車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 51 [UDS 12]
The SecurityAccess service has two major message patterns.
requestSeed.
Odd sub-functions.
sendKey.
Even sub-functions.
ISO14229
車両診断通信 
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 50 [UDS 11]
Review of P2 time.
P2 time is 1 second
Explanation of P2* time
P2* time is 5 seconds.
When the off-board tester receives NRC$78, it switches from P2 time to P2* time.
When the off-board tester receives NRC$78 again, it extends P2* time from there.
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 49 [UDS 10]
Click here for back issues. Introduction. Explanation of ISO 14229, UDS.I will explain PositiveResponse and NegativeResp...
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 48 [UDS 9]
Explains the session as defined in the ISO for DiagnosticSessionControl
Request message of DiagnosticSessionControl.
Response message of DiagnosticSessionControl.
P2 time and P2* time of the relevant session can be obtained.
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 47 [UDS 8]
There are five services to be realized by UDS simulation
DiagnosticSessionControl.
SecurityAccess.
TesterPresent.
ReadDataByIdentifier.
WriteDataByIdentifier.
When explaining the request and response messages, the CAN frame is not explained.
I will only explain the ISO 14229-1 layer and not the ISO 15765-2 layer.
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 46 [UDS 7]
Presentation of the overall structure of the USD simulation.
A-COMSTACK is AUTOSAR r3.x series and OpenSAR is AUTOSAR r4.x series.
Therefore, illegal construction.
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 45 [UDS 6]
Click here for back issues. Introduction. Explanation of ISO 14229, or UDS.This time, the open source AUTOSAR, which is ...
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 44 [UDS 5]
Routine explanation.
Mainly used for functions such as those used during development.
Explanation of Upload/Download.
A group of services for data transfer that can also compress and encrypt data.
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 43 [UDS 4]
Stored Data Transmission Description.
Getting and clearing DTC and freeze data.
Description of Input/Output Control.
I/O control of ECU.
While convenient, this service can be dangerous depending on the condition of the vehicle,so it is necessary to consider safety functions.
車両診断通信 [DoCAN] Vehicle Diagnostic Communication Part 42 [UDS 3]
Diagnostic services fall into six categories of functional units.
Diagnostic and Communications Management explained.
Session, Security, and Communications Control.
Data Transmission Description.
Read/write data by memory address and DID.