Deck 57: Driver Information and Navigation Systems

Question 1

Two technicians are discussing a fuel gauge on a General motors vehicle. Technician A says that if the ground wire connection to fuel tank sending unit becomes rusty or corroded, the fuel gauge will read higher than normal. Technician B says that when the power lead to the fuel tank sending unit is disconnected from the tank unit and grounded (ignition on), the fuel gauge should go to empty. Who is right?

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

Answer 1

Technician B only

Question 2

What is the meaning of this symbol?

A)ABS system fault
B)Brakes noisy
C)Radio too loud
D)Braking system fault

Answer 2

Braking system fault

Question 3

When the oil pressure drops to between 3 and 7 psi, the oil pressure lamp lights by ________.

A)Grounding the circuit
B)Shorting the circuit
C)Opening the circuit
D)Conducting current to dash lamp by oil

Answer 3

Grounding the circuit

Question 4

A brake warning lamp on the dash remains on whenever the ignition is on. If the wire to the pressure differential switch (usually a part of the combination valve or built into the master cylinder) is unplugged, the dash lamp goes out. Technician A says that this is an indication of a fault in the brake hydraulic system. Technician B says the problem is probably due to a stuck parking brake cable switch. Who is right?

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

Question 5

A customer complains that every time the lights are turned on in the vehicle, the dash display dims. Which of these is the MOST likely cause which of these conditions?

A)Normal behavior for LED (Light Emitting Diode) dash displays
B)Normal behavior for VTF (Vacuum Tube Fluorescent) dash display
C)Feedback problem from a short-to-voltage between headlights and dash display
D)Poor ground in lighting circuit causing a voltage drop to dash lamps

Question 6

What is the meaning of this symbol?

A)Low oil pressure
B)Loose oil filler cap
C)Doors need lubrication
D)Low oil temperature

Question 7

What is the meaning of this symbol?

A)Coolant freeze protection too low
B)Loose radiator cap
C)High water ahead
D)Coolant temperature too high

Question 8

A vehicle with a lane departure warning system uses sensors or cameras to monitor ________.

A)Roadside tree density
B)Road surface roughness
C)Road line markings
D)Vehicles behind and in front

Question 9

The OnStar system operates by using GPS data and ________.

A)Cellular telephone service
B)Satellite telephone data
C)Both A and B
D)Neither A nor B

Question 10

How does changing tire diameter affect the speedometer reading?

A)A smaller diameter tire causes the speedometer to read slower than the actual speed and less than the actual mileage on the odometer
B)A larger diameter tire causes the speedometer to read slower than the actual speed and more than the actual mileage on the odometer
C)A smaller diameter tire causes the speedometer to read faster than actual speed and more than actual mileage on the odometer
D)A larger diameter tire causes the speedometer to read faster than the actual speed and more than the actual mileage on the odometer

Question 11

Technician A says that most digital and analog (needle-type) dash gauges use variable resistance sensors. Technician B says that permanent-magnet (PM) generators produce an AC signal and are used for vehicle speed and wheel speed sensors. Who is right?

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

Question 12

The sending unit in a typical fuel gauge includes a ________.

A)Diaphragm
B)Float
C)Zener diode
D)Fixed resistor

Question 13

Which of these is a type of electric motor designed to rotate in small increments based on the signal from a vehicle computer?

A)Compound motor
B)Stopper motor
C)Shunt control motor
D)Stepper motor

Question 14

Which of these is a supplemental display that projects the vehicle speed and sometimes other data, such as turn signal information, onto the windshield?

A)Driver Information Center (DIC)
B)Instrument Panel Display (IPD)
C)Road Monitor
D)Head-up display (HUD)

Question 15

Most vehicles today use a ________ for an input to the engine temperature display.

A)Coolant range sensor
B)Coolant temperature sending unit
C)ECT sensor
D)None of these

Question 16

Which of these electronic display devices uses a fluid and polarized glass to create numbers and characters?

A)CRT
B)VFD
C)LCD
D)LED

Question 17

The parking brake switch is in a circuit that illuminates a ________ color light in the instrument cluster.

A)Green
B)Red
C)Amber
D)None of these

Question 18

The light indicating a problem with the ABS system is colored ________.

A)Green
B)Red
C)Amber
D)None of these

Question 19

Electronic indicators alert the driver when ________.

A)Traction control is turned off
B)A fault is detected in the airbag (SRS) system
C)Both A and B
D)Neither A nor B

Question 20

An oil pressure warning lamp is usually controlled by which of these devices?

A)Ground sensor
B)Sensor unit
C)Voltage drop
D)Manual switch