Страница 1 мировой engineering стандарты общая спецификация

ReadDataByIdentifier ($1A) 
with specific DID to read certain ECU
Id data).

---

25.06.2020
WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
https://translate.googleusercontent.com/translate_f
245/298
© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 276 of 336
•
This step can only be performed after the enabling of the diagnostic response messages of
SPS_TYPE_C ECUs.
•
This step may be used for service (e.g., required for remote programming) to make sure that the
tester is connected to the same vehicle as during the Request Identification Information
Process.
20
Request the appropriate level of the 
ProgrammingMode ($A5) 
service used to determine if it is OK
to establish a programming event (send to all nodes/on all links).
•
On 
HS-CAN 
and 
MS-CAN 
the sub-parameter 
level $01 (requestProgramming) 
shall be used.
•
On 
LS-CAN 
the sub-parameter 
level $01 (requestProgramming) 
or 
level $02
(requestProgramming_HighSpeed) 
shall be used.
•
The tester shall verify that no negative responses are sent prior to the next step which enables
the programming mode.
•
All ECUs shall respond.
21
Enable programming mode with service 
InitiateProgramming ($A5) 
and sub-parameter 
level $03
(enableProgramming).
•
No response to this request from any ECU.
•
ECUs shall transition to high speed mode if high speed was specified in the previous step.
•
The tester shall transition its protocol device to high speed operation (if requested for the low
speed subnet) and wait before communicating at high speed 100 ms longer than the time value
specified in service $A5.
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---