WORLDWIDE
ENGINEERING
STANDARDS
General Specification GMW3103
General Specification for Electrical/Electronic Components and
Subsystems, Electromagnetic Compatibility
Global EMC Component/Subsystem Validation Acceptance Process
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Originating Department: North American Engineering Standards Page 1 of 42
1 Introduction
Note: Nothing in this standard supercedes applicable laws and regulations.
Note: In the event of conflict between the English and domestic language, the English language shall take
precedence.
1.1 Scope. This document applies to the Electromagnetic Compatibility (EMC) design, development and
validation of electrical/electronic components and subsystems for passenger vehicles, light duty trucks and
medium duty trucks.
This document is one out of a series of three global EMC documents that specify EMC test and validation
requirements. The complete series consists of the following documents:
GMW3091, GMW3097, and GMW3103.
1.2 Mission/Theme. This document specifies the Global Electromagnetic Compatibility
Component/Subsystem Validation Acceptance Process to ensure components and subsystems are properly
designed, developed and validated prior to vehicle validation.
1.3 Classification. Not applicable.
2 References
Note: Only the latest approved standards are applicable unless otherwise specified.
2.1 External Standards/Specifications.
ISO 7637-2 SAE J2602
2.2 GM Standards/Specifications.
GMW3059 GMW3091 GMW3122
GMW3089 GMW3097
2.3 Additional References.
CG3044
Best Practice - The supplier shall work with the GM responsible engineer to comprehend this requirement
General Motors Component EMC and Environmental Test (CEMENT) Database
Production Part Approval Process (PPAP)
3 Requirements
3.1 Requirements. The Global EMC Component/Subsystem Validation Acceptance Process defined within
this document shall be followed for all EMC component/subsystem design, development and validation.
Appendix B: EMC Lessons Learned should be reviewed and considered prior to the first electrical design and
layout of the product. Unless otherwise agreed upon by the GM Design/Release-Responsible Engineer, the
initial draft of Appendix A: Component EMC Test Plan shall be completed by the supplier and uploaded in the
Component EMC and Environmental Test (CEMENT) database within 60 days (less than 12 weeks from
supplier sourcing) prior to the start of EMC testing, with the final version required within 10 days prior to the
start of testing. (Refer to Figure A1 in Appendix A).
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
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GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 2 of 42
An editable version of Appendix A can be obtained on request from the GM EMC Engineer via the Global
Document Management (GDM) database, or from GM's Engineering Standards distributor, IHS Inc.
(www.ihs.com), where the blank template is referenced as CG3044.
3.2 Process.
3.2.1 Design, Build, and Validate Design Iteration. The objectives of the Design, Build and Validate Design
Iteration phase shown in Figure 1, include component/subsystem design, development and validation. Design
validation shall occur during this phase to confirm all Electromagnetic Compatibility technical requirements
contained in the Component/Subsystem Technical Specification are met.
An EMC Detailed Design Review, shown in Figure 1, shall be conducted for all new components and
subsystems and applications, and for revisions to existing components and subsystems that could affect
Electromagnetic Compatibility compliance. This process does not apply to carryover components or
subsystems. The term carryover means that the product qualified for a prior program and is exactly the same
product being used for the future program. Modifications, alterations, internal part swaps, hardware and
software changes are not considered carryover and must be validated according to the requirements.
Detailed Design Review(s) shall be scheduled and led by the supplier, and attended by the EMC Design
Review Team.
The GM Design/Release-Responsible Engineer must be consulted on scheduling and informed of all design
review results and supplier action plans. The GM Validation-Responsible Engineer's acceptance of review
results and supplier action plans does not relieve the supplier of the obligation to meet contracted performance
requirements.
The objectives of the Detailed Design Review should be to:
Review component/subsystem schematic design and circuit board layout.
Examine any prior relevant analysis, calculations and test results.
Evaluate potential changes to the component/subsystem design.
Propose solutions to problems and appropriate revalidation.
Verify that the proposed design and circuit board layout satisfies component/subsystem EMC technical
and validation requirements.
The GM Design/Release-Responsible Engineer may also schedule a design review on his/her own initiative, or
upon the advice of a GM EMC engineer. The GM Design/Release-Responsible Engineer may make any
appropriate arrangement for leadership of such a review or delegate the actual review activity to other team
members.
Supplier Deliverables: Documentation required to be delivered, as one package, to vehicle manufacturer
EMC design review team at least 10 working days ahead of the scheduled meeting:
Printed Circuit Board (PCB) Layout.
Components List.
Hardware Schematic Drawing.
Component Placement Drawing.
Functional Description.
Interface Description.
EMC Math Simulation Results (if available).
EMC Test Reports (if available).
EMC Component Test Plan (Appendix A of GMW3103, may be referred to as CG3044), in electronic
editable format.
Note: Actual hardware samples or physical mock-up for visual examination is desirable but not required.
Electronic documents must be in an editable format compatible with Microsoft Office.
Design Analysis and Performance. Design analysis and performance is a part of the design review. In a
design review the supplier shall demonstrate and give technical rationale for the following:
EMC filter design and performance, characterization data for proposed input/output (I/O) filtering, clock
circuits, bypassing and decoupling.
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
--``,`,,```,,`,,`,,`,,```,,`-`-`,,`,,`,`,,`---
GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 3 of 42
Number of PCB layers in combination with use of selected clock frequency and housing material.
Identification and protection of critical/susceptible parts to both emission and immunity (including Transient
and Electrostatic Discharge (ESD) protection).
Identification of fundamental operating frequencies: clock rates, switching frequencies, and other potential
coherent EMC sources.
Initial EMC test results shall be studied and reviewed, and if not available, identify when review of test results
can be done. Some of the data may include:
Output waveforms for all pulsed, pulse width modulated (PWM), or power outputs indicating the dV/dt, and
dI/dt.
Provide output voltage and current time domain measurements for power outputs and inputs.
Review results of performed radiated emissions and immunity testing.
Provide data from other modules which may have used similar components.
Resources needed for a successful EMC design review (other specialists, engineers, purchasing or managers
depending on situation and complexity.)
GM:
o EMC Specialist and/or EMC Release Engineer
o Design/Release-Responsible Engineer and/or
o Component/System Responsible Engineer (optional)
o Validation-Responsible Engineer (optional)
Supplier:
o Hardware/Design Responsible Engineer
o EMC Engineer/Specialist
o Project/System Responsible Engineer (optional)
o Validation Engineer (optional)
3.2.2 Vehicle Validation and Component/Subsystem Production Release. The objectives of the Vehicle
Validation and Component/Subsystem Production Release phase shown in Figure 1 include product validation
and component/subsystem production release. Component/Subsystem validation re-confirmation of all
Electromagnetic Compatibility technical requirements contained in the Component/Subsystem Technical
Specification shall occur during vehicle level validation.
The component/subsystem shall pass both the component/subsystem level electromagnetic compatibility
test(s) and the vehicle level electromagnetic compatibility test(s). In the event that the component/subsystem
passes the component/subsystem level electromagnetic compatibility test(s) but does not pass the vehicle
level electromagnetic compatibility test(s), the vehicle level test results shall be the determining factor for
validation test pass/fail status.
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
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GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 4 of 42
Define EMC
Test Plan
Perform
'Detailed' Design
Review
Design and Build
'Design Iteration
n'
Test 'Design
Iteration n'
Review Test
Results
Is the Data
Compliant to
GMW3097?
No
Release 'Design
Iteration n' Part
Supplier
Supplier
Supplier
Process Step Primary Responsibility
Design, Build and
Validate 'Design
Iteration'
Note: n = number of
iterations =
1,2,3,4,.....
Validate Vehicle
Vehicle Platform
Review Validation
Results
Vehicle Platform
Pass Vehicle
Test?
Product
Validation?
*see Glossary
Vehicle Platform
Vehicle Validation and
Production Release
Yes; end of EMC, continue to ....
Production Part Approval Process & Production Release
End
Review / Approve
EMC Test Plan
Supplier
Is Design
Review
Required/
Necessary?Yes
No
EMC Design Review Team
EMC Design Review Team
EMC Design Review Team
EMC Design Review Team
EMC Design Review Team
EMC Design Review Team
GM Responsible Engineer
GM Responsible Engineer
Supplier
selected
$ $ $
Worldwide Purchasing
Yes
Yes
No
No
No
Figure 1: Design, Build, and Validate Design Iteration/Vehicle Validation
and Component/Subsystem Production Release
4 Validation
4.1 General. Not applicable.
4.2 Validation Cross Reference Index. Not applicable.
4.3 Supporting Paragraphs. Not applicable.
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
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GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 5 of 42
5 Provisions for Shipping
Not applicable.
6 Notes
6.1 Glossary.
Carryover: The product qualified for a prior program and is exactly the same product being used for the future
program. Modifications, alterations, internal part swaps, hardware and software changes are not considered
carryover and must be validated according to the requirements.
Design Validation (DV): The process of confirming through analysis, demonstrations, inspections, and/or
tests that the product design meets its technical requirements (SSTS, CTS/component drawing) without
including the effects of manufacturing induced variations. Variation will exist in the parts on test, but not
representative of the variation from the production process. Design Validation must be complete according to
the Program Schedule of Engineering Deliverables section of the Statement of Requirements (SOR).
EMC Design Review Team: The EMC Design Review Team should include as a minimum, the vehicle
manufacturer Responsible Engineer with release authority over the product, one or more vehicle manufacturer
EMC Engineers, the supplier's EMC expert and members of the supplier's project team directly involved with
the design, development and validation of the product.
IHS Inc.: IHS Incorporated, General Motors' Engineering Standards distributor.
Product Validation (PV): The process of confirming through analysis, demonstrations, inspections and/or
tests that the product design meets its technical requirements (VTS, SSTS, CTS/component drawing) when
including the effects of manufacturing variation. To complete this validation in time to affect pilot, this variation
should be simulated in pre-production hardware or analyses, or by exception, with product hardware produced
from production tools/equipment.
Shall: Denotes a binding provision; a must.
Should: Denotes preferences when specifying alternatives or desired conformance with objectives, standards,
etc.
GM Design/Release-Responsible Engineer: Individual with release authority over the product.
Via: A plated thru-hole on a printed circuit board to route a signal between layers.
6.2 Acronyms, Abbreviations, and Symbols.
Wavelength
+ Positive
- Negative
A/D Analog to Digital
AC Alternating Current
ACCY Accessory (Power Mode)
ALSE Absorber Lined Shielded Enclosure
AM Amplitude Modulation
AN Artificial Network
B+ Battery (Voltage)
BCI Bulk Current Injection
BER Bit Error Rate
BM Brush Commutated Electric Motor
C Capacitance
C Capacitor
C Propagation Velocity of Electromagnetic Wave
CAN Controller Area Network
CE Conducted Emissions
CEMENT Component EMC and Environmental Test (Database)
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
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GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 6 of 42
CI Conducted Immunity
CTE Conducted Transient Emissions
CTS Component Technical Specification
DC Direct Current
dI/dt Change in Current (I) with respect to Time
DUT Device Under Test
DV Design Validation
dV/dt Change in Voltage (V) with respect to Time
EEPROM Electrically Erasable Programmable Read-Only Memory
EICD Electrical Interface Control Document
EMC Electromagnetic Compatibility
ESD Electrostatic Discharge
ESR Effective Series Resistance
fc Cutoff Frequency
FET Field Effect Transistor
GDM Global Document Management
GM General Motors
GMNA General Motors North America
GND Ground
GPS Global Positioning System
GSSLT Global Subsystem Leadership Team
HBM Human Body Model
HS High Speed
HS-CAN High Speed Controller Area Network
HV High Voltage
HVAC Heating Ventilation Air Conditioning
I Current
I/O Input/Output
IC Integrated Circuit
ID Identification
IEC International Electrotechnical Commission
IGN Ignition (Power Mode)
ISO International Organization for Standardization
ITDC International Technical Development Center
L Inductance
LED Light-Emitting Diode
LF Low Frequency
LIN Local Interconnect Network
LS Low Speed
LS-CAN Low Speed Controller Area Network
[m] Largest Dimension of Any Discontinuity
MOV Metal Oxide Varistor
n Number (of Iterations)
N/A Not Applicable
NTC Negative Temperature Coefficient
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
--``,`,,```,,`,,`,,`,,```,,`-`-`,,`,,`,`,,`---
GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 7 of 42
PCB Printed Circuit Board
PDF Portable Document Format
PEPS Passive Entry Passive Start
PID Parameter Identifier
PLL Phase Locked Loop
PPAP Production Part Approval Process
PPEI Platform Powertrain Electrical Interface
PTC Positive Temperature Coefficient
PV Production Validation
PWM Pulse Width Modulated
R Resistance
R Resistor
RAM Random Access Memory
RE Radiated Emissions
RESS Reserve Energy Storage System
RF Radio Frequency
RI Radiated Immunity
RKE Remote Keyless Entry
RUN Run (Power Mode)
SAE SAE International
SDM Sensing and Diagnostic Module
SMD Surface Mounted Device
SOR Statement of Requirements
SSTS Subsystem Technical Specification
Sw B+ Switched Battery (Voltage)
TPIM Traction Power Inverter Module
TPMS Tire Pressure Monitoring System
µP Microprocessor
V Voltage
VCC (Integrated Circuit Power Supply)
VDDA (Integrated Circuit Power Supply) A
Vref Reference Voltage
VTS Vehicle Technical Specification
WVDC Working Voltage DC
XTAL Crystal
7 Additional Paragraphs
7.1 All parts or systems supplied to this standard must comply with the requirements of GMW3059, Restricted
and Reportable Substances for Parts.
8 Coding System
This standard shall be referenced in other documents, drawings, etc., as follows:
GMW3103
Copyright General Motors Company
Provided by IHS under license with General Motors Company Sold to:IHS Standards Store Purchase, 768210
Not for Resale,08/03/2012 23:06:31 MDTNo reproduction or networking permitted without license from IHS
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GM WORLDWIDE ENGINEERING STANDARDS GMW3103
© Copyright 2012 General Motors Company All Rights Reserved
April 2012 Page 8 of 42
9 Release and Revisions
This standard was originated in May 1998. It was first approved by the GM Global EMC Committee in January
2000. It was first published in June 2000.
Issue Publication Date Description (Organization)
1 JUN 2000 Initial publication.
2 OCT 2000 Reworked (ITDC)
3 AUG 2001
Reworked. List of tests matched to GMW3091, GMW3094,
GMW3097, and GMW3100. More detailed appendices for design
review and test plan. Editorial changes. (ITDC)
4 DEC 2003
Reworked. Consolidated appropriate material from GMW3106
(eliminated) into this document, removed Suppliers Questionnaire,
moved Appendix "A" into body requirements section, renumbered
remaining appendices, modified motor filtering in Lessons Learned
appendix, more detailed appendices for design review and test
plan. Editorial changes. (GMNA and ITDC)
5 FEB 2004 Editorial revision, typographical errors corrected.
6 JUL 2006
Minor technical changes (addition of GM Approval Number
requirement, addition of EMC Design Requirements Checklist in
Table A2.2, PWM slew rate recommendations, motor CE transient
suppression). Coordinated release with GMW309
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