Chapter 10: Vehicle Communication Networks – CAN Bus,
LIN, FlexRay & Automotive Ethernet Complete Study Guide
2026
1. Multiplexing: provides the ability to use a single circuit to distribute and share data between several control
modules throughout the vehicle
2. the need for bulkier wiring harnesses: By using the same wiring data networks, multiplexing
minimizes the need for what?
3. Protocol: a language computers use to communicate with one another over the data bus
4. Class A: Low-speed protocol and has a baud rate of up to 10kb/s
5. Class B: Medium-speed protocol has a baud rate between 10kb/s and 125 kb/s
6. Class C: High-speed protocol with a baud rate between 125kb/s and 1,000 kb/s
7. the level of importance of the module: Each protocol is utilized in ditterent situations on the
network depending on what?
8. ISO 9141-2 Protocol: − Class B system with a band rate of 10.4 kb/s
– It is not a network protocol and is only used for diagnostic purposes
9. ISO 14230-4 Protocol: - Used by European manufacturers
- Utilizes the ISO 9141 protocol with a baud rate of 10.4 kb/s
10. J1850 Protocol: - Class B standard for OBD II
- Ford calls Standard Corporate Protocol
- GM calls it Class 2
- Chrysler calls it Programmable Communication Interface
11. J2284/ISO 15765-4 Protocol: - Controller Area Network
- It supports baud rates up to 1 Mb/s to allow for real-time control of specific systems
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LIN, FlexRay & Automotive Ethernet Complete Study Guide
2026
1. Multiplexing: provides the ability to use a single circuit to distribute and share data between several control
modules throughout the vehicle
2. the need for bulkier wiring harnesses: By using the same wiring data networks, multiplexing
minimizes the need for what?
3. Protocol: a language computers use to communicate with one another over the data bus
4. Class A: Low-speed protocol and has a baud rate of up to 10kb/s
5. Class B: Medium-speed protocol has a baud rate between 10kb/s and 125 kb/s
6. Class C: High-speed protocol with a baud rate between 125kb/s and 1,000 kb/s
7. the level of importance of the module: Each protocol is utilized in ditterent situations on the
network depending on what?
8. ISO 9141-2 Protocol: − Class B system with a band rate of 10.4 kb/s
– It is not a network protocol and is only used for diagnostic purposes
9. ISO 14230-4 Protocol: - Used by European manufacturers
- Utilizes the ISO 9141 protocol with a baud rate of 10.4 kb/s
10. J1850 Protocol: - Class B standard for OBD II
- Ford calls Standard Corporate Protocol
- GM calls it Class 2
- Chrysler calls it Programmable Communication Interface
11. J2284/ISO 15765-4 Protocol: - Controller Area Network
- It supports baud rates up to 1 Mb/s to allow for real-time control of specific systems
1/4
