Diagnostic Communication : Diagnostic Communication is base of Automotive Diagnostics . It is an exchange of Diagnostic messages between an two entities. Those could be two , ECUs or ECU and Tester Application.or it could be a group of ECUs and a tester application The basic components of the diagnostic communication are : A Diagnostic Message : It could be of these types - 1. A Request 2. A Response 3. A Negative Response Code Diagnostic Address : 1. Functional 2. Physical Diagnostic Protocol : 1. UDS 2. J1939 3. KWP 2000 etc. Supporting Protocols : 1. CAN 2. Ethernet 3. K-line ,etc What is Diagnostic Protocols ans supporting Protocols ? ECUs and tester communication are connected to each other by physical or wireless media. They exchange messages (requests and responses) over that physical or wireless channel. It is same as we connect to each other over internet or phone...
This blog will educate new enthusiast about an interesting field of Automotive Diagnostics.