Deck 20: Lighting Systems

Question 1

Flash-to-pass systems blink the high beams on and off when the turn signal lever is moved to change lanes to pass another vehicle.

Answer 1

False

Question 2

A lamp generates light as current flows through the filament.

Answer 2

True

Question 3

When replacing a composite lamp, do not handle the bulb by its base.

Answer 3

False

Question 4

Circuits that can operate the high beams even if the headlight switch is off are called ____ circuits.

A)flash-to-pass
B)mercury
C)dimmer
D)retractable

Question 5

The photocell sensor/amplifier for an automatic light system is usually mounted under a group of perforated holes in the upper instrument panel pad.

Question 6

The reflector (aluminum-coated mirror)in a light fixture. can be cleaned with a lint-free cloth.

Question 7

Halogen bulbs are only used in composite headlights.

Question 8

The lower filament of a dual filament headlamp is for the high beam.

Question 9

Vehicle lighting systems are regulated by federal laws.

Question 10

A halogen bulb, located within a composite headlamp assembly, will burn out soon after if the assembly is cracked.

Question 11

In a damaged headlight, as long as the filament envelope has not been broken, the filament will continue to operate.

Question 12

An underhood lamp is typically controlled by a _____ switch.

A)headlight
B)momentary contact
C)courtesy light
D)mercury

Question 13

On older vehicles, concealed (pop-up)headlights were often operated by vacuum.

Question 14

The dimmer switch allows the driver to change the intensity of the instrument panel lamps.

Question 15

Double filament bulbs can be used as the lone bulb in the stoplight circuit, taillight circuit, and the turn signal circuit.

Question 16

Most modern vehicles have a warning system if the driver's door is opened when the headlights or parking lights are on.

Question 17

The rear light assembly typically includes the ______.

A)rear turn signals
B)taillights
C)brake lamps
D)All the answers are correct.

Question 18

Some light circuits are ground controlled, where the lightbulb has power all the time and the light switch completes the circuit to ground.

Question 19

Which of the following are NOT usually controlled by the main light switch assembly?

A)headlights
B)parking lights
C)taillights
D)backup lights

Question 20

Most composite headlights are vented to release the pressure of heated air.

Question 21

Composite headlights are being discussed. Technician A says they have replaceable bulbs. Technician B says a cracked or broken lens will prevent the operation of a composite headlamp. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 22

Which of the following statements regarding high-intensity discharge headlamps is false?

A)More than 15,000 volts are needed to jump the gap between the electrodes
B)They come on instantly
C)Once lit, 80 volts are required to keep current flowing
D)They produce about twice as much light as halogen bulbs

Question 23

Technician A says on all vehicles, the fuse that protects the backup light system is the same fuse that protects the turn signal system. Technician B says vehicles equipped with automatic transmissions use a combination backup/neutral start switch. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 24

Technician A says HID (xenon)headlights on vehicles sold in Europe must be self-leveling and equipped with washers. Technician B says HID headlights produce more heat and use more electricity than halogen headlights. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 25

Technician A says blinking headlights can be caused by the self-resetting circuit breaker installed between battery and the headlight switch, that is kicking out due to a short. Technician B says flickering vehicle lights can be caused by a loose electrical connection. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 26

Standard sealed beams are typically filled with ______.

A)oxygen
B)argon
C)helium
D)nitrogen

Question 27

The light-sensitive photocell sensor/amplifier of an automatic light system is located ______.

A)in the center of the grill
B)within the upper instrument panel pad
C)near the base of a wiper arm
D)within a composite headlamp assembly

Question 28

Which of the following is NOT a basic type of headlight used in today's vehicles?

A)sealed beam
B)acetylene
C)composite
D)high-intensity discharge

Question 29

The stoplight switch is normally mounted on the ______.

A)instrument panel
B)transmission
C)brake pedal arm
D)None of the answers is correct.

Question 30

Technician A says the condition of the vehicle's springs and shocks should be checked before aligning the headlamps. Technician B says the vehicle should have a full tank of fuel when its headlamps are being adjusted. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 31

Technician A says a lamp may contain only one filament. Technician B says some lamps contain two filaments. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 32

Technician A says some condensation on the inside of a sealed beam headlamp is normal. Technician B says the buildup of black spots on the lens of a sealed beam headlamp decreases the brightness of the headlamp. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 33

Technician A says on some vehicles, if the turn signals blink faster than normal, the problem may be a burned out bulb. Technician B says on some vehicles, if the turn signals don't blink at all, the problem may be a burned out bulb. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 34

Technician A says non-composite halogen light systems do not have removable bulbs. Technician B says some composite headlamp housings are vented. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 35

Which tool is used to diagnose automatic leveling headlight problems?

A)DMM
B)electronic headlight aimer
C)aiming screen and spirit level
D)scan tool

Question 36

Technician A says the brake light switch receives voltage from the ignition switch. Technician B says when there is light pressure on the brake pedal, the brake lights will be dim. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 37

Technician A says vanity lights are on whenever the headlamps are on. Technician B says most trunk lights are on whenever the headlamps are on. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 38

A technician is diagnosing an HID headlight that intermittently turns on and off. Technician A says the problem is a worn out HID arc tube{bulb]. Technician B says the problem is a blown headlight fuse. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 39

Which of the following statements concerning LED headlights is NOT true?

A)LED headlights use 40 percent less power than xenon-type headlights
B)LEDs produce whiter light than xenon
C)LEDs contain mercury, which is toxic and environmentally unfriendly
D)LEDs do not require a vacuum bulb or high voltage to work

Question 40

Technician A uses a powered test light to check a lightbulb. Technician B uses an ohmmeter. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 41

________ ________  is the manufacturer that has introduced a laser headlight system.

Question 42

The multifunction switch is normally mounted on the ______.

A)instrument panel
B)brake pedal arm
C)steering column
D)shift lever assembly

Question 43

Once high voltage bridges the gap in the HID xenon arc tube, only about _____ volts are needed to keep current flowing across the gap.

A)14
B)80
C)200
D)800

Question 44

Headlamps either have a replaceable lightbulb or they are ____________________ beams, which must be replaced as a unit.

Question 45

Some manufacturers recommend coating the prongs and base of the headlights with ____________________ grease to prevent corrosion.

Question 46

Technician A uses the vehicle's built-in bubble level to adjust headlight vertical aim. Technician B uses a screen at ten feet from the vehicle to aim headlights. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 47

Sealed beam headlights are being discussed. Technician A say the lens of a sealed beam headlight has convex prisms molded into its inner surface to concentrate the light into a narrow beam. Technician B says a sealed beam is an airtight assembly containing a filament, reflector, and lens. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 48

A(n)______-type headlight system features a mechanical shield plate or shutter that is moved up and down as the headlights are switched between low and high beams.

A)xenon
B)bi-xenon
C)halogen composite
D)adaptive

Question 49

The element vapor used in most halogen lightbulbs is ______.

A)chlorine
B)fluorine
C)iodine
D)bromine

Question 50

A customer complains that the turn signal indicator flashes unusually fast when the turn signal switch is in a left turn position. Technician A says the left side turn signal flasher is defective. Technician B says one of the left turn signal bulbs is the wrong wattage. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 51

Flash-to-pass systems are being discussed. Technician A says the high beam filament is turned on when the flash-to-pass switch is closed. Technician B say the flash-to-pass system only works when the headlights or parking lights are turned on. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 52

The owner of a vehicle with automatic headlights complains that the headlights are always on whenever the vehicle is driven; even in broad daylight. What is the first thing you should check?

A)headlight fuse
B)headlight switch connections
C)check for DTCs with scan tool
D)articles placed on top of the dash

Question 53

Headlight circuit protection devices are being discussed. Technician A says the headlight circuit is protected by a self-resetting circuit breaker. Technician B says the headlight circuit is protected by a single maxi fuse. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 54

What is the life expectancy of an LED headlight?

A)2 years/30,000 miles
B)5 years/60,000 mils
C)10 years/150,000 miles
D)the life of the vehicle

Question 55

The ____________________ switch provides a means for the driver to select between high or low beam headlamp operation.

Question 56

How long does it take an HID-type headlight to reach maximum intensity?

A)15 milliseconds
B)150 milliseconds
C)1.5 seconds
D)15 seconds

Question 57

Daytime running lights are being discussed. Technician A says DRLs turn on when the parking brake is applied. Technician B says the DRL module applies 6 volts to the high beam filaments when the ignition is on and the headlights are turned off. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 58

Fog lamps are usually tinted ____________________.

Question 59

The best place on a vehicle to mount fog lights is ______.

A)below the front bumper
B)on the roof
C)on the hood
D)on a light bar twelve inches above the roof

Question 60

Which statement concerning HID headlights is NOT true?

A)The light beam made by HID headlights is brighter and more consistent than halogen-type headlights
B)HID headlights are smaller and lighter than halogen headlights
C)HID headlights run hotter than halogen headlights
D)HID headlights use less electrical power than halogen headlights

Question 61

Identify the four basic types of headlights.

Question 62

Where is the sensor located on automatic headlight systems that have automatic high beam detection?

Question 63

While the car's headlights are adequate in normal driving circumstances, some customers desire ____________________ lights for special conditions such as fog or extended night driving.

Question 64

List the four main components of an illuminated entry system.

Question 65

Most headlight assemblies are provided with ____________________ adjusting screws.

Question 66

Some headlight assemblies are equipped with a ____________________ level to aid vertical headlamp alignment.

Question 67

List three common locations of courtesy lights.

Question 68

More than ____________________ volts are used to jump the gap between the electrodes of an HID headlamp.

Question 69

Describe adaptive headlights.

Question 70

Automatic leveling HID headlights are controlled by the ____________________.

Question 71

Describe an automatic light system.

Question 72

Why do some manufacturers protect the headlamp circuit with a circuit breaker instead of a fuse?

Question 73

What are adaptive brake lights?

Question 74

The turn signal and hazard flashers are located in the ____________________.

Question 75

When installing fog lights or driving lights, a ____________________ should be used to prevent overloading the vehicle's lighting circuit and circuit protection devices.

Question 76

A standard sealed beam headlight is commonly filled with ____________________ gas.

Question 77

When should a vehicle be equipped with a heavy-duty turn signal flasher?

Question 78

The country that requires that all new vehicles be equipped with daytime running lights for added safety is ____________________.

Question 79

Describe how daytime running lights function.

Question 80

Name the two headlight design that do NOT have a filament.