Re: "Black Box" information retention?

Tegger wrote:
> jim beam <spamvortex@[EMAIL PROTECTED]
> wrote in
> news:z7ydneZcFs0v6JbanZ2dnUVZ_sbinZ2d@[EMAIL PROTECTED]
 
> 
>> Tegger wrote:
>>> jim beam <spamvortex@[EMAIL PROTECTED]
> wrote in
>>> news:ArGdnQpQasstnZbanZ2dnUVZ_tHinZ2d@[EMAIL PROTECTED]
 
>>>
>>>
>>>> obd0 = zero
>>>> obd1 = 30 secs
>>>>
>>>> i think obd2 varies depending on year and manufacturer, but the info
>>>> is supposed to be pretty much comprehensive for anything the
>>>> computer controls and covers an extensive period.
>>>>
>>>
>>> The data recorder ("black box") is independent of the ODB system. It 
>>> records stuff like seat belt usage, air bag deployment, car speed and
>>> engine RPM.
>>>
>>> Automakers are beginning to add "black boxes" to their cars as
>>> protection against liability and fraudulent warranty claims.
>>>
>> that's very recent.  prior to that, data recording is done by the ecu.
>>
> 
> 
> I'm not sure the data I list above was ever recorded by the ECU.

the data i listed is though.


> That's why 
> they started installing "black boxes" in the first place.
> 

original reason was a manufacturer legacy of product development and 
testing.  then law enforcement became interested.  the rest is history.