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

9.0 V
DC
 
≤ (V
p
) 
≤ 16.0 V
DC
. 

The number of programming cycles shall be documented in a CTS or SSTS. Type 3 memory used solely 
for programming (i.e., not updated by operational software during normal vehicle operation) requires a 
minimum of 100 erase/write cycles. 
Note:
The voltage levels for retaining memory contents specified in this section are for use during a 
programming event. Product performance requirements will most likely result in more stringent requirements. 
9.3.2 Software Requirements. 
An SPS_TYPE_A ECU shall be capable of reporting the base model part 
number (DIDs $CC/$DC), end model part number (DIDs $CB/$DB), and all supported software module part 
numbers (DIDs $C1 thru $CA/$D1 thru $DA, plus $DD and any application specific DIDs if more than 
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GM WORLDWIDE ENGINEERING STANDARDS 
GMW3110 
© Copyright 2010 General Motors All Rights Reserved 
February 2010 
Page 251 of 336 
10 software/calibration parts exist) via the ReadDataByIdentifier ($1A) service. Support of other DIDs (e.g., 
$92, $97, $98, $99) is optional and shall be specified in the CTS if needed. 
9.3.2.1 Operational Software. 
If the operational software is programmable via SPS, then the operational 
software shall be capable of being programmed separately from the calibrations. This allows for assembly 
plant programming of only calibrations. Deviations from this requirement must be agreed upon by appropriate 
release responsible engineer, service operations and manufacturing representatives and shall be documented 
in the CTS. 
The operational software shall have its own unique identifier retrievable via the ReadDataByIdentifier ($1A) 
service.