[UDS unified diagnosis service] i. diagnosis overview (1) - diagnosis overview

UDS：Unified Diagnostic Services, Unified diagnostic service

One 、 Diagnostic overview （1）— Diagnostic overview

1. What diagnosis can do ？

Commonly used ： Function monitoring ; Error detection ; Record 、 Store fault information ; Read data, etc
other ：EOL; Reprogram ; Node validation （VIN…） etc.

A term is used to explain ：
EOL（End of Line）： The whole vehicle goes offline （EOL） The test is dedicated to the fault diagnosis of the whole vehicle 、 Functional verification and other tests , As the last inspection process of vehicle delivery to customers . For new energy vehicles , Based on the traditional production line test equipment , Need to develop special software EOL Test equipment .

VIN：vehicle identification number Vehicle identification code
Follow every country / The applicable legal provisions of the regional authority , Unique identification number for each vehicle .

further , What are the conditions for the realization of the diagnostic function ？ That's it —— Diagnostic criteria .

2. Diagnostic criteria

Relevant diagnostic specifications ：

Subsequent articles , We mainly focus on UDS and Diagnostic on CAN, namely ISO14229-1 and ISO15765 On .

3. Diagnostic framework and mechanism