Thread: RRC Airbag system, Who knows how it works?

On my mate's soft dash LSE the crash sensor is screwed to the passenger side battery tray next to the radiator. We had to move it a little bit (bent the tray edge) to get a second battery in there. I doubt if it has anything to do with the ABS.

G`day ,

other than the rotary coupler ( cruise , etc )under the steering wheel it`s a unit by its self , no abs , traction ETC .

It has seperate looms that join and can be replaced individually .

It uses 2 srs warning globes in the instruments , they are side by side within a quarter inch and seem as one . One to do the blink check and the other to stay solid if a fault is found .

It has sensors on each side battery tray but they won`t fire the bags alone the ecu also has to agree so it needs at least one sensor and the ecu to fire the bags .

I forget the angles/degrees but it only works in a range between around 11 oclock and 1 oclock so the impact has to almost be square on for the bags to fire .

To my knowing it uses deceleration rather than impact to judge if it should fire the bags .

The Soft dash and Disco 1 that uses 2 bags are the same things , the early P38a other than the actual bags ( different shape ) are the same thing .

Originally Posted by PLR

G`day ,

other than the rotary coupler ( cruise , etc )under the steering wheel it`s a unit by its self , no abs , traction ETC .

It has seperate looms that join and can be replaced individually .

It uses 2 srs warning globes in the instruments , they are side by side within a quarter inch and seem as one . One to do the blink check and the other to stay solid if a fault is found .

It has sensors on each side battery tray but they won`t fire the bags alone the ecu also has to agree so it needs at least one sensor and the ecu to fire the bags .

I forget the angles/degrees but it only works in a range between around 11 oclock and 1 oclock so the impact has to almost be square on for the bags to fire .

To my knowing it uses deceleration rather than impact to judge if it should fire the bags .

The Soft dash and Disco 1 that uses 2 bags are the same things , the early P38a other than the actual bags ( different shape ) are the same thing .

Great info

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I suppose it's technically possible, but I suspect you would need to replace the dashboard, crush cans and all other bits from the updated airbag model. For example, retrofitting the LSE softdash bits into the LSE harddash.

But I see two problems. Firstly, I wonder whether this would violate any roadworthy legislation and open you up to personal liability if one of your passengers was injured by a faulty bag discharging accidentally or a non-functioning airbag in the event of a crash.

Secondly, I understand that all airbags are supposed to be replaced every ten years. I don't think it's ever been mandated, but I think its what all airbag manufacturers and vehicle manufacturers maintain. Mind you, it could be just for legal reasons and I could be wrong.
But if that's correct, it would mean you are using a part which will already be a decade and a half outside its useful life.

All modern air bag systems also use an input from the speed sensor so they dont activate at too low a speed allowing for slow speed impacts or "bumps" to the front. Usually they wont activate below 30kmh vehicle forward motion. However if it senses a higher impact speed ie; a rapid deceleration, (another vehicular impact) they will deploy if the ignition is on.

Cheers Rod

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Originally Posted by 67hardtop

All modern air bag systems also use an input from the speed sensor so they dont activate at too low a speed allowing for slow speed impacts or "bumps" to the front. Usually they wont activate below 30kmh vehicle forward motion. However if it senses a higher impact speed ie; a rapid deceleration, (another vehicular impact) they will deploy if the ignition is on.

Cheers Rod

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Does this apply to RRC or just modern systems?
How does the soft dash crush can fit into all this?

Dont know about rrc system. Just general knowlege and training i remember from GM H training at Elizabeth. I was foreman at Smith Motor Co. at the time. I also remember that the Toyota Camry/Apollo air bag systems were mostly mechanical and not too much electronics at that time (up to 2002). I studied the electronics systems in Holdens fairly extensively at the time, coz i was foreman i had to direct others in electronic diagnostics. Sorry i cant assist there so much. Just giving u some generalised help.

Cheers Rod

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Originally Posted by DieselLSE

I suppose it's technically possible, but I suspect you would need to replace the dashboard, crush cans and all other bits from the updated airbag model. For example, retrofitting the LSE softdash bits into the LSE harddash.

But I see two problems. Firstly, I wonder whether this would violate any roadworthy legislation and open you up to personal liability if one of your passengers was injured by a faulty bag discharging accidentally or a non-functioning airbag in the event of a crash.

Secondly, I understand that all airbags are supposed to be replaced every ten years. I don't think it's ever been mandated, but I think its what all airbag manufacturers and vehicle manufacturers maintain. Mind you, it could be just for legal reasons and I could be wrong.
But if that's correct, it would mean you are using a part which will already be a decade and a half outside its useful life.

The soft dash into hard dash is not the issue as its been done.

If it was to happen it would be engineered negating any liability

Also it would be done with new replacement parts (bags and loom you would use if you had to replace after an accident)