ADT Network Communication & CAN Bus Systems

Question 1

What is the standard data transmission speed of the high-speed powertrain CAN bus used in Audi vehicles?

Accepted Answer

500 kbps

Answer

33.3 kbps

Answer

125 kbps

Answer

1 Mbps

Question 2

Which two conductors form the twisted pair in an Audi CAN bus network?

Accepted Answer

CAN High and CAN Low

Answer

CAN High and chassis ground

Answer

CAN Low and 12V supply

Answer

Signal wire and shield wire

Question 3

What is the standard termination resistance value placed at each physical end of a CAN bus network?

Accepted Answer

120 ohms

Answer

60 ohms

Answer

100 ohms

Answer

150 ohms

Question 4

With all modules disconnected, a technician measures resistance across CAN High and CAN Low. What reading confirms both termination resistors are present and correct?

Accepted Answer

60 ohms

Answer

240 ohms

Answer

120 ohms

Answer

0 ohms

Question 5

What is the CAN High wire voltage during a dominant bit in a standard Audi high-speed CAN bus?

Accepted Answer

3.5V

Answer

0V

Answer

1.5V

Answer

2.5V

Question 6

Which Audi/Volkswagen Group factory diagnostic software is the current standard for CAN network diagnosis, guided fault finding, and ECU flash programming?

Accepted Answer

ODIS (Offboard Diagnostic Information System)

Answer

VCDS (VAG-COM)

Answer

ISTA+

Answer

GlobalTIS

Question 7

Which CAN network variant in Audi vehicles typically operates at 100 kbps and is used for comfort and body electronic modules?

Accepted Answer

Low-speed fault-tolerant CAN (LS-CAN)

Answer

High-speed CAN (HS-CAN)

Answer

FlexRay

Answer

MOST bus