Deck 34: Ests and Siss

Question 1

What does the acronym EST represent in the truck service industry?

A) electronic service tool
B) electronic sensor test
C) electrical sender terminal
D) electrical speed transducer

Answer 1

electronic service tool

Question 2

What does a displayed active code represent in a truck engine management system?

A) any type of historic code
B) a malfunction at the time of the display
C) engine shutdown is imminent
D) engine is likely to be damaged unless shutdown

Answer 2

a malfunction at the time of the display

Question 3

Which of the following is the usual means used by OEMs to make service literature available to technicians today?

A) online service information systems (SIS)
B) DVD-ROM
C) CD-ROM
D) paper service manuals

Answer 3

online service information systems (SIS)

Question 4

What standard hardware device on a commercial vehicle chassis enables a connection between an EST and most chassis data bus?

A) 7-wire trailer connector
B) J1939 data connector
C) USB port
D) communications adapter (CA)

Question 5

In a typical DMM, where is the black lead inserted when measuring amperage?

A) COM socket
B) A socket
C) mA socket
D) V-ohm socket

Question 6

When accessing a truck chassis data bus, which acronym is used to indicate each vehicle system controller with an address on the data bus?

A) FMI
B) SID
C) PGN
D) SA

Question 7

When using a DMM to test for current, how should the test leads be inserted into the electrical circuit?

A) Series - open circuit
B) Series - closed circuit
C) Parallel - open circuit
D) Parallel - closed circuit

Question 8

When a DMM is used to measure resistance, which of the following should be true?

A) circuit energized, leads in parallel
B) circuit energized, lead in series
C) circuit open, leads in parallel
D) circuit open, red lead in mA socket

Question 9

Which of the following should be used to Tee into an electrical harness without damaging the wiring or interrupting any circuit activity?

A) breakout box
B) test light
C) jumper wire
D) DMM probes

Question 10

Which of the following would indicate an open circuit if displayed on a DMM while checking resistance?

A) 0 Ohms
B) 0 V-DC
C) 0 amps
D) OL

Question 11

When a DMM is switched to diode test mode, how much voltage is driven through the diode being tested?

A) 0 volts
B) 0.20 volts
C) 0.60 volts
D) 1.1 volts

Question 12

When a diode is tested using a DMM set in diode test mode, and the reading indicates continuity in both directions:

A) the diode is shorted
B) the diode is open
C) the diode is functioning properly
D) the diode is fried

Question 13

When testing a potentiometer type throttle position sensor (TPS) with a DMM set to V-DC which of the following should be true?

A) signal voltage should exceed reference voltage
B) signal voltage should increase in steps through the pedal stroke
C) reference voltage should decrease as signal voltage increases
D) signal voltage should smoothly increase through the pedal stroke

Question 14

When checking test lead resistance on a DMM, the reading is a little over 1 ohm. Which of the following is probably true?

A) the test leads are OK
B) the test leads should be replaced
C) the DMM resistance circuit is defective
D) the DMM battery is low

Question 15

Which of the following ESTs do most diesel engine manufacturers recommend to diagnose and reprogram their ECMs?

A) scan tools
B) handheld ESTs
C) Nexiq iQ
D) PCs with Windows-based OEM software

Question 16

Technician A says that experienced technicians should rely on mechanical intuition before resorting to software-driven engine diagnostics. Technician B says that online service information systems can only be accessed after connecting an EST to the chassis data bus. Who is correct?

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

Question 17

Which of the following devices can be used on the PC to connect with a truck data bus?

A) USB port
B) serial port
C) wireless interface
D) all of the above

Question 18

What is the common means used on a communications adapter (CA) to indicate that a successful connection with the chassis data bus has been made?

A) audible beep
B) CA LED illuminates
C) dash LED illuminates
D) data connector LED illuminates

Question 19

What is Caterpillar's service information system (SIS) known as?

A) SIS
B) ISIS
C) EIS
D) QSOL

Question 20

What is Cummins service information system (SIS) known as?

A) SIS
B) NSI
C) EIS
D) QSOL

Question 21

What is Navistar International's current generation of interactive troubleshooting software known as?

A) Electronic Technician (ET)
B) InSite
C) ServiceMaxx (SM)
D) DAVIE

Question 22

What EST do Navistar International recommend you use to interact with their chassis systems?

A) ProLink
B) EZ-Tech
C) MagiKey
D) PocketTec

Question 23

Technician A says that the appropriate source of service literature for Paccar MX engines is DAVIE. Technician B says that Paccar RAPIDO software should be used to troubleshoot Paccar MX engines. Who is correct?

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

Question 24

Which of the following is true regarding any controller with a SA on the data bus?

A) They have processing capability
B) They are networked to the chassis data bus
C) Their numeric codes are common to all OEMs
D) All of the above

Question 25

What numeric code is used to identify the engine controller SA?

A) 68
B) 36
C) 00
D) 28

Question 26

How many digits are used to identify FMIs?

A) one
B) two
C) three
D) seven

Question 27

Technician A says that the monitored fields in HD-OBD relate either directly or indirectly to emissions controls. Technician B says that engine misfire will be a monitored field. Who is correct?

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

Question 28

When making a hard wire connection of an EST to a PC, which of the following is required?

A) parallel bus connector
B) CA and data connector
C) jumper wires
D) breakout T

Question 29

Technician A says that EST snapshot mode can be programmed to launch the instant a code is logged. Technician B says that snapshot profiles may not be taken when a vehicle is mobile on the highway. Who is correct?

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

Question 30

Technician A says that when an EST is loaded with OEM software, any CA claiming to meet the TMC-RP 1210 protocol can be used to connect to the chassis data bus. Technician B says that all CAs designed to interface with J1939 data buses are required meet TMC-RP 1210 standards. Who is correct?

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

Question 31

Technician A says that some earlier generation OEM communications adaptors (CAs) using RP1210 protocols had embedded blocking features so that they could only communicate with one OEM system. Technician B says that any device with a SA on the data bus has some computing capability. Who is correct?

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

Question 32

Technician A says that it is important to memorize the numeric values of all the key engine SIDs in order to effectively troubleshoot modern diesel engines. Technician B says that an advantage of the post-2007 FMIs is that they can identify possible imminent failures. Who is correct?

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

Question 33

Technician A says that RAPIDO software should be used in conjunction with DAVIE. Technician B says that any RP1210 CA can be used to network with any Paccar data bus. Who is correct?

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

Question 34

Which of the following is the data link connector (DLC) used to communicate with post-2014 Volvo and Mack data buses?

A) J1587
B) J1962
C) J1939
D) J1667

Question 35

On a J1962 DLC, which socket is CAN-Hi?

A) 1
B) 6
C) 14
D) 18

Question 36

On a standard J1939 data link connector (DLC), which terminal assignment represents J1939 CAN hi or positive?

A) A
B) C
C) B
D) D

Question 37

On a J1587/1708 data link connector (DLC), which terminal assignment represents J1587 dominant high or positive?

A) A
B) B
C) C
D) D

Question 38

On a J1939 data link connector (DLC), which terminal assignment represents J1587 dominant high or positive?

A) A
B) D
C) E
D) F

Question 39

Technician A says that all engine OEMs supported both J1587 and J1939 chassis data buses up until 2010. Technician B says that post-2010 Cummins and DDC engine electronics no longer support J1587 bus communications. Who is correct?

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

Question 40

What type of connector does a high bus stub require on J1939?

A) 2-pin Weatherpac
B) 3-pin Deutsch
C) 6-pin Weatherpac
D) 9-pin Deutsch

Question 41

What is the numeric SA of the ECM on A J1939 bus?

A) 00
B) 03
C) 128
D) 130

Question 42

A highway truck crane is equipped with two engines, one for propulsion and the other to run the auxiliary equipment. What is the numeric SA of the auxiliary engine controller on the J1939 bus??

A) ?00
B) ?01
C) ?128
D) ?130

Question 43

Technician A says that the FMIs added to qualify DTCs in 2007 were numbered between 15 and 31. Technician B says that the post-2007 FMIs were added to identify imminent failures in components and circuits. Who is correct?

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

Question 44

?Which of the following is true of electronic onboard recorders (EOBRs)?

A) ?They can be accessed for accident analysis.
B) ?They can track HOS.
C) ?They can store data bus info.
D) ?All of the above

Question 45

Technician A says that a green J1939 9-pin DLC is required to access the data bus on MY 2014 and later trucks. Technician B says that a 16-pin J1961 DLC is required to access post-2014 Volvo and Mack Trucks. Who is correct??

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