I'm working on a '04 Accord 4dr at the dealer. The customer was driving down the highway, runs over a large block of some kind of metal. The left side (only) curtain airbag, the drivers side airbag deployed, and the seat belt tensioner deployed.
There is no large amount of damage (I'll post pictures tomorrow on a faster connection). Absolutely no body panel damage. The only visible damage is in the left front wheel well, and on the frame just infront of the left rear wheel. And those spots are too small to even require a trip to the body shop.
The questions are.
1. Why did those airbags deploy?
2. What sensor's determined that outcome?
3. Why didn't the other airbags deploy? (both front airbags, right side curtian and side airbag)

Let's see who get's it right first.








Modified by MooGoCow3 at 5:24 PM 11/15/2005


Modified by MooGoCow3 at 5:25 PM 11/15/2005


Modified by MooGoCow3 at 5:30 PM 11/15/2005

 

1. Guessing (just a guess ) the newer models "know" when there is only one person in the car. Probably because only that seatbelt was fastened. Why deploy every airbag in the vehicle if the driver is the only one there???
2. Don't have the faintest
3. Explained up top

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MooGoCow3 &raquo;</TD></TR><TR><TD CLASS="quote">
1. Why did those airbags deploy?
2. What sensor's determined that outcome?
3. Why didn't the other airbags deploy? (both front airbags, right side curtian and side airbag)

</TD></TR></TABLE>
1. Because the srs control unit told them to.
2. The left side impact sensor tripped.
3. Because the srs control unit didn't think they needed to.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vt4cPwn35 &raquo;</TD></TR><TR><TD CLASS="quote">1. Guessing (just a guess ) the newer models "know" when there is only one person in the car. Probably because only that seatbelt was fastened. Why deploy every airbag in the vehicle if the driver is the only one there???
2. Don't have the faintest
3. Explained up top</TD></TR></TABLE>

#1 is partially correct. All Honda's equipped with side airbags are also equipped with a passenger front seat OPDS (occupant position detection sensor). Which senses passenger weight, height and how the person is sitting in the seat (leaning on the door, slouching, or sitting upright). However that doesn't have much of a bearing on this "accident". The airbags would have still deployed regardless of the drivers seatbelt being buckled. The only one that would have not deployed might have been the drivers side airbag. Great guess though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chiovnidca &raquo;</TD></TR><TR><TD CLASS="quote">1. Because the srs control unit told them to.
2. The left side impact sensor tripped.
3. Because the srs control unit didn't think they needed to.</TD></TR></TABLE>

#2 is partially correct too. But it takes more than one SRS sensor to trigger a deployment.
#3 and #1 is obviousally partial but i'm looking for why

 

I ******* hate tests... that's why I joined the military

 

You know what though, on second thought, this is the most intriguing (sp?) post I've seen in a long time.... you may be on to something here

If you get anything else interesting in the shop post it up here, I love learning new ish.

 

When the driver hit the obstical, the computer sensed that the vehicle slowed down abruptly thereby triggering the deceleration sensor and perhaps it even bounced the car over to the left hard enough to make the side impact sensor trip. Just my thought.

 

Lateral Acceleration (Side/Side) was above limit. As opposed to Longitudinal Acceleration (Front/Rear)
With the onset of side curtain airbags, you've now sensors who read side accelerations as well as those from the front

P

 

even though the vehicle didn't slow down but the speed sensor might have thought it did? I wasn't clear on what I mean above.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">Lateral Acceleration (Side/Side) was above limit. As opposed to Longitudinal Acceleration (Front/Rear)
With the onset of side curtain airbags, you've now sensors who read side accelerations as well as those from the front

P</TD></TR></TABLE>

Had this been an actual accident yes. But in this case the answer is really no. The pictures i'll post will prove it. Think of where the sensors are located and that this is a one in a million.

To answer you briq4. The vehicle speed sensor wasn't the main input for this. There are other lateral and longitudinal (g-force) sensors throughout the vehicle. Those would determine the force of an impact. The speed sensor wouldn't be a primary input because normally when you hit something like a tree or wall the wheels keep spinning for an instant just because of rolling mass. And that would cause a delayed response for the airbag.


Modified by MooGoCow3 at 3:36 AM 11/15/2005

 

Take a look and see what you think now

 

Hit the ol' parking lot curb stone? Didn't we?

 

As honest as customers can be you may be right.

 

Another peice of trivia if you so desire.
Lets see how well you know your hondas.
What trim level and engine is this car?

 

EX - L 4 cylinder?

 

I notice too that it actually says Curtain Airbag on the airbag, that's good so after an accident you know what is sitting next to you.

 

Your right.
Yea I noticed that too. Before it deploys the whole thing is covered with that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vt4cPwn35 &raquo;</TD></TR><TR><TD CLASS="quote">I ******* hate tests... that's why I joined the military </TD></TR></TABLE>

Dito. All I have to say is FCUKIN OUCH!! that had to hurt...

 

I was surprised not to find any crap stains on the seat. I know there would been a few if it were me. No nevermind, if I saw something that big in the road I would swerve to miss it.

 

Well.... i just that as the guy said... newer accords "know" what, how and when to deploy air bags.... nice thread!.. very interesting!!!

 

03 EX I4

 

Man I learned something today, I must slowdown on speed bump....haahh . I don't like air bag.

Thanks for posting this, good information


ujhonda

 

OT:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vt4cPwn35 &raquo;</TD></TR><TR><TD CLASS="quote">You know what though, on second thought, this is the most intriguing (sp?) post I've seen in a long time.... you may be on to something here

If you get anything else interesting in the shop post it up here, I love learning new ish.</TD></TR></TABLE>


what does (sp) mean? i sometimes see it.. but i dont know what it means..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dj14aZnS &raquo;</TD></TR><TR><TD CLASS="quote">...what does (sp) mean?...</TD></TR></TABLE>

It is to notate that the word could be spelled incorrectly, but the posting member is too lazy to put forth the effort to correct it, or find the correct spelling, and that one or more of the following is true about the poster...

a. they are using a government computer which doesn't allow scripts such as the spellcheck function.
b. they are using a school computer which doesn't allow scripts like those mentioned above.
c. they don't give a damn.

Which ever of these applies to the posting member, the one thing that remains constant is that it's too much work to look up trivial spelling of a word on Dictionary.com, when you can anotate with a simple (sp).

Now this is by no means an excuse for the illiterate bastrds out there to post completely illegable comments, expecting the rest of us to understand that you were just too lazy. The fact remains, you're still illiterate.