CAN Bus Quiz

What is the typical voltage range for CAN L and CAN H bus lines?

• 3.4 V - 4.0 V pk-pk

• 2.0 V - 3.0 V pk-pk

• 4.5 V - 5.0 V pk-pk

• 1.0 V - 2.0 V pk-pk

What should be done before using a DMM to measure the resistance of the CAN bus lines?

• Increase the voltage

• Switch off the power and allow voltages to dissipate

• Connect to a power source

• Measure the current

What is the approximate resistance between any two points on either of the bus lines?

• 10 Ω

• 5 Ω

• 0 Ω

• 100 Ω

Why is the resistance to ground and between the bus lines very high on an auxiliary CAN bus?

• Due to high voltage

• Because there are no terminating resistors

• Because of low current

• Due to short circuit

Where should the CAN bus analyzer be connected?

• To the power supply

• To the diagnostic socket

• To the battery

• To the ground

What will the analyzer report if the bus is working normally?

• Error codes

• Low voltage

• No codes could be found

• High resistance

What is the purpose of terminating resistors in a CAN bus system?

• To increase the voltage

• To reduce electromagnetic interference

• To decrease the current

• To ensure proper signal transmission

How can you identify a fault in the CAN bus network using a multimeter?

• By measuring the voltage drop across the bus lines

• By checking the resistance between the bus lines and ground

• By measuring the current flow in the bus lines

• By observing the frequency of the signals

What is the function of the CAN controller in a vehicle's network?

• To provide a backup power source

• To supply power to the bus lines

• To convert analog signals to digital

• To manage data transmission and reception

What is the role of a CAN transceiver in a CAN bus system?

• To amplify the signal

• To provide power to the bus

• To measure the resistance of the bus lines

• To convert data from the CAN controller to the bus lines