This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Extracting Event Data from Memory Chips within a Detroit Diesel DDEC V
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2015 by SAE International in United States
Annotation ability available
The proper investigation of crashes involving commercial vehicles is critical for fairly assessing liability and damages, if they exist. In addition to traditional physics based approaches, the digital records stored within heavy vehicle electronic control modules (ECMs) are useful in determining the events leading to a crash. Traditional methods of extracting digital data use proprietary diagnostic and maintenance software and require a functioning ECM. However, some crashes induce damage that renders the ECM inoperable, even though it may still contain data. As such, the objective of this research is to examine the digital record in an ECM and understand its meaning. The research was performed on a Detroit Diesel DDEC V engine control module. The data extracted from the flash memory chips include: Last Stop Record, two Hard Brake events, and the Daily Engine Usage Log. The procedure of extracting and reading the memory chips is explained. Details regarding decoding the memory contents to determine meaning are given for the aforementioned datasets. This research revealed higher fidelity data in memory for the Daily Engine Usage Log when compared to the DDEC Reports output. Should an ECM be inoperable, the techniques presented can help investigators extract previously unobtainable information.
|Journal Article||On the Digital Forensics of Heavy Truck Electronic Control Modules|
|Technical Paper||Using NFPA Compliant Fire Apparatus Vehicle Data Recorders for Collision Investigation - Weldon Type 6444|
CitationDaily, J., Kongs, A., Johnson, J., and Corcega, J., "Extracting Event Data from Memory Chips within a Detroit Diesel DDEC V," SAE Technical Paper 2015-01-1450, 2015, https://doi.org/10.4271/2015-01-1450.
- Reust , T. , “The Accuracy of Speed Captured by Commercial Vehicle Event Data Recorders” SAE Technical Paper 2004-01-1199 2004 10.4271/2004-01-1199
- Plant , D. , Austin , T. , and Smith , B. , Data Extraction Methods and their Effects on the Retention of Event Data Contained in the Electronic Control Modules of Detroit Diesel and Mercedes-Benz Engines SAE Int. J. Passeng. Cars - Mech. Syst. 4 1 636 647 2011 10.4271/2011-01-0808
- SAE International Surface Vehicle Recommended Practice Heavy Vehicle Event Data Recorder (HVEDR) Standard - Tier 1 SAE Standard J2827 Jun. 2010
- Detroit Diesel 2014 DDEC Reports http://www.ddcsn.com/cps/rde/xchg/ddcsn/hs/3903.htm
- Messerschmidt , W. , Austin , T. , Smith , B. , Cheek , T. et al. Simulating the Effect of Collision-Related Power Loss on the Event Data Recorders of Heavy Trucks SAE Technical Paper 2010-01-1004 2010 10.4271/2010-01-1004
- Johnson , J. , Daily , J. , and Kongs , A. , On the Digital Forensics of Heavy Truck Electronic Control Modules SAE Int. J. Commer. Veh. 7 1 72 88 2014 10.4271/2014-01-0495
- SAE International Surface Vehicle Recommended Practice Electronic Data Interchange Between Microcomputer Systems in Heavy-Duty Vehicle Applications SAE Standard J1587 Jan. 2007