Accessory Boards (small boards)

Question 1

What EST is used to read flash codes?

Answer 1

dash diagnostic lights

Question 2

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

Answer 2

DMM

Question 3

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

Answer 3

chassis data connector

Question 4

When resistance and continuity tests are made on electronic circuit components, the circuit being tested should be:
a. energized b. open c. closed

Answer 4

open

Question 5

DMM test lead resistance should never exceed:

a. 100 ohms b. 10 ohms per inch c. 1.0 ohm a. 0.2 ohm

Answer 5

1.0 ohm

Question 6

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

Answer 6

V-AC

Question 7

Which of following cannot usually be performed by a generic HH-EST?
a. proprietary data programming b. snapshot testing c. customer data programming d. erase historic fault codes

Answer 7

proprietary data programming

Question 8

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. customer data programming d. erase historic fault codes

Answer 8

permanently erase active fault codes

Question 9

Which of the following methods is commonly used to upgrade the software on handheld ESTs?
a. replace the RAM chip b. reprogram the software cartridge from a mainframe b. upgrade the cartridge PROM chips or cards d. Replace the docking head

Answer 9

upgrade the cartridge PROM chips or cards

Question 10

Which FMI should be displayed when reading an open TPS circuit?

Answer 10

5

Question 11

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

Answer 11

19,999

Question 12

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

Answer 12

resolution

Question 13

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

Answer 13

root mean square (rms)

Question 14

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

Answer 14

RS-232 port

Question 15

What components are inserted into terminal sockets to enable testing by KMM probes and minimize physical damage?

Answer 15

terminal dummies

Question 16

Which electrical voltage value does a DMM output when in diode test mode?

Answer 16

0.6V

Question 17

Technician A states that the accuracy of an analog meter is usually no better than 3 percent. Technician B states that most DMMs have an accuracy factor that is within 0.1 percent of the reading. Who is correct?
a. neither A nor B b. both A and B c. Technician A only Technician B only

Answer 17

Both A and B

Question 18

What is the component called that can be safely inserted into electronic circuits so that they can be tested without interrupting them?

Answer 18

breakout box

Question 19

Technician A states that 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. Technician B states that snapshot test mode can only analyze a historic code. Who is correct?
a. neither A nor B b. Both A and B c. Technician B only d. Technician A only

Answer 19

Technician A only

Question 20

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

Answer 20

V-AC

Question 21

Describe the difference between an active code and a historic code

Answer 21

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 22

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

Answer 22

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

Question 23

What is meant by the term networking?

Answer 23

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 enable PCs to network.

Question 24

Which of the following PC components would be usually described as a peripheral?
a. system housing b. hard disk drive c. CPU d. Printer

Answer 24

Printer

Question 25

In a PC is to be networked to the Internet or an OEM data Hub, which of the following devices is usually required? a. a CD drive b. a digital camera c. speakers d. a modem

Answer 25

a modem

Question 26

Which of the following J1587 identifiers is equivalent to a J1939 suspect parameter number (SPN)? a. SA b. FMI c. PID a MID

Answer 26

PID

Question 27

Technician A says that a J1939 SA is a module with an address on the data bus. Technician B says that J1587 FMIs are identical in number to J1939 FMIs. Who is correct?

Answer 27

Technician A only

Question 28

Which of the following is the J1939 equivalent of the J1587 MID? a. SPN b. SA c. FMI d. PGN

Answer 28

SA

Question 29

What color is the 2013 J1939 data connector?

Answer 29

Green

Question 30

Technician A says that the post-2013 J1939 data connector is backward compatible with pre-2013 data connectors. Technician B says the F-pin on a post-2013 J1939 data connector is smaller than that on a pre-2013 data connector. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. neither A nor B

Answer 30

Both a and B