Bus System Troubleshooting - Overview - E36, E38, E39, E46, E52 & E53

• Bus System Troubleshooting
  • Notes
  • Introduction
  • Definitions
    • Bus Line
    • Bus Subscriber
    • Gateway
    • Master Controller
    • Serial Data
    • Topology
  • Controller Area Network (CAN Bus)
    • Introduction
    • CAN Bus Topology
    • Troubleshooting The CAN Bus
      • Notes
      • Failure Of The CAN Bus Cables
      • Example Of Correctly Operating CAN Bus
      • Examples Of Defective CAN Bus Signals
      • Rapid Constant Fixed Duty Cycle For 10 Seconds
      • Constant Fixed Duty No Time Limit
      • Flat Line At 2.5 Volts
      • CAN High Shorted To CAN Low
      • Failure Of One Of The Control Units Attached To The Can
        • Notes
        • E38/E39 Style Diagnosis Test Module
        • E46 Style Diagnosis Test Module
      • Failure Of The Voltage Supply To Individual Modules
      • Interference In The CAN Bus Cables
      • Programming
  • Diagnosis Bus (D-Bus)
    • Introduction
    • D-Bus Topology
    • Troubleshooting The D-Bus
      • Notes
      • Failure Of The D-Bus Cable
  • Information and Body Bus (I and K bus)
    • Introduction
    • I/K Bus Topology
    • Troubleshooting The I/K Bus
      • Notes
      • On E38 And E39/E53 High Version Vehicles:
      • On E46, E52 And E39/E53 Base Version Vehicles:
      • Failure Of The Bus Cable
      • Example Of Correctly Operating I/K Bus During Communication
      • Flat Line At 12 Volts
      • Flat line at 5 volts
      • Failure Of One Of The Control Units Attached To The I/K Bus.
      • Failure Of The Voltage Supply To Individual Modules.
      • Interference In The Bus Cables.
  • Peripheral Bus (P-Bus)
    • Introduction
    • P-Bus Topology
    • Troubleshooting The P-Bus
  • Motor Bus (M-Bus)
    • Introduction
    • M-Bus Topology
    • M-Bus Troubleshooting
      • Notes
      • Example Of Correctly Operating M-Bus
      • Failure Of The Bus Ribbon
  • Review Questions