Vehicle Communication System Study Guide Latest
Update 2026 | 100% Accurate Answers | Pass Guarantee
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1. If an Automotive Ethernet network is upgraded to support higher speeds,
what potential benefits could this provide for vehicle diagnostics?
Reduced need for diagnostic tools
Increased complexity in troubleshooting
Lower compatibility with existing systems
Faster data transfer for real-time diagnostics
2. Which vehicles are identified as using splice block connectors on their CAN
buses?
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3. Describe the significance of measuring the voltage on the CAN-B(-) line in a
vehicle communication system.
It measures the speed of the vehicle.
It indicates the temperature of the vehicle's engine.
It shows the fuel level in the tank.
Measuring the voltage on the CAN-B(-) line helps verify that the
communication bus is active and functioning properly.
,4. Describe the significance of measuring the voltage on the CAN-C(-) bus in a
vehicle communication system.
It indicates the speed of data transmission on the bus.
It shows the amount of data being transmitted.
Measuring the voltage on the CAN-C(-) bus helps verify that the bus
is active and functioning without faults.
It determines the type of diagnostic tool needed.
5. Describe the implications of a short to ground on the CAN-B(+) line in vehicle
communication systems.
A short to ground on the CAN-B(+) line has no impact on the
communication process.
A short to ground on the CAN-B(+) line improves the signal strength,
facilitating better communication.
A short to ground on the CAN-B(+) line only affects the security
gateway.
A short to ground on the CAN-B(+) line disrupts the voltage levels
necessary for communication, leading to a failure in data
transmission.
6. If a vehicle's Atlantis-high network is experiencing communication issues,
what troubleshooting step involving splice block connectors should be
taken?
Replace the entire network wiring.
Disconnect the battery to reset the system.
Check the integrity of the splice block connections.
Update the vehicle's software.
, 7. What is one of the main advantages of CAN-FD over CAN-C?
simpler architecture
fixed bit rates
lower voltage
flexible bit rates
8. If the voltage measured on the CAN-C(-) bus is significantly lower than 2.5V
while the bus is active, what troubleshooting step should be taken?
Replace the security gateway.
Check for wiring issues or short circuits in the CAN network.
Update the diagnostic software.
Increase the voltage supply to the bus.
9. Describe how a loss of communication test can assist in diagnosing issues
within vehicle communication systems.
A loss of communication test helps identify and isolate intermittent
communication issues that may affect vehicle performance.
A loss of communication test assesses the overall health of the
vehicle's battery.
A loss of communication test is primarily for updating diagnostic
software.
A loss of communication test is used to measure the voltage across
different networks.
10. Describe the impact of a locked security gateway (SGW) on vehicle
diagnostics.
Update 2026 | 100% Accurate Answers | Pass Guarantee
| PDF Download
1. If an Automotive Ethernet network is upgraded to support higher speeds,
what potential benefits could this provide for vehicle diagnostics?
Reduced need for diagnostic tools
Increased complexity in troubleshooting
Lower compatibility with existing systems
Faster data transfer for real-time diagnostics
2. Which vehicles are identified as using splice block connectors on their CAN
buses?
ga alfa giulia, mp jeep compass
mp jeep wrangler, ga fiat 500
ga jeep renegade, mp chrysler pacifica
mp dodge charger, ga alfa romeo
3. Describe the significance of measuring the voltage on the CAN-B(-) line in a
vehicle communication system.
It measures the speed of the vehicle.
It indicates the temperature of the vehicle's engine.
It shows the fuel level in the tank.
Measuring the voltage on the CAN-B(-) line helps verify that the
communication bus is active and functioning properly.
,4. Describe the significance of measuring the voltage on the CAN-C(-) bus in a
vehicle communication system.
It indicates the speed of data transmission on the bus.
It shows the amount of data being transmitted.
Measuring the voltage on the CAN-C(-) bus helps verify that the bus
is active and functioning without faults.
It determines the type of diagnostic tool needed.
5. Describe the implications of a short to ground on the CAN-B(+) line in vehicle
communication systems.
A short to ground on the CAN-B(+) line has no impact on the
communication process.
A short to ground on the CAN-B(+) line improves the signal strength,
facilitating better communication.
A short to ground on the CAN-B(+) line only affects the security
gateway.
A short to ground on the CAN-B(+) line disrupts the voltage levels
necessary for communication, leading to a failure in data
transmission.
6. If a vehicle's Atlantis-high network is experiencing communication issues,
what troubleshooting step involving splice block connectors should be
taken?
Replace the entire network wiring.
Disconnect the battery to reset the system.
Check the integrity of the splice block connections.
Update the vehicle's software.
, 7. What is one of the main advantages of CAN-FD over CAN-C?
simpler architecture
fixed bit rates
lower voltage
flexible bit rates
8. If the voltage measured on the CAN-C(-) bus is significantly lower than 2.5V
while the bus is active, what troubleshooting step should be taken?
Replace the security gateway.
Check for wiring issues or short circuits in the CAN network.
Update the diagnostic software.
Increase the voltage supply to the bus.
9. Describe how a loss of communication test can assist in diagnosing issues
within vehicle communication systems.
A loss of communication test helps identify and isolate intermittent
communication issues that may affect vehicle performance.
A loss of communication test assesses the overall health of the
vehicle's battery.
A loss of communication test is primarily for updating diagnostic
software.
A loss of communication test is used to measure the voltage across
different networks.
10. Describe the impact of a locked security gateway (SGW) on vehicle
diagnostics.
