This seminar covers the intricacies of CAN-bus systems, ECU internals, in-depth diagnostics and practical faults. CAN databus training is a high-paced
training for diagnostic experts.
THe following are some of the topics covered in CAN databus training:
CAN-bus background. The CAN-bus packet is broken down into its individual components and explained. Terms such as Identifier bits, EOF and CRC are explained in depth. The individual parts of the CAN-bus packet are recorded and analysed with the ATS oscilloscope. We look at how CAN signals are produced by looking at the internal construction of the ECU. What the CPU "sees" is the important during diagnostics. The practical implications are never forgotten and the data being analysed is always related back to a workshop situation.
ECU priority on CAN. The many different ECUs in modern vehicles all have something to say, what determines who gets to talk first? This is where a detailed understanding of CAN prioritisation is necassary. This topic is covered in great detail, right down to the hardware switching and voltage levels.
Acknowledge. All ECUs on the bus share data. How does the transmitting ECU know that the data is received correctly? Diagnostically we will look at what happens when this ACK pulse is missing and how it is generated.
CAN-bus Data. The CAN-bus data is what it is all about, however little can be changed to the data provided the inputs to the relevant ECUs and the bus are in correct working order. This part of the training covers why you see live-data lines repeated in some ECUs, where the data originates from and redundancy calculations.
Real failures. The training course is nicely wrapped up by using all the information learnt in the previous chapters to analyse a series of real failures.
AECS is catering for all levels of diagnosticians, with Training, Equipment and Tech support. Our technical help desk is our way to keep our feet on the ground and the best way to find out what problems are out there. It helps us improve and create training seminars like the CAN 1 training. You won’t be bombarded with hours of boring theory, nor are we doing speed training (…). Our training is practical and most of all FUN.
Hope to see you in one of our seminars this year!
Please note: the seminar is SCOPE based. Signals referred to are scope signals.
The diagnostician can bring his (hers) own scope, or our dual channel scopes (ATS) can be used.
Particularly with CAN-bus diagnostics a fast recording scope is needed (10 MS/sec or more).
Pre requisite: From experience we strongly advise that the diagnostician has completed the AED 'Automotive Electronic Diagnostics' two day training seminar, regardless of achieved level through other training systems or experience!
After Billy from Otago Auto Trimmers attended the CAN training seminar in Dunedin (22-Jun-16). Billy wrote as comment in the evaluation form that as most value to him was: "finding out values of CAN bus and its communication system."