General Specification Electrical Function gmw3110 General Motors Local Area Network Enhanced Diagnostic Test Mode Specification

Table 144: TransferData Negative Response Example 
T = Frame Sent By Tester, N = Frame Sent By Node; shaded region indicates PCI 
Frame Type 
CAN Id 
#1 
#2 
#3 
#4 
#5 
#6 
#7 
#8 
T(USDT-FF) 
$241 
$10 
$FE 
$36 
$00 
$23 
$FF 
aa 
bb 
N(USDT-FC) 
$641 
$30 
$00 
$00 
--- 
--- 
--- 
--- 
--- 
T(USDT-CF) 
$241 
$21 
cc 
dd 
ee 
ff 
gg 
hh 
ii 
: 
T(USDT-CF) 
$241 
$2x 
xx 
yy 
zz 
--- 
--- 
--- 
--- 
N (USDT-SF) 
$641 
$03 
$7F 
$36 
$78 
--- 
--- 
--- 
--- 
: 
N (USDT-SF) 
$641 
$03 
$7F 
$36 
$85 
--- 
--- 
--- 
--- 
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GM WORLDWIDE ENGINEERING STANDARDS 
GMW3110 
© Copyright 2010 General Motors All Rights Reserved 
February 2010 
Page 167 of 336 
8.13.6 Node Interface Function. 
8.13.6.1 Node Interface Data Dictionary (Table 145). 
Table 145: Node Data Dictionary of TransferData Service Pseudo Code 
Variable/Meaning 
Values 
message_data_length 
TransferData_Allowed
Reference Common/Global 
Pseudo Code Data 
Dictionary For Definition Of 
These Flags/Variables 
C_NumAddrBytes 
This is a constant that is used in the pseudo code to handle different length 
values in the startingAddress parameter. 
Set to number of bytes in 
startingAddress parameter 
8.13.6.2 Node Interface Pseudo Code. 
If a node supports boot software then the operational software only 
needs minimum support of this service. This is true for nodes with boot software because a service $34 
transitions the program operation back to the boot software (see service $34) and the $34 service is required 
before the $36 service is allowed. ECUs with boot software only need to support the Serv_36_Msg_Recvd() 
pseudo code in the operational software and the Boot_36_Msg_Recvd() in the boot software. ECUs that do not 
have boot software shall support the functionality of the Boot_36_Msg_Recvd() pseudo code in the operational 
software. 
BEGINFUNCTION Serv_36_Msg_Recvd() 
send Negative Response ($7F $36 $22)/* conditions not correct since the $34 service is not active if the ECU 
is executing the operational software. */ 
ENDFUNCTION 
BEGINFUNCTION Boot_36_Msg_Recvd() 
/* The check below for $Level $80 is only needed if that sub function is supported by the ECU */ 
IF ( (($Level != $00) AND ($Level != $80)) OR
(message_data_length < (2+C_NumAddrBytes)) OR 
(($Level = $00) AND (message_data_length < (3+C_NumAddrBytes ))) ) THEN 
send Negative Response ($7F $36 $12) /* invalid format */ 
ELSE IF (TransferData_Allowed = NO) THEN 
send Negative Response ($7F $36 $22) 
ELSE IF(($startingAddress is invalid) OR ($startingAddress + (message_data_length - $02 - 
C_NumAddrBytes) is invalid)) THEN 
send Negative Response ($7F $36 $31) /* Request out of range */ 
ELSE 
SELECT FIRST 
WHEN ($Level = $DL)/* $00 Download */ 
IF (the node cannot process the request within P2
C
) THEN
send Negative Response ($7F $36 $78) /* RequestCorrectlyReceived-ResponsePending */ 
perform any necessary actions to the data block /*, i.e., program to flash memory etc.*/ 
ENDIF 
IF (errors are detected) THEN 
send the appropriate negative response ($7F $36 $22) or ($7F $36 $83) or ($7F $36 $85).
ELSE 
send ($76) /* programming of block successfully completed */ 
ENDIF 
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