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OTC - Diesel Electrical DET-106 > Week #6 - Computer Control Operation & Service > Flashcards

Week #6 - Computer Control Operation & Service Flashcards

1
Q

What colors would be associated with a J1939 twisted-wire pair?

A

Green and Yellow

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2
Q

True or False: A green 9-pin J1939 DLC cannot connect to a black 9-pin receptacle.

A

False

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3
Q

Which of the following is true of a post-2014 J1939 DLC?

a. black 6-pin Deutsch connector
b. black 9-pin Deutsch connector
c. green 6-pin Deutsch connector
d. green 9-pin Deutsch connector

A

d. green 9-pin Deutsch connector

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4
Q

What current SAE J-standard is used as the backbone of a multiples data bus in current medium- and heavy-duty highway trucks?

A

J1939

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5
Q

True or False: PLC signals are superimposed over the blue auxiliary power line in a standard 7-pin trailer connector.

A

True

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6
Q

True or False: A ladder switch is type of smart switch that uses internal resistors to signal switch status.

A

True

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7
Q

What is the usual source address (SA) on a J1939 bus for an electronic transmission controller?

A

03

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8
Q

What is used to rate the speed of a transmission on a data bus?

A

Bandwidth

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9
Q

What field in a data packet contains the priority rating of the message?

A

Arbitration

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10
Q

When a global PGN is broadcast on a J1939 bus, which controller receives the data?

A

Any controller with an address on the bus

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11
Q

When observing a scoped view of a J1939 message packet, what is the usual voltage differential spread of content data if the bus is functioning normally?

A

2.0-volts

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12
Q

What OEM uses a 16-pin J1962 DLC to access its post-2014 J1939 data bus?

A

Volvo-Mack

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13
Q

How many cavity pins are used in the J1939 Deutsch DLC?

A

9

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14
Q

True or False: Some smart switches have processing capability.

A

True

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15
Q

True or False: Power line carrier (PLC) technology allows trailer ABS electronics to communicate with the tractor data bus.

A

True

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16
Q

What field in a data packet is used by receiver stations to indicate that they have received an uncorrupted message?

A

Ack

17
Q

Which of the following best describes the role of an FET in a smart switch transaction?

a. relay or amplifier
b. signal filter
c. transformer
d. electronic noise suppression

A

a. relay or amplifier

18
Q

True or False: The F-cavity in a green J1939 9-pin receptacle is smaller than in the black pre-2014 equivalent.

A

True

19
Q

What cavity pin on a standard J1939 controller is used for the J1939 dominant low (-) transmission?

A

D

20
Q

What will result if a smart switch is disconnected at the connector?

A

A fault code will be logged

21
Q

What is used to indicate the end of a data packet message?

A

EOF field

22
Q

What term is used to rate the data volume that can be transmitted on a data bus?

A

K-baud

23
Q

How man cavity pins are in a J1962 DLS?

A

16

OTC - Diesel Electrical DET-106 (6 decks)

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