Vehicle Communication Systems Latest Update
2026 | Exam Prep | Verified Questions & Answers
PDF | 100% Accurate Answers
1. If a vehicle's BCM is malfunctioning, what impact might this have on the
vehicle's configuration data management?
It would have no impact on vehicle operations.
It would only affect the engine performance.
It could lead to incorrect or lost vehicle configuration data, affecting
system operations.
It would enhance the vehicle's communication capabilities.
2. If a vehicle with CUSW architecture is experiencing communication issues,
which diagnostic tool would be most appropriate to troubleshoot the
problem?
A tire pressure monitoring system
A fuel injector tester
A CAN bus analyzer
An OBD-II scanner
3. What is the effect of a short to ground on the CAN-B (+) line?
It will only affect the CAN-A bus.
It will prevent communication on the CAN-B bus.
It will have no effect on communication.
It will enhance communication on the CAN-B bus.
4. In a High-speed CAN system, what voltage at Pins 6 or 14 of the DLC should
we expect to see when there is NO vehicle module communications
, happening? In other words, the "recessive state" of the network.
3.5 volts
5 volts
2.5 volts
1.5 volts
5. What is the expected voltage level on the CAN-B (-) line when the bus is
active and functioning properly?
Approximately 2.5V to 3.5V
12V
0V
5V
6. Which vehicle models are known to utilize the CUSW architecture?
Chrysler 200 and Dodge Dart
Chevrolet Malibu and Subaru Legacy
Honda Accord and Nissan Altima
Ford Fusion and Toyota Camry
7. Describe the significance of the CUSW architecture in vehicle communication
systems.
The CUSW architecture only applies to electric vehicles.
The CUSW architecture enhances communication efficiency and
supports advanced vehicle features.
The CUSW architecture is irrelevant to vehicle diagnostics.
, The CUSW architecture is primarily used for fuel efficiency.
8. If a vehicle's Atlantis-High network is experiencing communication issues,
what troubleshooting step involving splice block connectors should be
taken?
Check the integrity and connections of the splice block connectors.
Disconnect the battery to reset the communication network.
Reprogram the vehicle's ECU without inspecting connectors.
Replace the Security Gateway immediately.
9. If a vehicle's communication system is upgraded from CAN-C to CAN-FD,
what potential improvements could be expected in terms of data handling?
Increased compatibility with older vehicle models.
Lower power consumption during communication.
Reduced complexity in wiring and installation.
Increased data handling capacity and faster transmission speeds for
larger messages.
10. Describe the importance of the Loss of Comm Test in diagnosing vehicle
communication problems.
The Loss of Comm Test is used to evaluate the Security Gateway's
functionality.
The Loss of Comm Test helps in determining the specific vehicle
model associated with the issue.
The Loss of Comm Test is primarily used to measure voltage levels in
the communication network.
2026 | Exam Prep | Verified Questions & Answers
PDF | 100% Accurate Answers
1. If a vehicle's BCM is malfunctioning, what impact might this have on the
vehicle's configuration data management?
It would have no impact on vehicle operations.
It would only affect the engine performance.
It could lead to incorrect or lost vehicle configuration data, affecting
system operations.
It would enhance the vehicle's communication capabilities.
2. If a vehicle with CUSW architecture is experiencing communication issues,
which diagnostic tool would be most appropriate to troubleshoot the
problem?
A tire pressure monitoring system
A fuel injector tester
A CAN bus analyzer
An OBD-II scanner
3. What is the effect of a short to ground on the CAN-B (+) line?
It will only affect the CAN-A bus.
It will prevent communication on the CAN-B bus.
It will have no effect on communication.
It will enhance communication on the CAN-B bus.
4. In a High-speed CAN system, what voltage at Pins 6 or 14 of the DLC should
we expect to see when there is NO vehicle module communications
, happening? In other words, the "recessive state" of the network.
3.5 volts
5 volts
2.5 volts
1.5 volts
5. What is the expected voltage level on the CAN-B (-) line when the bus is
active and functioning properly?
Approximately 2.5V to 3.5V
12V
0V
5V
6. Which vehicle models are known to utilize the CUSW architecture?
Chrysler 200 and Dodge Dart
Chevrolet Malibu and Subaru Legacy
Honda Accord and Nissan Altima
Ford Fusion and Toyota Camry
7. Describe the significance of the CUSW architecture in vehicle communication
systems.
The CUSW architecture only applies to electric vehicles.
The CUSW architecture enhances communication efficiency and
supports advanced vehicle features.
The CUSW architecture is irrelevant to vehicle diagnostics.
, The CUSW architecture is primarily used for fuel efficiency.
8. If a vehicle's Atlantis-High network is experiencing communication issues,
what troubleshooting step involving splice block connectors should be
taken?
Check the integrity and connections of the splice block connectors.
Disconnect the battery to reset the communication network.
Reprogram the vehicle's ECU without inspecting connectors.
Replace the Security Gateway immediately.
9. If a vehicle's communication system is upgraded from CAN-C to CAN-FD,
what potential improvements could be expected in terms of data handling?
Increased compatibility with older vehicle models.
Lower power consumption during communication.
Reduced complexity in wiring and installation.
Increased data handling capacity and faster transmission speeds for
larger messages.
10. Describe the importance of the Loss of Comm Test in diagnosing vehicle
communication problems.
The Loss of Comm Test is used to evaluate the Security Gateway's
functionality.
The Loss of Comm Test helps in determining the specific vehicle
model associated with the issue.
The Loss of Comm Test is primarily used to measure voltage levels in
the communication network.
