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Home >> BMW >> 2001 >> Z8 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Bus System Troubleshooting - Overview - E36, E38, E39, E46, E52 & E53 >> Bus System Troubleshooting >> Review Questions

Review Questions

  1. What should be the voltage preset at a CAN line if checked with a multi-meter? Is the voltage the same on both lines?________________________________

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  2. Where are the Terminal resistors located in the CAN bus network? What should the measured resistance of the CAN circuit be? How is it checked?________________

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  3. Explain the differences of CAN-High and CAN-Low? How can they be distinguished from one another?____________________________________________________________

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  4. Which control units on the CAN bus contribute to the voltage necessary for communication? Describe the method to determine if one control unit is affecting communication.____________________________________________________________

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  5. What is the minimum voltage required at the D-bus?___________________________________

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  6. Why is checking a bus signal with an oscilloscope a practical option?_______________

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  7. Describe some quick tests that can help to determine if a bus line is currently operating ______________________________________________________________________.

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