Black Box

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Jan 4, 2006 | 08:53 PM

#31

SpartanDieselTech

Former Vendor

Joined: Mar 2004

Posts: 4,362

Likes: 3

From: Hendersonville, NC

Quote:

Originally Posted by Beachbumcook

If it can be changed or manipulated.... how does one go about it? Does it record all the time and copy over the old data (like a flight safety "black box")? Or does it just record when a given set of "emergency parameters" are triggered? Either way... how can it be erased or manipulated?

Thanks,

The logging is triggered internally, and the information is saved on the crash module processor and transferred over ISO bus to the PCM for backup. It will save about 10 freezeframes, so ~ .5 seconds of data is stored. Erasing the information without simply destroying both boxes involves locating the data on-module over the 9141 network with a hardware interface (such as a CarDAQ from Drewtech or a Gryphon from DGTech.) The information which is backed up in the PCM can simply be cleared by flash erase and loss of VREF power.

There is one method of modifying the circuit internally (I discovered this after this thread got me interested) to self-erase upon trigger of the inertial sensor, thereby preventing any data storage, but the details are something I don't feel comfortable posting on a publically viewable forum.

Last edited by PSD 60L Fx4; Jan 4, 2006 at 08:56 PM.

Jan 4, 2006 | 09:17 PM

#32

kw5413

Post Fiend

Joined: Apr 2004

Posts: 19,098

Likes: 8

From: Great State of Texas

....what'd he say?

Kids these days.

Jan 5, 2006 | 08:17 AM

#33

Beachbumcook

Got Diesel?

Joined: Jan 2004

Posts: 4,345

Likes: 21

I understand it fully.....

What Matt is saying is that the common person can not change, adapt or modify the "black box" that is inlcuded in our trucks. Unless one is a Ford engineer or someone like Matt that "really understands this stuff"... we all just have to live with it.....

That's how I understaood his post.

Thanks Matt.

Jeff

Jan 5, 2006 | 09:41 AM

#34

juniorf350

Senior User

Joined: Sep 2004

Posts: 250

Likes: 0

From: cottage grove,mn

Quote:

Originally Posted by kw5413

....what'd he say?

Kids these days.

silly us

Jan 5, 2006 | 10:26 AM

#35

alchymist

"Mifflin Clay"

Joined: Jul 2005

Posts: 3,177

Likes: 4

From: Mifflin, PA

Quote:

Originally Posted by Beachbumcook

Not really - if the "common person" happens to have some electronic or computer experience, and is willing to spend some money, all things are possible .......................

Jan 5, 2006 | 01:57 PM

#36

Beachbumcook

Got Diesel?

Joined: Jan 2004

Posts: 4,345

Likes: 21

Quote:

Originally Posted by alchymist

Not really - if the "common person" happens to have some electronic or computer experience, and is willing to spend some money, all things are possible .......................

OK, I stand corrected...