Question 1

An OBD-I Ford is able to provide engine serial data if there are terminals in which cavities of the DLC?

Accepted Answer

A)  2 and 6 
B)  1 and 2 
C)  2 and 4 
D)  1 and 3 
A)  2 and 6 
B)  1 and 2 
C)  2 and 4 
D)  1 and 3 D

Question 2

A DMM set to read DC volts is connected across terminals 6 and 14 of the DLC. The meter reads zero volts at all times, key on or key off. This indicates ________.

Accepted Answer

A)  a low temperature condition 
B)  a CAN BUS shorted to ground 
C)  bad UART output 
D)  headlights are OFF 
A)  a low temperature condition 
B)  a CAN BUS shorted to ground 
C)  bad UART output 
D)  headlights are OFF B

Question 3

Technician A says that a break-out box (BOB) can be used to access the BUS terminals while using a scan tool to activate the modules. Technician B says that a typical 38-cavity diagnostic connector as found on many BMW and Mercedes vehicles under the hood. Which technician is correct?

Accepted Answer

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

Question 4

Technician A says Chrysler OBD-I (1981-1995) vehicles were equipped with a BUS system called Serial Communications Interface (SCI). Technician B says The Chrysler Programmable Controller Interface (PCI) is a three-wire communication protocol that connects at the OBD-II DLC at terminal 2. Which technician is correct?

Accepted Answer

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

Question 5

Which of these, commonly designated D2B, is an optical BUS system connecting audio, video, computer and telephone components in a single-ring structure with a speed of up to 5,600,000 bps?

Accepted Answer

A)  Flexray BUS 
B)  GMLAN 
C)  CAN Network 
D)  Domestic Digital BUS 
A)  Flexray BUS 
B)  GMLAN 
C)  CAN Network 
D)  Domestic Digital BUS

Question 6

Low-speed networks operate at less than ________ bits per second.

Accepted Answer

A)  2,000 
B)  8,000 
C)  10,000 
D)  5,000 
A)  2,000 
B)  8,000 
C)  10,000 
D)  5,000

Question 7

Which terminal of the OBD-II data link connector is the chassis ground for all vehicles?

Accepted Answer

A)  1 
B)  3 
C)  4 
D)  5 
A)  1 
B)  3 
C)  4 
D)  5

Question 8

The process of sending multiple signals of information at the same time over a signal wire and then separating the signals at the receiving end is which of these?

Accepted Answer

A)  Multiplexing 
B)  Controller Area Network 
C)  Modulating 
D)  Rectifying 
A)  Multiplexing 
B)  Controller Area Network 
C)  Modulating 
D)  Rectifying

Question 9

Technician A says a CANDi module will flash the RED LED rapidly if communication is detected. Technician B says A twisted pair is where two wires are twisted to prevent electromagnetic radiation from affecting the signals passing through the wires. Which technician is correct?

Accepted Answer

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

Question 10

Which of these is a version of Byteflight and is a high-speed serial communication system for in-vehicle networks?

Accepted Answer

A)  Flexray BUS 
B)  Domestic Digital BUS 
C)  CAN Network 
D)  GMLAN 
A)  Flexray BUS 
B)  Domestic Digital BUS 
C)  CAN Network 
D)  GMLAN

Question 11

The MOST BUS is currently used for ________ data communications.

Accepted Answer

A)  engine PCM 
B)  theft deterrent 
C)  entertainment 
D)  engine starting 
A)  engine PCM 
B)  theft deterrent 
C)  entertainment 
D)  engine starting

Question 12

Network diagnosis is being discussed. Technician A says that a test light can be used at the DLC to determine if the CAN bus has activity. Technician B says that a break-out box can be used to determine if there is activity on the CAN bus. Which technician is correct?

Accepted Answer

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

Question 13

The UART data BUS operates at a baud rate of ________ bps.

Accepted Answer

A)  8192 
B)  8211 
C)  8182 
D)  5543 
A)  8192 
B)  8211 
C)  8182 
D)  5543

Question 14

Which of these is a single-wire serial communications protocol, using one master control module and many slave modules?

Accepted Answer

A)  Media Oriented System Transport (MOST) 
B)  Flexray BUS 
C)  GMLAN 
D)  Motorola Interconnect (MI) 
A)  Media Oriented System Transport (MOST) 
B)  Flexray BUS 
C)  GMLAN 
D)  Motorola Interconnect (MI)

Exam 9: Can and Network Communications

An OBD-I Ford is able to provide engine serial data if there are terminals in which cavities of the DLC?

A DMM set to read DC volts is connected across terminals 6 and 14 of the DLC. The meter reads zero volts at all times, key on or key off. This indicates ________.

Technician A says that a break-out box (BOB) can be used to access the BUS terminals while using a scan tool to activate the modules. Technician B says that a typical 38-cavity diagnostic connector as found on many BMW and Mercedes vehicles under the hood. Which technician is correct?

Which of these, commonly designated D2B, is an optical BUS system connecting audio, video, computer and telephone components in a single-ring structure with a speed of up to 5,600,000 bps?

Low-speed networks operate at less than ________ bits per second.

Which terminal of the OBD-II data link connector is the chassis ground for all vehicles?

The process of sending multiple signals of information at the same time over a signal wire and then separating the signals at the receiving end is which of these?

Technician A says a CANDi module will flash the RED LED rapidly if communication is detected. Technician B says A twisted pair is where two wires are twisted to prevent electromagnetic radiation from affecting the signals passing through the wires. Which technician is correct?

Which of these is a version of Byteflight and is a high-speed serial communication system for in-vehicle networks?

The MOST BUS is currently used for ________ data communications.

Network diagnosis is being discussed. Technician A says that a test light can be used at the DLC to determine if the CAN bus has activity. Technician B says that a break-out box can be used to determine if there is activity on the CAN bus. Which technician is correct?

The UART data BUS operates at a baud rate of ________ bps.

Which of these is a single-wire serial communications protocol, using one master control module and many slave modules?

The Diagnostic Process

Gasoline, Alternative Fuels, and Diesel Fuels

Circuit Testers and Digital Meters

Oscilloscopes and Dsos

Engine Systems

In-Vehicle Engine Service

Valve Train and Variable Valve Timing Diagnosis

Engine and Misfire Diagnosis

Onboard Diagnosis

Global Obd Ii and Mode 06

Immobilizer Systems

Starting and Charging System Diagnosis

Ignition System Operation and Diagnosis

Temperature Sensors

Throttle Position Tp Sensors

Map and Maf Sensors

Electronic Throttle Control Systems

Oxygen Sensors

Fuel Trim Diagnosis

Fuel Pumps, Lines, and Filters

Fuel-Injection Components and Operation

Gasoline Direct-Injection Systems

Fuel-Injection System Diagnosis and Service

Electronic Transmission Controls

Vehicle Emissions Standards and Testing

Emission Control Devices Operation and Diagnosis

Module Reprogramming

Symptom-Based Diagnosis

Filters