A Black Box.
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Joined: May 2005
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There are two types of event data recorders... one has been in cars since airbags were introduced... it records speed, inertia, brake use, belt status, timing of deployment etc - and only holds the last 15 minutes or so of data. This is used for crash analysis - and has been subpeanad (sp?) in the past. Then there is the ECU which can be programmed to track that stuff and the dealership can read into. I don't know what is in that dataset, but I imagine it's quite eye opening. Now it may also be that both functions are rolled up into the same ECU - so what we REALLY need to know is what the data size in the ECU is - go racing one weekend, then drive normally for 3 days to flush out the buffer, so to speak.
Cheers
Cheers
Registered User
Joined: Oct 2003
Posts: 884
Likes: 3
From: Virginia
According to page 9-23 of the 2004.5 owner's manual:
EVENT DATA RECORDERS
Your vehicle is equipped with a variety of
computers that monitor and control a number
of systems to optimize performance and help
service technicians with diagnosis and repair.
Depending on the equipment on your vehicle,
some of the computers monitor emission control
systems, braking systems and air bag
systems, just to name a few. Some data about
vehicle operation may be stored in the computers
for use during servicing. Other data
may be stored if a crash event occurs. For
example, air bag readiness, air bag performance,
and seat belt use by the driver or
passenger may be recorded, depending on
vehicle equipment. These types of systems
are sometimes called Event Data Recorders.
Special equipment can be used to access the
electornic data that may be stored in the
vehicle’s computers (sounds are not recorded).
INFINITI and dealers have equipment
to access some of this data; others may also
have this equipment. The data may be retrieved
during routine vehicle servicing or for
special research. It might also be accessed
with the consent of the vehicle owner or lessee,
in response to a request by law enforcement,
or as otherwise required or permitted by
law.
EVENT DATA RECORDERS
Your vehicle is equipped with a variety of
computers that monitor and control a number
of systems to optimize performance and help
service technicians with diagnosis and repair.
Depending on the equipment on your vehicle,
some of the computers monitor emission control
systems, braking systems and air bag
systems, just to name a few. Some data about
vehicle operation may be stored in the computers
for use during servicing. Other data
may be stored if a crash event occurs. For
example, air bag readiness, air bag performance,
and seat belt use by the driver or
passenger may be recorded, depending on
vehicle equipment. These types of systems
are sometimes called Event Data Recorders.
Special equipment can be used to access the
electornic data that may be stored in the
vehicle’s computers (sounds are not recorded).
INFINITI and dealers have equipment
to access some of this data; others may also
have this equipment. The data may be retrieved
during routine vehicle servicing or for
special research. It might also be accessed
with the consent of the vehicle owner or lessee,
in response to a request by law enforcement,
or as otherwise required or permitted by
law.
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