Deck 8: Introduction to the Body Computerbody Computer System Diagnosis

Question 1

Technician A says the computer will make control commands to various output devices during the output function. Technician B says the computer uses the input information and compares it to programmed instructions during the processing function.

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

Answer 1

C

Question 2

Which of the following is an actuator?

A) A motor
B) A relay
C) A solenoid
D) All of the above

Answer 2

D

Question 3

Wear a(n) ____ to ground your body to prevent static discharges that may damage electronic components.

A) insulated glove
B) electrostatic discharge (ESD) strap
C) approved set of work shoes
D) ground wire

Answer 3

B

Question 4

The storage function of the computer converts analog to digital signals.

Question 5

A stepper motor contains a permanent magnet armature.

Question 6

Technician A says the output of one computer can also be used as an input to another computer. Technician B says a sensor is an output device. Who is correct?

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

Question 7

Actuators are devices that perform work commanded by a computer.

Question 8

Technician A says a NOT gate simply reverses binary ones to zeros and vice versa. Technician B says AND gate operation is similar to two switches in series to a load. Who is correct?

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

Question 9

High-side drivers complete the actuator control circuit to ground.

Question 10

Technician A says RAM will store temporary information that can be read from or written to by the MP . Technician B says ROM can be written to and changed by the computer. Who is correct?

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

Question 11

Technician A says to test sensor signals, a breakout box can be used. Technician B says sensors can only be tested with a scan tool. Who is correct?

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

Question 12

____ are the output of the self-diagnostics program in the form of alpha/numeric codes that indicate faulty circuits or components.

A) Shared circuits
B) Trouble codes
C) Components and harnesses
D) Computer malfunctions

Question 13

A stepper motor may have two or four field coils.

Question 14

An interface protects the computer from excessive voltage.

Question 15

Hard code failures are those that were detected the last time the BCM tested the circuit.

Question 16

Technician A says when servicing the BCM, a test light should be used to check for voltage. Technician B says before making or breaking electrical connections to the BCM, make sure the ignition switch is off. Who is correct?

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

Question 17

If a malfunction results in improper system operation, the computer may minimize the effects by using ____ action.

A) by-pass
B) breaking
C) shut down
D) fail-safe

Question 18

The NOT gate reverses binary code.

Question 19

The brain of the computer is the central processing unit.

Question 20

High resistance in the sensor return circuit can cause a faulty input from all sensors that use a shared circuit.

Question 21

To ____ a computer means to remove the existing programming and overwrite it with new software.

A) reset
B) feed
C) override
D) flash

Question 22

The _______________ is a crystal that electrically vibrates when subjected to current at certain voltage levels.

A) microprocessor
B) A/D converter
C) clock
D) accumulator

Question 23

Technician A says high-side drivers control the ground side of the circuit. Technician B says high-side drivers may be capable of determining circuit faults. Who is correct?

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

Question 24

The ____ is the brain of the computer.

A) microprocessor
B) A/D converter
C) program
D) interface circuit

Question 25

A ____ is a special tool that connects to the computer connectors to allow the technician to test circuits, sensors, and actuators by providing test points.

A) body computer
B) breakout box
C) circuit breaker
D) backprobe

Question 26

A transistor that operates as a relay is the basis of the ____ computer.

A) analog
B) binary
C) interface
D) digital

Question 27

Technician A says open circuit testing of the BCM power supply will indicate if there is high resistance in the circuit. Technician B says that open circuit testing has the potential to mislead to improper diagnostics. Who is correct?

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

Question 28

____ memory is the ability of the computer system to store changing values in order to correct operating characteristics.

A) Random access
B) Keep alive
C) Volatile
D) Adaptive

Question 29

All of the following are precautions to prevent static electricity damage when replacing a control module EXCEPT:

A) Ground the package to a known good ground before opening.
B) Open the package only when ready to install the component.
C) Wipe the terminals clean before installing the component.
D) Touch a known good ground before opening the package.

Question 30

The operation of a computer is divided into four basic functions: ____.

A) Addition, Subtraction, Multiplication, Division
B) Sequence, Selection, Repetition, Output
C) Input, Processing, Storage, Output
D) Audio, Video, Calculate, Store

Question 31

A(n) ____ is a transistor device that controls the current in the output circuit.

A) Register
B) Accumulator
C) Driver
D) Gate

Question 32

Using the bidirectional control function of the scan tool fails to make an actuator operate; which of the following could be the cause:

A) Faulty scan tool.
B) Open actuator ground circuit.
C) Open power circuit to the actuator.
D) All of the above.

Question 33

Technician A says the microprocessor commands actuators by output drivers. Technician B says that outputs are never controlled by supplying voltage to the actuator. 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

____ diagnostic capabilities may include the ability to determine a short circuit or open circuit condition.

A) High-side driver
B) Low-side driver
C) Bipolar transistor
D) Multiplexer

Question 35

Logic gates are the thousands of field effect transistors (FETs) incorporated into the computer ____.

A) memory
B) circuitry
C) binary code
D) programming

Question 36

Most computer-controlled actuators are ____ that convert the output commands from the computer into mechanical action.

A) electromechanical devices
B) switches
C) sensors
D) valves

Question 37

Technician A says that a PWM actuator cannot be tested with a DMM. Technician B says the PWM actuator may be tested with a lab scope. Who is correct?

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

Question 38

Technician A says nonvolatile RAM will lose its memory if removed from its power source. Technician B says volatile RAM is not erased when it is disconnected from its power source. 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

A(n) ____ is a microprocessor designed to communicate with the BCM.

A) actuator
B) scan tool
C) sensor
D) reader

Question 40

A(n) ____ is a set of instructions the computer must follow to achieve desired results.

A) analog signal
B) digital signal
C) circuit diagram
D) program

Question 41

Explain why it is important to test the sensor return circuit.

Question 42

Define a ROM memory chip.

Question 43

_______________ are registers designed to store the results of logic operations.

A) Microprocessors
B) A/D converters
C) Drivers
D) Accumulators

Question 44

List three types of computer memory.

Question 45

Describe the operation of logic gates.

Question 46

Technician A says it is a good practice to flash all controllers to the latest version. Technician B says the J2534-1 pass-thru device is a gateway between the vehicle's on-board computers and the shop's PC or laptop. Who is correct?

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

Question 47

What component contains specific data that pertains to the exact vehicle in which the computer is installed?

Question 48

List the precautions necessary to prevent static electricity damage when replacing a control module.

Question 49

What is the purpose of the interface.

Question 50

Name four forms of actuators.

Question 51

What is the function of the clock circuit?

Question 52

Flashing a BCM is being discussed. Technician A says a battery charger must be connected to maintain 12 volts during the entire flash procedure. Technician B says that most reprogramming procedures can be reverted to the original programming. Who is correct?

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

Question 53

The AND gate has how many inputs and outputs?

Question 54

Technician A says if the scan tool indicates that an actuator is being turned on and off, the actuator is working. Technician B says that DTCs can only be retrieved by a scan tool. Who is correct?

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

Question 55

List the four basic operational functions of the computer.

Question 56

What is the brain of the computer?

Question 57

Describe the steps that should be performed prior to flashing the BCM.

Question 58

Explain the function of a multiplexor.

Question 59

Name the components that should be visually inspected before attempting to test the BCM-controlled system.

Question 60

What function of the scan tool allows for testing the actuators?

A) Activation test (bidirectional controls)
B) Mode 6
C) Freeze frame
D) All of the above