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



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Data Byte Parameter Name 
Cvt 
Hex Value Mnemonic 
#1 
ReadDataByParameterIdentifier Response Service Id 

62 
SIDPR 
#2 
#3 
parameterIdentifier # (1 
– k) = [
byte 1 (MSB) 
byte 2 (LSB)] 

00-FF 
00-FF 
PID_ 
B1 
B2 
#4 

#(m+3) 
dataRecord # (1 
– k) = [
data#1 

data#m ] 



00-FF 

00-FF 
PIDdata_ 
DATA_1 

DATA_m 
#(m+4) 
parameterIdentifier # (2 
– k) = [
byte 1 (MSB) 
byte 2 (LSB)] 

00-FF 

00-FF 
PID_ 
B1 
B2 
#(m+6) 

#(z+m+5) 
dataRecord # (2 
– k) = [
data#1 

data#z ] 



00-FF 

00-FF 
PIDdata_ 
DATA_1 

DATA_z 





#p 
parameterIdentifier # (k) = [
byte 1 (MSB) 
byte 2 (LSB)] 



00-FF 

00-FF 
PID_ 
B1 
B2 
#p+2 

#(x+p+1) 
dataRecord # (k) = [
data#1 

data#x ] 



00-FF 

00-FF 
PIDdata_ 
DATA_1 

DATA_x 
CameraLoops.com


GM WORLDWIDE ENGINEERING STANDARDS 
GMW3110 
© Copyright 2010 General Motors All Rights Reserved 
February 2010 
Page 109 of 336 
8.6.3.1 Positive Response Message Data Parameter Definition (Table 83). 
Table 83: Response Data Parameter Definition 
Definition 
ParameterIdentifier # (1 thru k) 
This parameter is an echo of one of the supported parameterIdentifier from the request message. 
dataRecord (#1 to #m,z,x) 
This parameter is used by the ReadDataByParameterIdentifier positive response message to provide the 
requested data record values to the tester. The length of this field is dependent upon the PID requested.
 
8.6.4 Supported Negative Response Codes (RC_). 
The following negative response codes (Table 84) shall 
be implemented for this service. 
Table 84: Supported Negative Response Codes 
Hex Description 
Cvt Mnemonic 
12 
SubFunctionNotSupported-InvalidFormat 
This response code shall be sent if the length of the request message is invalid. 
1. The message_data_length is less than 3 (need at least one PID requested + 
SID). 
2. The number of data bytes in the request exceeds 2 times the maximum number of 
PIDs allowed with a single request + 1. 
3. The number of bytes in the request message after the SID is not an even number. 

SFNS_IF 
22 
ConditionsNotCorrectOrRequestSequenceError 
This response code shall be sent if the operating conditions of the ECU are such that 
it cannot perform the required action (e.g., the data for a PID is stored in a satellite 
device and the link from the host to the satellite device has failed). This response 
code is not intended to be used if the ECU conditions are such that the request 
temporarily cannot be performed (e.g., the data must be retrieved from another 
processor internal to the ECU via a System Packet Interface (SPI) bus and will not be 
available within the required P2
c
time). Response code $78 is used when conditions 
are temporarily not met. If a node supports response code $22, the reason(s) to 
generate this response code must be documented in the CTS, SSTS, or 
supplemental diagnostic specification referenced by either of the two preceding 
documents, and must not conflict with any of the other negative response codes 
defined for this service. 

CNCRSE 
31 

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