Item No.: CO4204-7K

Course: CAN bus in automotive

With the UniTrain course "CAN bus in motor vehicles", trainees receive the perfect introduction to the most commonly used bus system to be found in motor vehicles. The CAN bus is used in practically every area of the motor vehicle and for that reason deserves special attention in automotive training. With this course the trainees learn how to understand the CAN bus by becoming familiar with both its function and its purpose. For that reason the course is particularly tailored for the automotive trainee target group, i.e. in that the theoretical portion focuses on essential and relevant material and on reaching the primary goal – namely automotive diagnostics. For this the trainee performs measurements on the CAN bus and learns how to interpret the signal traces obtained. Moreover, the trainee works with a simplified data matrix to be able to clearly trace the communication procedures in a CAN network. The last step involves having the defined ISO faults enabled in the training system which should put the trainee in a position to carry out realistic workshop diagnoses. Since the training system uses a real CAN bus as a foundation, there is also the opportunity of connecting the training system with the CAN bus of a real motor vehicle.

Course contents:

  • List of reasons for increasing use of bus systems in vehicles
  • Identifying various bus systems in vehicles
  • Introduction to the topology and components of a CAN bus in a vehicle
  • Introduction to the difference between low-speed and high-speed CAN buses
  • Experimental determination of electrical properties of a CAN bus
  • Experimental determination of (low-speed and high-speed CAN buses)
  • Introduction to the principles of addressing and arbitration on a CAN bus
  • Determining identifiers by measurement
  • Introduction to the structure of a message frame for a CAN message
  • Analysis of CAN packets using the CAN monitor and an oscilloscope
  • Interpretation of CAN packets using the CAN monitor and an oscilloscope
  • Editing and transmitting CAN message via PC
  • Investigating the effect of termination on a low-speed and high-speed CAN bus by measurement
  • Fault simulation (8 simulated faults activated by relay)
  • Course duration 7 h approx. (fault finding 1.5 h approx.)

Includes:

  • 2 Experiment cards (front and rear of vehicle) with emulation of a complete CAN bus system for cars including actuators, sensors and dashboard
  • Two microcontroller systems with communication via the CAN bus
  • Cascading via CAN-IN and CAN-OUT on Sub-D9 connectors
  • CAN node I with indicators, lights, simulated key, fuel tank indicator, temperature sensors, and more
  • CAN node II with rear light, fuel tank simulation, electric window, central locking functions, and more
  • Storage case
  • Labsoft browser and course software

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