Deck 23: Electrical Accessories

Question 1

Most horns are controlled by a relay.

Answer 1

True

Question 2

Power window systems use ______.

A)electric motors
B)permanent magnet motors
C)reversible motors
D)All the answers are correct.

Answer 2

D

Question 3

The electric trunk release system uses a ______ to open the trunk lid.

A)solenoid
B)reversible permanent magnet motor
C)both A and B
D)neither A nor B

Answer 3

A

Question 4

The most common rear window defogger system failure is damage to the heating grids on the window.

Question 5

Which device on a cruise control system is used to control the amount of vacuum applied to the servo unit?

A)solenoid coil
B)brake-activated switch
C)transducer
D)None of the answers is correct.

Question 6

A blinking cruise control light indicates that the vehicle is traveling at the maximum speed that the cruise control system allows.

Question 7

A modern electronic cruise control system uses a centrifugal governor to regulate the vacuum to the cruise control servo.

Question 8

Rear defrosters generally have a relay with a timer to allow the defogger to ______.

A)operate for only a specific amount of time
B)function just until the rear window is clear
C)be independent of the ignition switch
D)None of the answers is correct.

Question 9

A horn can be tested by connecting a jumper wire between the battery positive terminal and the horn power terminal.

Question 10

Most wiper motors are the permanent magnet type, which should be handled with care.

Question 11

Most timers for rear window defroster systems operate for twenty minutes.

Question 12

Which device on a vacuum-type cruise control system is used to adjust and control the position of the throttle?

A)servo
B)solenoid
C)brake-activated switch
D)transducer

Question 13

Intermittent wiper delay interval on late models vehicles is controlled by the BCM.

Question 14

Most power seat systems are protected by a circuit breaker.

Question 15

The purpose of a dual horn system is to provide two different horn sounds.

Question 16

The heating grid on a heated seat is typically tested with an ammeter.

Question 17

Permanent magnet motors typically have four brushes.

Question 18

Most intermittent wipers are controlled with a potentiometer.

Question 19

Dirt on the antenna mast can cause poor radio reception.

Question 20

After the wipers are turned off, the ______ switch provides power to the wiper motor until the wipers blades reach the bottom of the windshield.

A)interval
B)rest
C)overrun
D)park

Question 21

Antitheft devices are being discussed. Technician A says the master key can operate the ignition, and unlock all the doors, trunk, and glove box. Technician B says the valet key only works on the doors and the ignition. Who is correct?

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

Question 22

Technician A says the cruise control system disengages if the brake pedal is depressed. Technician B says the cruise control system is disengaged if the clutch pedal is depressed. Who is correct?

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

Question 23

Which of the following is used in an adaptive cruise control system to measure the distance between the vehicle and the vehicle directly ahead of it.

A)radar
B)optical vehicle recognition
C)GPS positioning
D)ultrasonic phase imaging

Question 24

An electrochromic outside mirror ______.

A)displays compass headings in the lower right hand corner
B)automatically dims the headlights when it detects oncoming traffic
C)turns the heater controls to the "Max-defrost" position automatically when it senses the presence of condensation on the interior of the windshield
D)darkens as the intensity (glare)of the outside light increases

Question 25

An open in one of the heated rear window grid elements can be repaired by ______.

A)replacing the window glass
B)pealing the heat grid off the glass with a heat gun and installing a new grid element
C)applying a thin strip of a repair compound to the damaged area
D)bridging the damaged area with rosin core solder

Question 26

A six-way power seat is NOT operating in any switch position. Technician A says to check the circuit breaker. Technician B says there may be excessive resistance in the electrical circuit. Who is correct?

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

Question 27

What do the two-speed permanent magnet type wiper motors generally use to achieve the two speeds?

A)cams
B)reduction gears
C)brushes
D)All the answers are correct.

Question 28

The actuators for power door locks are ______.

A)solenoids
B)reversible DC electric motors
C)thermo-electric expansion capsules
D)All the answers are correct.

Question 29

The reasons for slower than normal wiper operation are being discussed. Technician A says the problem may be in the mechanical linkage. Technician B says there may be excessive resistance in the electrical circuit. Who is correct?

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

Question 30

The master control switch for a power window provides ______.

A)electrical power for the window motor
B)the ground for the window motor
C)Both A and B
D)Neither A nor B

Question 31

Smart keys are being discussed. Technician A says the smart key must be inserted into a slot in the instrument panel before the engine can be started. Technician B says some smart keys can unlock the doors and allow the engine to be started when the smart key is within a few feet of the vehicle. Who is correct ?

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

Question 32

Which of the following is NOT a system used for automotive power seats?

A)a two-way system
B)a four-way system
C)a five-way system
D)a six-way system

Question 33

The speed of a two-speed electromagnetic field type wiper motor is controlled by ______.

A)a stepped resistor between the wiper switch and the motor power terminal
B)additional brushes that increase the strength of the magnetic field in the armature
C)series and shunt field windings that increase the strength of the magnetic field
D)All the answers are correct.

Question 34

Inspection verifies that none of the power windows moves up or down when either the master switch or the door switches are toggled. What could be the problem?

A)blown fuse/defective circuit breaker
B)bad power window system ground
C)defective master switch
D)All the answers are correct.

Question 35

Which of the following types of sensors is NOT used to trigger an alarm system?

A)switch (door, hood, trunk)
B)motion sensor
C)infrared body heat sensor
D)current (electrical)

Question 36

The most common problem with rear window defrosters is ______.

A)burned out relay contacts
B)damage to the grids on the window
C)time delay circuit malfunctions
D)BCM communications failure

Question 37

Technician A says a faulty unlock relay could cause the power door locks to lock but not unlock the doors. Technician B says a faulty actuator could cause this. Who is correct?

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

Question 38

Cruise control systems are being discussed. Technician A says the cruise control system uses a governor valve operated by automatic transmission fluid [ATF] pressure to control the throttle. Technician B says vehicles that use electronic throttle control [throttle by wire] do not require a separate cruise control module, stepper motor, or cable to control engine speed. Who is correct?

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

Question 39

Vacuum-operated cruise control systems are being discussed. Technician A says the brake pedal opens a vacuum valve that bleeds off vacuum to the cruise control servo when the brakes are applied. Technician B says a switch on the brake pedal assembly turns off the electrical power to the transducer when the brakes are applied. Who is correct?

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

Question 40

The right front window does NOT function on a power window vehicle. Technician A states that there may be an open in the window motor circuit. Technician B states that either the master switch or right door switch could be defective. Who is correct?

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

Question 41

Windshield wiper motors are being discussed. Technician A says wiper motors are permanent magnet type motors. Technician B says wiper motors are electromagnet field type motors. Who is correct?

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

Question 42

A(n)____________________ type alarm system must be armed with a key fob transmitter, key, keypad, or toggle switch.

Question 43

The major components in a power mirror system include the fuse/circuit breaker, wiring harness, electrical control switches, and electrical ____________________.

Question 44

The wireless smart key that arms and disarms the antitheft system and allows the vehicle to be started is called a ______.

A)transponder
B)key fob
C)transceiver
D)transducer

Question 45

A power lumbar support uses an electrically inflatable ____________________ to improve the driver's comfort by supporting the lower portion of the spinal column.

Question 46

A blower motor does not work on three of the four speeds but works on high. Technician A says a faulty blower high speed relay is the cause. Technician B says a faulty blower switch may be the cause. Who is correct?

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

Question 47

The ____________________ in a wiper system makes it possible to adjust the wiper interval period.

Question 48

Diagnosis on a late model vehicle with electronic cruise control is done using a(n)____________________

Question 49

Which of the following can be sources of radio interference?

A)Ignition system wiring
B)Electrical power lines
C)Neon signs
D)All of the above

Question 50

Some anti-theft systems use an ignition key that has a ______ embedded in the key.

A)transistor
B)resistor
C)diode
D)capacitor

Question 51

The operation of the rear window defroster can be checked with a __________________.

Question 52

A ____________________ type alarm system automatically arms the alarm system when the ignition key is removed and the doors are locked.

Question 53

The rain sensor in an automatic windshield wiper system is located ______.

A)at the top/center of the windshield
B)in the grill
C)inside the drivers side rear view mirror
D)in the dash pad (above instrument panel)

Question 54

Heated, or self-defrosting, front windshield systems rely on an electrical current being sent through a microthin ____________________ coating on the inside of a windshield.

Question 55

The windshield washer pump is normally located in the ____________________.

Question 56

The park switch for a windshield wiper system is located ______.

A)on the drivers side wiper arm
B)inside the wiper motor
C)inside the BCM
D)inside the wiper control relay

Question 57

The direction that the power window motor moves the glass is determined by the ____________________ of the supply voltage.

Question 58

The major components of a power seat system include the fuse/circuit breaker, wiring harness, electrical control switches, and ____________________.

Question 59

A technician is testing a power seat that operates slower than normal. The dome light noticeably dims while operating the power seat motors. The problem is likely ______.

A)binding in the seat mechanism
B)high resistance in the seat switch
C)a poor seat motor ground
D)a defective circuit breaker

Question 60

A technician is diagnosing a vehicle for slow wiper operation. When the linkage from the motor is disconnected and the wiper motor is turned on, the motor runs normally. Technician A says the motor has a poor ground connection. Technician B says the linkage is binding. Who is correct?

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

Question 61

What is the difference between a passive and an active alarm system?

Question 62

What are the five principal components of a power sun roof system?

Question 63

Identify the various components of typical audio and video systems.

Question 64

How would you test a horn relay?

Question 65

What is the first step in diagnosing a power window system?

Question 66

When an entire power window system is not functioning, what items should be checked?

Question 67

What precautions would you take before disconnecting an antitheft radio?

Question 68

Describe the purpose of electrochromatic  mirrors.

Question 69

What safety precautions should be observed when diagnosing a horn circuit problem?

Question 70

What is a power lumbar support system?

Question 71

How does blind spot detection work?

Question 72

What is the difference between a smart key and a smarter key.