Crashed s2k What all needs changed?
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Crashed s2k What all needs changed?
Hello, I recently had a little front end collision and the airbags deployed. I have read that changing the srs unit will fix the crash data issue. I’ve changed that and checked the voltage on the yellow wire that goes to the seatbelt retractors as well as the airbag connector and still get the same reading of 4.5 volts on both. I’m not 100% on what the voltage is supposed to be but I’m pretty sure that 4.5 volts would deploy an airbag. This is the only thing left to having my car back and I’m stumped. My main question is, will the seat belts lock up with the 4.5 volts running to them as well as the airbag deploying? Any input is appreciated I’m new to the whole crashed car thing and srs system.
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Thanks for responding Billman. I have changed the srs module and have gotten seatbelts and airbag I’m just curious as to if the airbag is going to explode with the 4.5 volts that’s running through the connector to the airbag. If not, what is the voltage for? If you can’t answer because of safety reasons, I understand.
Thanks again.
Thanks again.
Joined: Feb 2017
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From: Ohio
I don't know this for a fact, but if I had to guess the voltage could be used to detect if the airbag is present. Its gotta check for it electrically somehow. Got a beater honda around? You could disconnect the airbag from it and test the same way.
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Thanks for the response Mikey. That would make sense that it had to have a way for the srs light to come on and it might take a little long for the airbag to get the voltage to needs to explode so it’s already stored there. I have an aftermarket steering wheel so the light is already on or that would be the sure fire way to tell. I’ll test this. Thanks again for all the input.
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From: Foothills East of Sacramento
I have worked on airbag modules several times (replacing hard soldered fuses on the circuit board) on another make but they all operate in a similar fashion. There will be current running through the various components upon activation running the "test" mode on start up. If it passes, the airbag light will extinguish a few seconds after start up (or turning the ignition on). The power to deploy the bags comes from a charge generated by capacitors to ensure positive operation.
Capacitors can hold a charge for some time. This is why you should disconnect the battery (usually the negative terminal) for at least 30 minutes before working on the airbag system.
Capacitors can hold a charge for some time. This is why you should disconnect the battery (usually the negative terminal) for at least 30 minutes before working on the airbag system.
