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Chapter 11
End of Chapter Review Questions Answer Key
1. What EST is used to read flash codes?
2. The appropriate EST for performing a resistance test on a potentiometer-type TPS
isolated from its circuit is a:
3. Which of the following is the correct means of electronically coupling a HH-EST
with a truck chassis ECM?
4. When resistance and continuity tests are made on electronic circuit components, the
circuit being tested should be:
5. DMM test lead resistance should never exceed:
6. The output (signal) of a pulse generator rotational speed sensor is measured in:
7. Which of the following cannot usually be performed by a generic HH-EST?
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8. Which of the following procedures cannot be performed using a PC and the OEM
software?
9. Which of the following methods is commonly used to upgrade the software on
handheld ESTs?
10. When reading an open TPS circuit, which FMI should be displayed?
11. How many counts of resolution can be displayed by a 41/2-digit DMM?
12. The specification that indicates how fine a measurement can be made by a DMM is
known as:
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?
14. Which port on an HH-EST data connector is used to connect the printer?
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15. Which of the following components are inserted into terminal sockets to enable
testing by DMM probes and minimize physical damage?
16. Which electrical voltage value does a DMM output when in diode test mode?
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?
18. The component that can be safely inserted into electronic circuits so they can be tested
without interrupting them is called a:
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?
20. When verifying the signal produced by a potentiometer-type TPS, the DMM test
mode selected should be:
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24. Which of the following PC components would be usually described as a peripheral?
25. If a PC is to be networked to the Internet or an OEM data hub, which of the following
hardware devices is usually required?
26. Which of the following J1587 identifiers is equivalent to a J1939 suspect parameter
number (SPN)?
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?
28. Which of the following is the J1939 equivalent of the J1587 MID?
29. What color is the 2013 J1939 data connector?
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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?