Deck 14: Radio Frequency and Infotainment Systemsservicing Radio Frequency and Infotainment Systems

Question 1

Most immobilizer system transponders do not use ____.

A) batteries
B) warning messages
C) a unique PIN code
D) radio frequency

Answer 1

A

Question 2

The MEMS gyro sensor informs the navigation system of the speed and direction of the vehicle.

Answer 2

True

Question 3

The PIN code requires a different signal every transmission to improve security.

Answer 3

False

Question 4

Pressing a button on the FOB will allow operation of the remote keyless entry (RKE) system, which is typically a function of the ____.

A) light-emitting diodes (LEDs)
B) local interconnect network (LIN)
C) body control module (BCM)
D) powertrain control module (PCM)

Question 5

In the event that GPS satellite signals are lost, the navigation system will invert to dead reckoning.

Question 6

The radio choke is installed in the antenna output circuit to prevent unwanted and random signals from reaching the radio.

Question 7

All tire monitoring systems require the pressure sensor transmitter locations be relearned when a tire rotation is performed.

Question 8

In the immobilizer system, the special keys have a(n) ____ under the covering.

A) LED
B) scan tool
C) antenna
D) transponder chip

Question 9

A remote keyless entry system is inoperative. Which of the following is the most common cause of the problem?

A) A defective lock solenoid.
B) A weak transmitter battery.
C) A blown transmitter fuse.
D) A burned out receiver module.

Question 10

Connectivity issues with the telematics system can be caused by incompatibility of devices.

Question 11

In the remote keyless entry (RKE) system, the transponder and receiver system operate ____.

A) only at a very close range
B) at a fixed radio frequency
C) in series
D) without bus communication messages

Question 12

On a vehicle equipped with an immobilizer system, the engine starts for a few seconds and then dies. What is the LEAST likely cause of this?

A) An invalid key was used.
B) A misadjusted doorjamb switch.
C) The immobilizer module has a poor ground.
D) Lost communication between immobilizer module and PCM.

Question 13

What component of a radio performs the function of the tuner?

A) Capacitor/inductor oscillator.
B) Decoder.
C) Antenna.
D) None of these choices.

Question 14

The keyless engine starting function can be performed only if the antenna determines that
the transmitter is within the vehicle.

Question 15

When adding new keys to the immobilizer system it is important to have all of the keys available.

Question 16

The tire pressure monitoring (TPM) system is a(n) ____ that notifies the driver if a tire is underinflated or overinflated.

A) obsolete feature
B) expensive option
C) dedicated system
D) safety system

Question 17

A weak and fading AM signal could be caused by a bad or ungrounded antenna.

Question 18

The keyless start is an enhancement to the infotainment system.

Question 19

The TPS internal transmitter broadcasts tire pressure and ____ information to a dedicated electronic control unit (ECU).

A) road condition
B) tire wear
C) temperature
D) weather

Question 20

Tire pressure sensors are attached to the rim by a sleeve nut on the ____.

A) axle
B) side of the tire
C) valve stems
D) lug nuts

Question 21

The immobilizer ____ is either mounted to the steering column or in the instrument panel.

A) alarm
B) detector
C) module
D) transponder

Question 22

A customer is concerned that the navigation system does not seem to indicate the location of the vehicle properly. This is an intermittent condition. Technician A says the system may be using dead reckoning. Technician B says the system may have lost its have lost the satellite signal. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 23

Radio wave transmission is based on the principle of ____.

A) reproduction
B) conductance
C) deduction
D) induction

Question 24

Most of today's audio/video systems can be diagnosed with a(n) ____ since the system will set fault codes when a failure is determined.

A) DMM
B) scan tool
C) shop policies
D) test antenna

Question 25

A speaker is being tested. Technician A says if an AA battery is connected across the speaker terminals and the connection is made and broken quickly, the speaker should not make any noise. Technician B says when measuring the resistance of the electromagnetic voice coil the ohmmeter should have an infinite reading. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 26

The ____ acts as an electronic switch to change between the different audio sources.

A) multiplexer
B) hands-free module
C) radio choke
D) satellite receiver

Question 27

Large speakers, called ____, produce the low frequencies of midrange and bass better than small speakers.

A) megaphones
B) tweeters
C) woofers
D) speaker cones

Question 28

All of the following can cause poor radio reception, EXCEPT :

A) loose or corroded battery cable terminals.
B) high-resistance body and engine grounds.
C) an open between the antenna mast and chassis ground.
D) loss of antenna and audio system grounds.

Question 29

Most tire pressure monitoring systems use a(n) ____ sensor transmitter in each wheel.

A) air valve
B) pressure
C) temperature
D) location

Question 30

The satellite radio screen is constantly displaying "Updating Channels." All of the following can cause this EXCEPT :

A) a hardware communication failure.
B) faulty multiplex switch.
C) faulty antenna.
D) faulty telematics module.

Question 31

Infotainment refers to a type of ____ system that provides a combination of information and entertainment.

A) radio
B) GPS
C) TV
D) media

Question 32

A radio equipped with an internal hard drive is being replaced. Technician A says the hard drive needs to be backed up and the data restored to the new radio. Technician B says the hard drive should be removed from the old radio and installed into the new radio. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 33

Technician A says the multiplexer is used to a switch to allow the antenna and the rear heater grid to use the same circuits. Technician B says Wi-Fi wireless internet connection can be used to create a Hotspot in the vehicle. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 34

____ is audible at very low volume levels and results from problems with the power circuit.

A) Radio interference
B) Inductive interference
C) Magnetic interference
D) Conductive interference

Question 35

The most common sound system configuration is the all-in-one unit called a(n) ____.

A) amplifier
B) receiver
C) tuner
D) equalizer

Question 36

A radio transmitter generates radio frequency by taking the data and encoding it onto a(n) ____.

A) antenna
B) receiver
C) sine wave
D) broadcast

Question 37

In a simple crystal radio, a capacitor/inductor oscillator performs as the ____ for the radio.

A) receiver
B) tuner
C) transmitter
D) antenna

Question 38

Technician A says tire pressure monitoring can be done using wheel mounted pressure sensor transmitters. Technician B says tire pressure monitoring can be done using the ABS wheel speed sensors. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 39

Like a home Wi-Fi system, the telematics Wi-Fi uses a wireless ___________ to connect to an internet service.

A) antenna
B) router
C) tuner
D) MUX module

Question 40

Radiated noise results from an accessory that produces a signal that is detected by ____.

A) the antenna
B) electromagnetic interference
C) ignition components
D) a radio choke

Question 41

Technician A says the batteries used in the immobilizer key typically last 10 years. Technician B says the immobilizer module antenna is internal to the radio antenna. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 42

How can the ABS system wheel speed sensors be used to monitor tire inflation?

Question 43

What technology is used to provide hands-free cellphone service?

Question 44

What is the most common cause for telematics connectivity issues?

Question 45

Technician A says that most immobilizer systems have a method for the customer to add vehicles keys. Technician B says if only one key is available, it can be used twice in order to enter the programming mode. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 46

The tire pressure system transponder data is being displayed on the scan tool. The scan tool is reporting communication with only three transponders. What is the most likely cause?

A) Damaged data line.
B) This is normal.
C) Faulty transponder.
D) Faulty scan tool.

Question 47

What is the purpose of the special multimedia test kit?

Question 48

Describe the methods used by p remium tire pressure monitoring systems to determine tire location.

Question 49

What system is designed to provide protection against unauthorized vehicle use by disabling the engine if an invalid key is used to start the vehicle or an attempt to hot-wire the ignition system was made?

Question 50

Describe the use of the tire pressure system analyzer.

Question 51

How can a AA battery be used to test a speaker?

Question 52

List perceived problems with the remote start feature that are actually normal operation.

Question 53

What is radiated noise?

Question 54

How is vehicle direction and speed determined?

Question 55

What is the function of the telematics system?

Question 56

Describe the operation of the immobilizer system.

Question 57

What is a radio chock?

Question 58

Dead reckoning:

A) is used in the event the navigation system loses its input from the gyro sensor.
B) is used to confirm satellite positioning.
C) is used to display the GPS map.
D) uses the last known position and direction of travel along with vehicle speed and gyro sensor inputs to calculate the approximate position of the vehicle.

Question 59

Technician A says a rear window defogger/antenna module separates the RF signal used by the radio from the electrical current used by the grid. Technician B says usually the top grid lines of the heater grid are unheated and used to receive the AM signals. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 60

What is the purpose if the immobilizer system secret key code?