Restraints Module tech... - Ranger-Forums - The Ultimate Ford Ranger Resource


General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-18-2008
zabeard's Avatar
who?
Thread Starter
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
Restraints Module tech...

Restraints Module, if I unplug it will it disable my air bags? I got to thinking about this and my style of wheeling lately. I really dont want them to go off. I want them shut off.

If there is another way around it let me know. Also any other side effects from turning this off? Like how the seat belts lock? etc.


I dont really want to hear why I shouldnt do it. thanks.
Reply With Quote
  #2  
Old 07-18-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
Nice Zach! A thread I needed to make but havn't yet. Thanks man.

Shane






Is there a way to make a "master override" switch to kill the driver side bag and belt lock system?
Reply With Quote
  #3  
Old 07-18-2008
zabeard's Avatar
who?
Thread Starter
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
See I still want the belt lock for a while. Atleast until I have 5 point harness. A seat belt would be kinda useless if it ddint lock.
Reply With Quote
  #4  
Old 07-18-2008
RazorsEDGE's Avatar
There's no lifeguard in the gene pool
iTrader: (4)
 
Join Date: Aug 2006
Location: New Mexico
Posts: 7,501
It will shut down the airbag system. Your airbag light will come on and blink no trouble code, itll just be on. As for the seat belt lock I dunno. Unplug the module and go for a short drive to find out....
Reply With Quote
  #5  
Old 07-18-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
ohhh...i was talkin' the pretensioner when i turn off the bag...for it to also turn off the engaging of the pretensioner.
Reply With Quote
  #6  
Old 07-18-2008
zabeard's Avatar
who?
Thread Starter
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
Quote:
Originally Posted by RazorsEDGE View Post
It will shut down the airbag system. Your airbag light will come on and blink no trouble code, itll just be on. As for the seat belt lock I dunno. Unplug the module and go for a short drive to find out....
my mission is to make all the lights on the cluster just be on.

good point i will give it a try.
Reply With Quote
  #7  
Old 07-18-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
The pre-tensioner and airbags are different than the lock.

The lock you're refering to is the latching device that stops the belt from extending when you slow down or stop. That is a mechanical device activated simply by forward momentum. There is nothing electronic about it and you would have to tear apart the belt retractor to disable it. Like you said, it would kinda defeat the purpose of having the seatbelt at all.

The pre-tensioner is a device that pulls the slack out of the seatbelt. They will instantly yank about 6-8" of seatbelt into the retractor, taking up slack and keeping you from flopping forward. It is a pyrotechnic device that is fired electrically just like the airbags. They are fired at the same time as the airbags. If disconnecting that restraint module disables the airbag, it will also disable the pretensioner.
Reply With Quote
  #8  
Old 07-18-2008
zabeard's Avatar
who?
Thread Starter
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
Quote:
Originally Posted by FireRanger View Post
The pre-tensioner and airbags are different than the lock.

The lock you're refering to is the latching device that stops the belt from extending when you slow down or stop. That is a mechanical device activated simply by forward momentum. There is nothing electronic about it and you would have to tear apart the belt retractor to disable it. Like you said, it would kinda defeat the purpose of having the seatbelt at all.

The pre-tensioner is a device that pulls the slack out of the seatbelt. They will instantly yank about 6-8" of seatbelt into the retractor, taking up slack and keeping you from flopping forward. It is a pyrotechnic device that is fired electrically just like the airbags. They are fired at the same time as the airbags. If disconnecting that restraint module disables the airbag, it will also disable the pretensioner.
but if the pretensioner is disabled and if i were to get in a wreck it would just be like a car/truck with no air bags correct? thanks for the explanation
Reply With Quote
  #9  
Old 07-18-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Correct. It will LOCK but will not fire and retract.
Reply With Quote
  #10  
Old 07-19-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
so just disconnect the module? or disconnect the pretensioner plug? sorta confused right now.
Reply With Quote
  #11  
Old 07-19-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Well obviously disconnecting the device itself will disable it. But they are talking about disconnecting the module.
Reply With Quote
  #12  
Old 07-19-2008
Goodysgotacuda's Avatar
Member
iTrader: (1)
 
Join Date: Jul 2008
Location: Las Vegas, NV
Posts: 1,496
If it was me, i would not put ANYTHING out the output side of the air bag control module, including the actual crash senssors. I would look more twords which fuse runs the srs and put a toggle on that, and only toggle it with the key off. Anytime the SRS light is illuminated you've sucessfully disabled the entire SRS system. It will not deploy anything with a fault. Reason I wouldn't mess with the output side is of accidental ignition of something, takes very little power to light up one of those things.

I am thinking about doing the same for my ABS, i hate having ABS off road.
Reply With Quote
  #13  
Old 07-19-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Disconnecting the power to the restraint module does NOT immediately disable the air bags. They have a capacitors in them that will keep them armed even after power is disconnected. This drain time varies by make/model from 10 seconds to up to 10 minutes. I have no idea what the drain time is for a Ford Ranger but it is not instant.
Reply With Quote
  #14  
Old 07-19-2008
Goodysgotacuda's Avatar
Member
iTrader: (1)
 
Join Date: Jul 2008
Location: Las Vegas, NV
Posts: 1,496
Right, but as long as the light is on, there will be no request from the module (if you pull the fuse) for it to fire the squib. You go around and jump the airbag to a ground, and its probably gonna bite you. I dont think he is worried about an accidental airbag deployment, but from an intentional one from the module due to the off road conditions. They can have capacitors all day long, but if they are just sitting there with no module to talk to, and nobody in the door/column fiddling with them, they're not going to pop. in my opinion
Reply With Quote
  #15  
Old 07-19-2008
zabeard's Avatar
who?
Thread Starter
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
Quote:
Originally Posted by Goodysgotacuda View Post
If it was me, i would not put ANYTHING out the output side of the air bag control module, including the actual crash senssors. I would look more twords which fuse runs the srs and put a toggle on that, and only toggle it with the key off. Anytime the SRS light is illuminated you've sucessfully disabled the entire SRS system. It will not deploy anything with a fault. Reason I wouldn't mess with the output side is of accidental ignition of something, takes very little power to light up one of those things.

I am thinking about doing the same for my ABS, i hate having ABS off road.
been there tried it. i need wipers when wheeling and they are on the same circuit.
Reply With Quote
  #16  
Old 07-19-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
I want to stress over and over that the SRS systems were not designed for people to mess with them, modify things, unplugs, rewire, etc etc. If you **** the system off
A- It might not work when you actually need it.
B- It might deploy when you least expect it.

Make these modifications and changes at your own risk regardless of what I or anyone else here on R-F have said or suggested.
Reply With Quote
  #17  
Old 07-19-2008
zabeard's Avatar
who?
Thread Starter
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
Quote:
Originally Posted by FireRanger View Post
I want to stress over and over that the SRS systems were not designed for people to mess with them, modify things, unplugs, rewire, etc etc. If you **** the system off
A- It might not work when you actually need it.
B- It might deploy when you least expect it.

Make these modifications and changes at your own risk regardless of what I or anyone else here on R-F have said or suggested.
I agree. My truck isnt driven much anymore. 10 miles a week? if that. So i justify it. As easy as it is to take off I will probably have it plugged in most times unless I am wheeling it.


BTW the plug fell out of the restraints module today.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
airbag control module or restraint control module? lsf53 General Technical & Electrical 2 06-02-2010 05:30 PM
Restraints control module relocation? RazorsEDGE General Technical & Electrical 18 01-18-2009 01:09 PM
Chassis Tech? MudShark Suspension Tech 8 10-21-2004 11:54 PM
Product Review: Meguair's NXT Generation Tech Wax Mnemonic Ranger Products, Company, & Member Reviews 6 09-21-2004 07:30 AM
tech articles thelowranger Ranger-Forums Office 5 06-29-2004 10:08 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 03:06 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.