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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110

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WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
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February 2010
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8.20.2 Request Message Definition (Table 208).
Table 208: DeviceControl Request Message
Data Byte Parameter Name
Cvt Hex Value Mnemonic
#1
DeviceControl Request Service Id
M
AE
SIDRQ
#2
CPIDNumber
M 00 thru FE
CPID
#3
#4
#5
#6
#7
CPIDControlBytes[] = [
ControlByte#1
ControlByte#2
ControlByte#3
ControlByte#4
ControlByte#5 ]
U
00 thru FF
00 thru FF
00 thru FF
00 thru FF
00 thru FF
CPIDCB_
CB_1
CB_2
CB_3
CB_4
CB_5
8.20.2.1 Request Message Sub-Function Parameter $Level (LEV_) Definition. 
This service does not use a
sub-function parameter.
8.20.2.2 Request Message Data Parameter Definition. 
Table 209 specifies the data parameter definitions for
this service.
Table 209: DeviceControl Request Message Data Parameter Definition
Definition
CPIDNumber
See message description section for definition of a CPID.
CPIDControlBytes[]
The control bytes are mapped such that multiple outputs can be controlled with a single request for this
service. Outputs which are likely to be controlled simultaneously during diagnostics should be grouped into the
same CPID.
8.20.3 Positive Response Message Definition (Table 210).
Table 210: DeviceControl Positive Response Message