Just wondering if the "black box" in news articles is the same as our ECU.
All modern automobiles manufactured after 1996 (If I remember the year right) that has an air bag has a “black box” of one design or another. The question has always been whether it is accessible or able to be downloaded by anyone other than the manufacturer. The “black box” is different from your ECU (Engine Control Unit) but it is tied to it.
A crash or air bag deployment typically triggers the EDR (Event Data recorder), which collects data in the seconds pre-crash, during and post-crash. Bosch Diagnostic is the most widely used CDR (Crash Data Retrieval tool) that can download via the OBDII DLC or directly into the air bag module. The EDR, PCM (Powertrain Control Module) or ACM (airbag control module) can be downloaded via model specific cables whether it is still in the vehicle or removed should the power or connectivity to the OBDII be compromised during a crash. They do require external power if removed for a download.
Many manufacturers previously would not allow downloads for proprietary reasons. However, a recent NHTSA 46-10 ruling has mandated that all manufacturers selling automobiles in the US must comply with allowing access to their “black box” data by 2014. This ruling is to assist with post-crash analysis to determine the cause of a crash and eventually make the roads and vehicles safer.
Examples of some of the information recorded include:
vehicle speed;
whether the brake was activated in the moments before a crash;
crash forces at the moment of impact;
information about the state of the engine throttle;
air bag deployment timing and air bag readiness prior to the crash; and
whether the vehicle occupant's seat belt was buckled.
CDR systems became available to the public in 2000.
Originally, downloads were not supported for most manufacturers except for in house analysis. Some manufacturers though, like Ford (since 2004) and GM (since 1994), have been on board for years. Others, like Honda and Toyota, just became available recently. Some downloads will store up to 25 seconds pre-crash (Ford’s PCM). Most will continue to record 5 seconds post-crash.
Currently, legal requirements for downloads vary state by state and sometimes county by county. One state may allow a post-crash download as part of a basic, post-crash vehicle inspection. Others require owner consent or even a search warrant. Either way, they are widely recognized and acceptable in both criminal and civil courts.
Bosch currently does not have Lotus specific ACM cables or Lotus specific software for a download via the OBDII available at this time.