Technical Paper
Analysis of the Event Data Recorder (EDR) Function of a GM Active Safety Control Module (EOCM3 LC)
2024-04-09
2024-01-2888
The Advanced Driver Assistance System (ADAS) is a comprehensive feature set designed to help a driver avoid or reduce the severity of collisions while operating the vehicle within specified operating conditions. The primary controller for the ADAS in General Motors (GM) vehicles is the Active Safety Control Module (ASCM) . In the 2013 model year, GM introduced an ASCM, in some of its North American vehicles, utilizing the GM internal nomenclature of External Object Calculation Module (EOCM). Similar to the Sensing and Diagnostic Module (SDM) of the restraint system, the EOCM contained a secondary function to record data surrounding certain ADAS or Supplemental Inflatable Restraint (SIR) events. This event data is generated from external object sensors, various chassis and powertrain modules, and internal calculations and includes event date and time, GPS location, vehicle speed, and distance to objects of interest.