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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Table C40: Definition of Subnet Config Lists for GMLAN Expansion Busses dataIdentifier
DID Description
R/W Data Type
Len
$E8 
Subnet_Config_List_GMLANPowertrainExpansionBus (SCLGPEB)
R/W
BIN
≥ 2
This DID contains the SCLGPEB.
Each bit represents one ECU (with unique Diagnostic Address, see Appendix D) that can exist on the
Powertrain expansion bus subnet. A logic “1” indicates that a given ECU is present on the vehicle. The
bit mapping of ECUs must be documented in a CTS, SSTS, or supplemental diagnostic specification.
Example:
HCP Hybrid Control Processor
MCP1 Motor Control Processor 1
MCP2 Motor Control Processor 2
Position
1
2
Bit location
7
6 to 1
0
7
6 to 1
0 ---
Bit state
0
…
1
1
…
1 ---
DA (hex)
J3200
---
…
CE
CF
…
17
---
ECU name
---
… MCP1 MCP2
…
HCP ---
Hex value
01
81
---
Table C41: Definition of Subnet Config Lists for GMLAN Expansion Busses dataIdentifier
DID Description
R/W Data Type
Len
$E9 
Subnet_Config_List_GMLANFrontObjectExpansionBus
(SCLGFOEB)
R/W
BIN
≥ 2
This DID contains the SCLGFOEB.
Each bit represents one ECU (with unique Diagnostic Address, see Appendix D) that can exist on the
expansion bus subnet. A logic “1” indicates that a given ECU is present on the vehicle. The bit mapping
of ECUs must be documented in a CTS, SSTS, or supplemental diagnostic specification.
Example:
EOCM-R External Object Control Module - Front
Position
1
2
Bit location
7
6 to 1
0
7 6 to 1
0
---
Bit state
0
…
0
0
…
1
---
DA (hex)
J3200
---
…
---
---
…
6C
---
ECU name
---
…
---
---
… EOCM-F ---
Hex value
00
01
---

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February 2010
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