GM GMW3097 (General Specification for Electrical/Electronic Components and Subsystems, Electromagnetic Compatibility) specifies the EMC requirements for all automotive products when evaluated by specified test procedures. It refers to International EMC standards whenever possible, occasionally including internet test procedures when necessary.
Validation testing in accordance with GM GMW3097 must be performed at a laboratory that has received recognition through the Automotive EMC Laboratory Recognition Program (AEMCLRP).
For GM GMW3097, A minimum of two samples shall be tested. The supply voltage shall be 13.5 (+0.5/-1) V unless otherwise stated in the test plan.
The DUT (Device Under Test) shall pass both the component level tests according to this specification and the vehicle level tests according to GMW3091. Component tests are not intended to take the place of vehicle tests. The exact correlation between component and vehicle test performance is dependent on component mounting location, harness length, routing, and grounding, as well as the antenna system. Component testing, however, permits components to be evaluated before actual vehicle availability.
Before testing, any deviations from the requirements and/or test procedures shall have been agreed with the GM EMC Engineer responsible for approving the test plan. Such deviations shall be detailed in the approved test plan and on component drawings, test certificates, reports, etc.
Note: All EMC test results that are intended for validation purposes must be accompanied by a GMW3103 EMC Test Plan (complete with an approval number supplied by the GM EMC Engineer or by the CEMENT database process).
Note: Any EMC development test results that are provided to GM (e.g., test results that have been taken before the EMC test plan approval, or results of limited testing due to root cause analysis or Pre-DV evaluation work) must be marked “Development Data – Not For Validation”.
Note: Pyrotechnic devices containing igniters, such as airbag initiators, seat-belt pre-tensioners, etc., are exempt from the EMC requirements as detailed in this specification. They are subject to the EMC requirements as detailed in SAE/USCAR-28.
Note: For those devices, such as the On-Board Charging Module (OBCM) or off-board chargers, which are directly connected to the Alternating Current (AC) or Direct Current (DC) power mains while charging an electric/hybrid vehicle, additional and unique EMC requirements shall be imposed so that the vehicle is compliant with the newer release of ECE Regulation 10 about plug-in vehicles. Some of these requirements are similar to those found in SAE J1772 pertaining to electric and hybrid conductive charge couplers. These additional requirements shall be captured in the specific CTS for those devices and are outside the scope of this document at this time.
