher
    must meet DOT requirements, must be
    mounted in the driver’s area and the extinguisher
    should be inspected for proper pressure at least
    monthly

    Rate this question:

  • 5. 

    The primary purpose of radiator shutters is to:

    • Control air flow across the radiator

    • Keep leaves out of the radiator fins

    • Add to vehicle aerodynamics

    • None of the above

    Correct Answer
    A. Control air flow across the radiator
    Explanation
    The correct answer is A. Radiator shutters are designed
    to control air flow across the radiator core tubes.
    They employ horizontal vanes, much like window
    blinds, that open and close as a temperature sensor
    dictates. These shutters maintain a certain coolant temperature
    for efficient operation of the cooling system in
    a specified temperature range.

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  • 6. 

    Coolant continually comes out of the radiatoroverflow and there are bubbles in the radiator. Themost likely cause of this problem is:

    • Too much coolant in the cooling system

    • A clogged radiator

    • A stuck-open thermostat

    • Compression leakage into the cooling system

    Correct Answer
    A. Compression leakage into the cooling system
    Explanation
    The correct answer is D. Compression leakage
    puts hot gases into coolant, which not only is the
    direct cause of the bubbles, but also causes coolant
    loss. This happens because the gases constantly build
    system pressure to the point where the cap opens. Too
    much coolant in the system would empty through the
    overflow. A clogged radiator would cause overheating.
    A stuck-open thermostat would cause the coolant to
    build even less pressure than is normal, meaning no
    coolant loss would occur.

    Rate this question:

  • 7. 

    Cooling system pressure is maintained by the:

    • Fan clutch

    • Water pump

    • Thermostat

    • Radiator cap

    Correct Answer
    A. Radiator cap
    Explanation
    The correct answer is D. Cooling system pressure
    is maintained by the use of the radiator pressure cap. A
    defective fan clutch will not allow the efficient transfer
    of heat from the coolant to the atmosphere. A defective
    water pump will not allow proper coolant circulation,
    and a defective thermostat, depending on the condition,
    will either overheat or overcool the engine.

    Rate this question:

  • 8. 

    A smeary film on the windshield may be evidence of:

    • An evaporator coil leak

    • Water valve leak

    • A heater core leak

    • A restricted drain hose

    Correct Answer
    A. A heater core leak
    Explanation
    The correct answer is C. A leaking heater core often leaves a residue of antifreeze (which does not readily evaporate) on the windshield.

    Rate this question:

  • 9. 

    Low heater output can be caused by all of the followingEXCEPT:

    • Low engine coolant

    • Stuck open thermostat

    • Restricted water valve

    • Disengaged clutch-type radiator fan

    Correct Answer
    A. Disengaged clutch-type radiator fan
    Explanation
    The correct answer is D. A disengaged clutch-type
    radiator fan would not cause low heater output.

    Rate this question:

  • 10. 

    A wheelchair lift has a drifting/leakdown problem.All of the following could be the cause EXCEPT:

    • An open manual valve

    • A leaking seal

    • Internally leaking pump

    • Low fluid level

    Correct Answer
    A. Low fluid level
    Explanation
    The correct answer is D. Low fluid level will not
    cause the lift to leak down. All of the other answers will
    cause some type of bypassing of fluid from pressurized
    areas, thereby allowing the lift to leak down.

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  • 11. 

    Technician A says each triangle reflector must be acollapsible equilateral triangle. Technician B says thefront and back of the exposed leg surfaces must becovered with red reflective material. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are
    right. According to Federal Motor Vehicle Safety Standards,
    each reflector shall be a collapsible equilateral
    triangle, with legs not less than 17-in. long and not less
    than 2-in. wide. The front and back of the exposed leg
    surfaces shall be covered with red reflective material
    not less than 1/2-in. in width.

    Rate this question:

  • 12. 

    Technician A says that a crack in the frame rail orcrossmember is cause for the bus to be taken out ofservice. Technician B says that loose or missing bodyfasteners can be replaced at the vehicle’s next serviceinterval. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. The vehicle should be
    taken out-of-service until repairs can be made if any
    of the following conditions exist: if there is any crack
    in either frame rail or any crossmember; if there is any
    loose or missing rivet or other fastener securing a crossmember
    to the frame.

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  • 13. 

    Technician A says a first aid kit should bemounted in the driver’s area. Technician B says anytype of commercially-available kit can be used. Whois right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. A first aid kit should be
    mounted in an easily accessible location in the driver’s
    area. The kit should be a type III classification (for portable
    use in mobile and/or outdoor settings where the
    potential for damage to the contents due to environmental
    factors and rough handling is significant).

    Rate this question:

  • 14. 

    An air operated school bus arm will not close.Technician A says the problem could be that the solenoidvalve is not dumping air. Technician B says theproblem could be a leaking air line. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. The solenoid valve is
    designed to dump the air when the stop arm is being
    closed. A leaking air line would most likely cause the
    arm not to open.

    Rate this question:

  • 15. 

    Technician A says ethylene glycol is the mostcommon chemical base for antifreeze. Technician Bsays propylene glycol is safer for the environment. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are
    right. Ethylene glycol is the most common chemical
    base for antifreeze. Propylene glycol is safer for the environment.

    Rate this question:

  • 16. 

    There is insufficient heat in the bus. Technician A says that air trapped in the cooling system could be the cause. Technician B says that a defective water valve could be the cause. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are right. An air blockage could prevent adequate coolant flow to the heater core and a defective water valve may block coolant flow if it does not open.

    Rate this question:

  • 17. 

    The correct term for the requirement that the interiorof large school buses provide occupant protectionwithout seat belts is called:

    • Departmentalization

    • Compractalization

    • Compartmentalization

    • Seat frame cushioning

    Correct Answer
    A. Compartmentalization
    Explanation
    The correct answer is C. NHTSA decided that
    the best way to provide crash protection in large school
    buses is through a concept called ‘compartmentalization.’
    This requires that the interior of large buses
    provide occupant protection so that occupants are protected
    without the need to buckle-up. Occupant crash
    protection is provided by a protective envelope consisting
    of strong, closely-spaced seats that have energyabsorbing
    seat backs.

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  • 18. 

    What component in the ‘fill for life system’ shouldbe replaced at regular intervals?

    • Fuel filter

    • SCA cartridge

    • Air cleaner

    • Heater filter

    Correct Answer
    A. SCA cartridge
    Explanation
    The correct answer is B. Extended life, or fully
    formulated coolants do not require supplemental coolant
    additives, and can be used in ‘Fill For Life’ systems.
    These systems incorporate a spin-on coolant filter that
    senses the corrosion level of the coolant and releases
    an SCA treatment to keep the coolant performing up
    to optimum levels. Cartridges with an SCA supply are
    available, but be careful not to use one along with an
    SCA additive.

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  • 19. 

    The emergency door alarm sounds constantlywhen the ignition switch is in the ON position. Thedoor has been checked and it is closed tightly. Whatcould be the cause?

    • A defective door alarm

    • A short to ground at the switch

    • An open at the door switch

    • An open at the fuse panel

    Correct Answer
    A. A short to ground at the switch
    Explanation
    The correct answer is B. A short to ground will
    cause the alarm to activate. A defective alarm would
    not operate at all, and an open would not allow current
    to flow at all.

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  • 20. 

    Technician A says school bus emergency exitscan be identified with non-reflective tape. TechnicianB says the total area of the emergency exits of eachschool bus is generally based on the designated seatingcapacity. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician B only
    Explanation
    The correct answer if B. School bus exits are generally
    based on the designated seating capacity of the
    vehicle. The exits must be clearly identified with retro
    reflective tape to guide occupants exiting the vehicle in
    case of an emergency.

    Rate this question:

  • 21. 

    Technician A says on an electronically-controlledstop arm, a return spring is used to bring the arm tothe closed position. Technician B says electronic stoparms are controlled using micro switches. Who isright?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician B only
    Explanation
    The correct answer is B. Electronic stop arms
    employ micro switches to control stop arm closure.
    Return springs are used on air and vacuum operated
    systems.

    Rate this question:

  • 22. 

    Technician A says seat belts are not required forpassengers in school buses with a Gross VehicleWeight Rating (GVWR) of 10,000 lbs. or more. TechnicianB says seat belts are not required for schoolbus drivers in buses under 10,000 lbs. GVWR. Who isright?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. Rather than requiring
    passenger seat belts on large school buses, NHTSA
    decided that the best way to provide crash protection
    to passengers is through a concept called ‘compartmentalization.’
    This requires that the interior of large buses
    provide occupant protection so that occupants are protected
    without the need to buckle-up.

    Rate this question:

  • 23. 

    An electric fan fails to engage. Technician A saysthat the problem could be a defective coolant temperatureswitch. Technician B says the thermostat maybe stuck open. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are
    right. Since the electric fan depends on coolant temperature
    to run, a faulty temperature switch may not
    correctly interpret coolant temperature. Therefore, the
    electric fan may not operate. Also, a thermostat that
    is stuck open will cause lower-than-normal engine
    temperatures, causing the coolant to be cooler than it
    should be when circulating through the engine. In this
    case, the fan may not operate.

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  • 24. 

    Technician A says if a bus is equipped with a catalyticconverter, coolant leaking into the exhaust systemcan be hard to troubleshoot. Technician B says ablocked heater core will not allow sufficient warm airto enter the bus. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are
    right. On buses equipped with catalytic converters, the
    heat of the converter can disguise coolant leaking into
    the exhaust. Because of the high temperatures generated
    by the converter, the coolant will heat into such a
    fine vapor that the leak may not be noticeable. Technician
    B is right because if the heater core is blocked, it
    will not heat up properly and therefore not allow sufficient
    heat to enter the bus.

    Rate this question:

  • 25. 

    The driver’s seat belt alarm and light operates constantlyeven when the seat belt is properly buckled.What could be the cause?

    • Stuck closed seat belt switch

    • Open at the seat belt alarm

    • Short at the seat belt light

    • Open at the fuse panel

    Correct Answer
    A. Stuck closed seat belt switch
    Explanation
    The correct answer is A. When the seat belt switch
    is stuck in the closed position, current is allowed to
    flow causing the warning buzzer to sound and the light
    to illuminate.

    Rate this question:

  • 26. 

    Technician A says hydraulic wheelchair lifts maynot operate well in extremely cold weather. TechnicianB says hydraulic wheelchair lifts are usually lighterthan electronic lifts. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. Hydraulic lifts tend not
    to work as efficiently in cold weather. Most electric
    lifts are lighter in weight than their electro-hydraulic
    counterparts, and operate consistently in temperature
    extremes.

    Rate this question:

  • 27. 

    A Type-D (greater then 10,000 pounds) school buscomes into the shop for inspection. It is noted thatthere are no seat belts on the passenger seats. TechnicianA says seat belts are required for this particularsize school bus. Technician B says that the bus canbe run with a special waiver as long as the seat beltsare on order. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Neither A or B
    Explanation
    The correct answer is D, neither technician is
    right. While no Federal requirement exists for seat
    belts on large school buses, states and localities are free
    to install them if they feel it is in the best interest of
    safety in their area. Small school buses, those with a
    GVWR under 10,000 pounds, must be equipped with
    lap or lap/shoulder belts at all designated seating positions.
    Since their sizes and weights are closer to those
    of passenger cars and trucks, seat belts in these vehicles
    are necessary to provide occupant protection

    Rate this question:

  • 28. 

    The main set of standards that govern school bussafety are called?

    • FMVSS

    • FMCSA

    • NHTSA

    • FHWA

    Correct Answer
    A. FMVSS
    Explanation
    The correct answer is A. Federal Motor Vehicle
    Safety Standards (FMVSS) were set to monitor and
    regulate motor vehicle safety. As the years passed, new
    standards were written with many of them encompassing
    school buses. As vehicles became more and more
    complicated, and new safety features were made available,
    standards had to be added or updated to cover the
    particular safety enhancements built into each vehicle.
    All vehicle manufacturers, no matter what kind of vehicle,
    must comply with FMVSS regulations.

    Rate this question:

  • 29. 

    Technician A says resistors are used to reduceblower motor speed. Technician B says temperatureis controlled by increasing or decreasing the flowof coolant passing through the heater core. Who isright?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are
    right. The fan switch directs current flow through one
    or more resistors to reduce blower motor speed. Temperature
    is controlled by increasing or decreasing the
    flow of coolant through the heater core.

    Rate this question:

  • 30. 

    When filling the engine with coolant to purge air,the fill rate should not exceed:

    • 2 gallons per minute

    • 6 gallons per minute

    • 5 gallons per minute

    • 8 gallons per minute

    Correct Answer
    A. 5 gallons per minute
    Explanation
    The correct answer is C. When filling the engine
    with coolant to purge air, the fill rate should not exceed
    5 gallons per minute.

    Rate this question:

  • 31. 

    A bus heater is not producing enough heat. Afterchecking the hoses running from the heater core andfinding them both to be hot, Technician A says theproblem could be a clogged heater core. TechnicianB says a misadjusted temperature control cable couldbe the problem. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician B only
    Explanation
    The correct answer is B. If both hoses leading to
    the heater core are hot, coolant is circulating through
    the heater core. One hose that is significantly cooler
    than the other would indicate a clogged heater core.
    However, if the temperature control cable is misadjusted,
    the temperature blend door may not allow
    enough warm air to enter the bus for sufficient heating.

    Rate this question:

  • 32. 

    An electrically-operated wheelchair lift is bindingwhen the operator tries to raise it. Technician A saysa defective interlock switch could be the problem.Technician B says a blown fuse or circuit breakercould be the problem. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Neither A or B
    Explanation
    The correct answer is D, neither technician is
    right. Interlock switches are designed to disable the
    lift or school bus when safe conditions do not exist. A
    blown fuse or circuit breaker wouldn’t allow the liftgate
    to operate at all.

    Rate this question:

  • 33. 

    A school bus driver is complaining of insufficientheat from the floor vents. Technician A says the problemcould be a leaking vacuum actuator. Technician Bsays the problem could be a stuck closed thermostat.Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. The vacuum actuator
    contains a spring-loaded diaphragm, one side of which
    is connected to the vacuum source. The other side is
    attached to an arm that moves the air door. Leaks or
    disconnected hoses will cause the doors to stay in the
    wrong position, thereby not allowing sufficient heat to
    enter the bus.

    Rate this question:

  • 34. 

    Technician A says a thermometer is needed totest a mechanical fan clutch. Technician B says anelectronic probe and timing light can be used tocheck a mechanical fan clutch. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are right. To
    test a mechanical clutch, you can use either a thermometer or
    an electronic temperature probe on the radiator near the inlet,
    and connect a timing light to the engine. Start the engine and
    strobe the fan to ‘freeze’ the blades, noting the engine speed.
    When the engine warms up, the fan should increase speed
    and the blades will appear to be moving in the strobe light. As
    the temperature drops, the fan should slow down. To speed
    the heating and cooling, block the radiator, but remember to
    remove your obstruction before the engine overheats.

    Rate this question:

  • 35. 

    The protective barrier forward of any designatedseating position without the rear surface of anotherpassenger seat is called:

    • Restrictive brace

    • Retaining barrier

    • Protective cushion

    • Restraining barrier

    Correct Answer
    A. Restraining barrier
    Explanation
    The correct answer is D. Each vehicle must be
    equipped with a restraining barrier forward of any
    designated seating position that does not have the rear
    surface of another passenger seat.

    Rate this question:

  • 36. 

    The blower operates only on high speed. Technician A says that a defective high-speed relay could be the cause. Technician B says that a defective blower resistor could be the cause. Who is right?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Both A and B
    Explanation
    The correct answer is C, both technicians are right. Generally, if one of the blower speeds does not work, the problem is a faulty resistor. If the high speed does not work, the problem could be the high-speed relay or fuse.

    Rate this question:

  • 37. 

    The driver of a bus is complaining that the outletair is coming from both the floor and dash vents atthe same time. Technician A says a stuck heater doorcould be the cause. Technician B says a vacuum leakat the heater control valve could be the cause. Who isright?

    • Technician A only

    • Technician B only

    • Both A and B

    • Neither A or B

    Correct Answer
    A. Technician A only
    Explanation
    The correct answer is A. If a door is shared by two
    functions, it may bind halfway, routing heat in two different
    directions. A vacuum leak at the heater control
    valve will cause the valve to either stay open or closed
    (depending on the configuration). The heater control
    valve only controls the temperature of the inside air
    and does not affect air routing.

    Rate this question:

Quiz Review Timeline (Updated): Mar 19, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 17, 2015
    Quiz Created by
    Bala Vishal
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