Week #? - Accessory Boards (aka Small Boards)

Question 1

The specification that indicates how fine a measurement can be made by a DMM is known as what?

Answer 1

Resolution

Question 2

When the resistance and continuity test are made on electronic circuit components, should the circuit being tested be open, closed or energized?

Answer 2

Open

Question 3

True or False: Snapshot test mode can only analyze a historic code.

Answer 3

False

Question 4

What J1587 identifier is equivalent to a J1939 suspect parameter number (SPN)?

Answer 4

PID

Question 5

When a DMM is set to read AC, what term is used to describe the averaging of potential difference to produce a meter reading?

Answer 5

Root mean square (rms)

Question 6

What methods are commonly used to upgrade the software on handheld ESTs?

Answer 6

Upgrade the cartridge PROM chips or cards

Question 7

What is meant by the terms “networking”?

Answer 7

The term NETWORKING is used generally to refer to two or more computer systems that can communicate with each other. On a truck, the data bus or backbone is the networking medium. The Internet is one means that enables PCs to network.

Question 8

True or False: The F-pin on the post-2013 J1939 data connector is smaller than that on a pre-2013 data connector.

Answer 8

True

Question 9

True or False: Most DMMs have an accuracy factor that is within 0.1 percent of the reading.

Answer 9

True

Question 10

What port on an HH-EST data connector is used to connect the printer?

Answer 10

RS-232 port

Question 11

What color is the 2013 J1939 data connector?

Answer 11

Green

Question 12

Which of the following cannot usually be performed by a generic HH-EST?

a. proprietary data programming
b. erase historic fault codes
c. snapshot testing
d. customer data programming

Answer 12

a. proprietary data programming

Question 13

What EST is used to read flash codes?

Answer 13

Dash diagnostic lights

Question 14

How many counts of resolution can be displayed by a 41/2-digit DMM?

Answer 14

19,999

Question 15

What is the correct means of electronically coupling a HH-EST with a truck chassis ECM?

Answer 15

Chassis data connector

Question 16

What is the J1939 equivalent of the J1587 MID?

Answer 16

SA

Question 17

What is the difference between an active code and a historic code?

Answer 17

An ACTIVE code exists at the time of viewing: A HISTORIC code is INACTIVE at the time of viewing and is logged in memory.

Question 18

What is the appropriate EST for performing a resistance test on a potentiometer-type TPS isolated from its circuit?

Answer 18

DMM

Question 19

True or False: J1587 FMIs are identical in number to J1939 FMIs.

Answer 19

False

Question 20

True or False: The post-2013 J1939 data connector is backward compatible with pre-2013 data connectors.

Answer 20

True

Question 21

What is meant by the term GUI? Give some examples.

Answer 21

A GUI is a graphical user interface: its best example is in the pictorial ICONs used in Windows, and Mac software.

Question 22

What component is inserted into terminal sockets to enable testing by DMM probes and minimize physical damage?

Answer 22

Terminal dummies

Question 23

When verifying the signal produced by a potentiometer-type TPS, the DMM test mode selected should be what?

Answer 23

V-AC

Question 24

True or False: A J1939 SA is a module with an address on the data bus.

Answer 24

True

Question 25

How is the output (signal) of a pulse generator rotational speed sensor measured?

Answer 25

V-AC

Question 26

True or False: The accuracy of an analog meter is usually no better than 3 percent.

Answer 26

True

Question 27

True or False: DMM test lead resistance should never exceed 1.0 ohm.

Answer 27

True

Question 28

Of the following PC components, which would usually be described as a peripheral: A CD drive, a modem, a digital camera, or speakers?

Answer 28

A modem

Question 29

When reading the open TPS circuite, which FMI should be displayed?

Answer 29

5

Question 30

What do you call the component that can be safely inserted into electronic circuits so they can be tested without interrupting them?

Answer 30

Breakout box

Question 31

What electrical voltage value does the DMM output when in diode test mode?

Answer 31

0.6V

Question 32

Which of the following procedures cannot be performed using a PC and the OEM software? a. solenoid cycle tests b. permanently erase active fault codes c. erase historic fault codes d. customer data programming

Answer 32

b. permanently erase active fault codes

Question 33

True or False: Using the snapshot test mode when using a handheld reader/programmer to troubleshoot an intermittently occurring fault code will help identify the conditions that produced the code.

Answer 33

True