Benchmark 3 Flashcards
Third Benchmark Goose sent
A customer comes in stating that the red brake light came on in the dash. What should the technician do first?
A. remove the tires and check the condition of the brake pads
B. check the pedal free travel
C. check the brake fluid reservoir
D. retrieve the brake trouble codes
C. check the brake fluid reservoir
Technician A says brake fluid should be replaced at recommended intervals. Technician B says that brake fluid never needs to be replaced because it is in a sealed component. Who is right?
A, B, Both, Neither
A only
When the brake pad wear indicator contacts the brake rotor, a high-pitched squeal is generated. This sound indicates the pad lining needs to be replaced and has worn to:
A. 1/8”
B. 1/2”
C. 5/8”
D. 3/4”
A. 1/8”
Technician A says a brake pad wear indicators can be identified as a metal tab on the brake pad that contacts the brake rotor when pads need to be replaced. Technician B says some cars have electrical/electronic brake pad wear indicators. Who is right?
A, B, Both, Neither
Both
The owner complains of a red brake warning light intermittently coming on and going off while he/she drives down the road. Technician A says the problem could be a low brake fluid level. Technician B says the problem could be a fault in the ABS system. Who is correct?
A, B, Both, Neither
A only
When the parking brake is released, the red brake warning light remains illuminated. All of these could be the cause except a:
A. high brake fluid level
B. low brake fluid level
C. faulty parking brake switch
D. short to ground in the parking brake warning light circuit
A. high brake fluid level
While discussing parking brake systems, Technician A states that the parking brake is a mechanical means to apply the rear brakes. Technician B says that some vehicles apply the parking brake with an electric motor. Who is right?
A, B, Both, Neither
Both
A customer complains that there is a constant “squeal” coming from the left front wheel. The technician removes the left front wheel and determines the noise is coming from a brake pad wear indicator. What should be the next step for the technician?
A. bend the indicator back and tell the customer to replace the brake pads as soon as possible.
B. spray WD-40 on the indicator
C. machine the rotor
D. inform the customer the brake pads need to be replaced
D. inform the customer the brake pads need to be replaced
A customer complains that the brake indicator light comes on periodically but goes off when the parking brake pedal is lifted up. What is the most likely cause?
A. a bad parking light bulb
B. a misadjusted parking brake cable
C. worn parking brake pads
D. a defective fluid level switch
B. a misadjusted parking brake cable
While inspecting the brake lines on a vehicle, the technician notices a crack on the outside of a rubber brake hose, but the hose is not leaking any fluid. What should the technician do?
A. do nothing; the outside is just an extra cover
B. install some tape around the crack to keep dirt out
C. inform the owner of the vehicle that the brake hose needs to be replaced
D. install an upgraded metal line in its place
C. inform the owner of the vehicle that the brake hose needs to be replaced
When inspecting the steel brake lines on a vehicle, which of these is not inspected for?
A. kinks (wink) and dents
B. cracks and leaks
C. rust and loose fittings
D. mud and line diameter
D. mud and line diameter
One way brake fluid may be checked for contamination is by using a:
A. refractometer
B. hydrometer
C. special coated sight glass
D. strip of litmus-type paper
D. strip of litmus-type paper
Brake fluid is considered contaminated when it has absorbed a maximum of what percentage of water?
A. 2%
B. 10%
C. 15%
D. 50%
A. 2%
With the parking brake applied, a vehicle placed in gear is not held in place. Technician A states that the parking brake needs to be adjusted. Technician B says the service brake of a drum brake system should be inspected before adjusting the parking brake. Who is right?
A, B, Both, Neither
Both
Which is not a component of the red brake warning light system?
A. brake fluid level indicator
B. pressure differential switch
C. stop light switch
D. parking brake switch
C. stop light switch
While inspecting brake hoses, Technician A says a brake hose that has cracks should be replaced. Technician B says a brake hose that is bulging should be replaced. Who is right?
A, B, Both, Neither
Both
Technician A says, when performing a starter draw test, one needs to crank the engine at least 30 seconds. Technician B says that a starter draw test may be performed using an ohmmeter. Who is right?
A, B, Both, Neither
Neither
During a battery load test, a load is applied that is equal to one-half of the cold cranking amps for how many seconds?
A. 5
B. 15
C. 30
D. 60
B. 15
During an exterior vehicle inspection, a rear stop light is found to be inoperative. Technician A says a blown bulb could be the cause. Technician B says that poor connection at the bulb socket could be the cause. Who is right?
A, B, Both, Neither
Both
Technician A says charging a 12-volt auxiliary battery in a hybrid vehicle may require a special battery charger. Technician B says when replacing the 12-volt battery of a hybrid vehicle, the process is basically the same as servicing any other 12-volt battery. Who is correct?
A, B, Both, Neither
Both
The customer complains of a squealing noise coming from under the hood of the vehicle when it is first started. The technician has determined that the noise is coming from the alternator belt. What should be the next step?
A. check the condition of the belt
B. replace the belt
C. replace the alternator
D. replace the battery
A. check the condition of the belt
During a starter current draw test, 125 amperes is observed along with slow cranking speed. The manufacturer’s specification is 185-250 amperes. Which would be the most likely cause?
A. an open in the starter armature winding
B. a shorted starter solenoid
C. worn starter commutator and brushes
D. excessive resistance in the positive battery cable
D. excessive resistance in the positive battery cable
When determining the proper battery application for a vehicle, what factor(s) should be considered?
A. manufacturer’s recommendations
B. electrical components that the customer might have added
C. the conditions in which the vehicle is being used
D. all of the above
D. all of the above
When performing a service on a hybrid vehicle, what color is the high-voltage disconnect?
A. blue
B. orange
C. red
D. yellow
B. orange
Prior to performing a charging system test, a technician should:
A. drive the vehicle at least 5 miles in order to properly warm the engine
B. check the condition of the battery
C. turn on all accessories
D. turn on the headlights for 2 minutes
B. check the condition of the battery
While conducting a battery state-of-charge test, a technician observes 12.2 volts as available battery voltage. The battery should be:
A. replaced
B. recharged and retested
C. left alone; 12.2 volts is normal
D. load-tested
B. recharged and retested
What is the main reason to measure a battery’s state of charge?
A. it helps one see how many times the battery has been recharged
B. it indicates the battery’s condition
C. it determines the cold-cranking amps (CCA)
D. it shows if there is an excessive electrical drain
B. it indicates the battery’s condition
A customer complains that the right turn signal is inoperative but the left works correctly. What is the most likely cause?
A. a short to ground in the right turn signal circuit
B. a blown right turn signal bulb
C. a defective turn signal flasher
D. an open wire in the right turn signal circuit
B. a blown right turn signal bulb
All of these can be used to accurately aim headlights except:
A. an optical headlight aimer
B. a Hoppy headlight aimer
C. a wall chart
D. a garage door and a tape measure
D. a garage door and a tape measure
During a visual inspection, it is found that the serpentine belt is cracked and glazed. Technician A says the belt can be reused. Technician B recommends replacing the tensioner when the belt is replaced. Who is right?
A, B, Both, Neither
B only
A customer requests that his headlights be aimed. Technician A says that most modern cars do not have any adjustments to aim headlights. Technician B says that a way to aim headlights is to use a wall chart. Who is correct?
A, B, Both, Neither
B only
A customer complains the right rear brake light is out. What is the most likely cause?
A. a bad brake light switch
B. a broken wire
C. a short in the right rear tail lamp assembly
D. a bad bulb
D. a bad bulb
When one uses a VAT to test the alternator output, the green inductive pickup should be replaced around which cable, with the arrow pointing away from the battery?
A. negative battery cable
B. alternator battery cable
C. positive battery cable
D. starter positive cable
A. negative battery cable
When charging the 12-volt auxiliary battery of a hybrid vehicle, all of these precautions should be observed except:
A. never charging the 12-volt auxiliary battery with the hybrid system turned on
B. turning all accessories off
C. charging the battery at a fast rate of charge
D. first, correcting any parasitic drain problems
C. charging the battery at a fast rate of charge
When replacing a battery, Technician A says the new battery should have the same CCA as the one the vehicle has in it. Technician B says that the CCA rating does not matter as long as the battery is the right size for the battery box. Who is correct?
A, B, Both, Neither
A only
A battery state-of-charge test may be performed using a:
A. test light
B. fused jumper wire
C. DVOM
D. continuity tester
C. DVOM
Technician A says that a hybrid vehicle contains a 12-volt system as well as a high voltage system. Technician B says that a 12-volt system is not necessary on a hybrid vehicle. Who is right?
A, B, Both, Neither
A only
Technician A says a clogged cabin air filter has no effect on airflow from the HVAC system. Technician B says the blend-air door controls the temperature of the air coming out of the vent outlets. Who is right?
A, B, Both, Neither
B only
When performing an A/C service on a vehicle, Technician A says the cabin air filter should be inspected. Technician B says all the hoses and fittings should be inspected for signs of leaks. Who is right?
A, B, Both, Neither
Both
The AC condenser is located:
A. behind the radiator
B. in front of the radiator
C. in the passenger compartment
D. all of the above
B. in front of the radiator
While discussing HVAC systems, Technician A states that some cars have only one belt called a serpentine belt that drives the AC compressor. Technician B says some cars have a separate AC belt. Who is right?
A, B, Both, Neither
Both
A customer complains that a high-pitched squeal can be heard at times after the vehicle gets to operating temperatures. Technician A says the refrigerant in the A/C system has leaked out. Technician B says the A/C belt tensioner could be faulty. Who is right?
A, B, Both, Neither
B only
Technician A says if the A/C compressor is running and the air coming from the vents is hot, one may need to check the operation of the blend door. Technician B says one way to check the cabin air filter is by holding it up to a light. Who is correcty?
A, B, Both, Neither
Both
Technician A says that an inoperative PCV valve could cause an engine oil leak. Technician B says that an inoperative PCV valve could cause engine oil to enter the air cleaner. Who is right?
A, B, Both, Neither
Both
When replacing a fuel filter, one should do all except:
A. wear cloth gloves
B. wear safety glasses
C. depressurize the fuel system
D. use a line wrench when applicable
A. wear cloth gloves
While discussing A/C condensers, Technician A says that a restriction may cause engine temperatures to be below normal. Technician B says that a restricted A/C condenser may be cleaned. Who is right?
A, B, Both, Neither
B only
Technician A says that some fuel filters are located on the frame rails of the vehicle. Technician B says that all vehicles have a serviceable fuel filter. Who is right?
A, B, Both, Neither
A only
Which must be done before removing the fuel filter?
A. retrieve and clear the DTCs (diagnostic trouble codes)
B. depressurize the fuel system
C. drain the fuel tank
D. unplug the fuel pump
B. depressurize the fuel system
When performing a throttle body service, Technician A says to clean the throttle body with the engine running. Technician B says it is common practice to use a stiff wire brush to clean the throttle bore. Who is right?
A, B, Both, Neither
Neither
Oil is found in the air cleaner of an automobile engine with a PCV valve. Technician A says a clogged PCV valve may be the cause. Technician B says a PCV valve is part of the emissions system. Who is right?
A, B, Both, Neither
Both
Technician A says that one way to verify proper engine operating temperature is to use an external temperature gauge. Technician B says that one way to verify proper engine operating temperature is to use a scan tool. Who is right?
A, B, Both, Neither
Both
When replacing a fuel filter, what should the first step be?
A. bleed the pressure from the fuel system
B. run the engine for 5 minutes
C. loosen the fuel rail bolts
D. remove the fuel filter
A. bleed the pressure from the fuel system
Two technicians are discussing the positive crankcase ventilation (PCV) system. Technician A says during an inspection one should inspect the hoses for cracks. Technician B says that during an inspection the PCV valve should not rattle. Who is right?
A, B, Both, Neither
A only
Technician A says a thermometer inserted into the coolant reservoir can be used to determine the engine operating temperature. Technician B says a scan tool can be used to read the engine operating temperature. Who is right?
A, B, Both, Neither
B only
Technician A says that some PCV valves are not serviceable. Technician B says to replace the PCV valve every other oil change. Who is right?
A, B, Both, Neither
A only
Technician A says that on some vehicles the fuel filter is not serviceable. Technician B says that when replacing the fuel filter, the system must remain pressurized. Who is right?
A, B, Both, Neither
A only
Technician A says one can check the engine operating temperature by using an infrared thermometer. Technician B says to check engine operating temperature one should use a hydrometer. Who is right?
A, B, Both, Neither
A only
