Страница 1 мировой engineering стандарты общая спецификация

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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Table 182: Supported Negative Response Codes
Hex Description
Cvt Mnemonic
12
SubFunctionNotSupported-InvalidFormat
This code is returned if the request message length is incorrect.
This code is also returned if the requested sub-function is not locally supported.
M
SFNS-IF
31
RequestOutOfRange
This response code is returned if the DTC and FaultType combination
requested with sub-function $80 is not supported by the ECU.
M
1
ROOR
78
RequestCorrectlyReceived-ResponsePending
This code may be returned if DTC information is being written at the time of the
request (depending on memory architecture).
The ECU cannot process the request message and send the first (or only)
UUDT positive response within the P2
C 
timing requirements.
C
RCR-RP
Where:
M
1 
= Mandatory if sub-function $80 is supported.
8.18.5 Message Flow Examples - ReadDiagnosticInformation. 
The examples below illustrate the operation
of each sub-function parameter of service $A9 ReadDiagnosticInformation. The following is assumed for all of
the examples:
•
CAN Identifiers for the ECM (node #1) are $241 (USDT Req) and $541 (UUDT Resp).
•
CAN Identifiers for the TCM (node #2) are $243 (USDT Req) and $543 (UUDT Resp).
•
The ECM and TCM are the only ECUs connected to the theoretical GMLAN sub-network over which the
following messaging examples are conducted.
8.18.5.1 Example #1 - Read Status of DTC by DTC Number. 
This example (Table 183) demonstrates how a
tester can request a node to report the status of DTC P0700 ($0700) FailureType $02. The request with $Level
= $80 is followed by a positive ($80) UUDT response message including the DTCH, DTCL, DTCFT, DTCSB.