DIY: [How-To:] Racing Seat airbag light fix

CJBinder

I am about to tear out my dash to remove the bulb for this air bag. I have tried 4 different types of resistors. Testing on resistor leads on each end not connected and voltmeter on 200 OHM setting(lowest) it reads 5.4-5.5. Was thinking it should be 4.7. Idk. Each time I did the reset trick and this thing never works. I have the weight sensor plugged in from passenger seat and both clips in for airbags with the following resistors.

https://www.parts-express.com/47-ohm...0-pcs--002-4.7

Any ideas?

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DeliriousClam

Took four hours but mine are in and everything is functional including the weight sensor. Don't know maybe I just got lucky

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DeliriousClam

disconnect + on battery and wait 5 minutes to reconnect. Worth a shot

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BeemaaZ

May we know why the positive and not the negative? I always disconnect the negative to reset.

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DeliriousClam

Actually the way I've always done resets is disconnecting both and touching the cables together. ALWAYS reset everything.

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Most of what I post here are artistic works of fiction and falsehood. Only a fool would take anything I post here as fact.

SouthArk370Z

Doesn't matter. No need to wait 5 minutes - just press on the brake pedal for a second or two.

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SouthArk370Z

A direct short like that can cause problems (the capacitors discharge too fast). Pressing on the brake pedal (or placing a fairly high resistance load between the terminals) will limit the amount of current. Granted, it's not a big problem with most modern electronics, but why take a chance?

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CJBinder

So I am going without anything connected. Wish someone could tell me if 5.4 or 5.5 should be reading using voltmeter on 200 ohm setting for these 4.7 ohm resistors non connected.

Anyway does anyone know if I unplug everything(both air bag connectors and weight sensor) if the Service Engine Soon light comes on? All the sudden after removing everything and installing my seats this damn light comes on.

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CJBinder

Any chance you can include a link to where you bought them or can you tell me what voltmeter reading you have on a spare resistor?

If you have extras, maybe you could send me 2?

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Injen cold air intakes, Ported upper and lower manifolds, OS Giken LSD, F1 Long Tube Headers, Magnaflow CBE. Natural Baby

CJBinder

Searching online it says it should show 4.7 not 5.5.

Can someone please post a link to resistors you can buy online that you have used and are working?

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gomer_110

Resistors from Digikey

Always had good luck with stuff from Digikey. I have used them a number of times for R&D projects at work with good success.

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SouthArk370Z

+1 on DigiKey - I've bought quite a bit of stuff from them over the years with no problems.

I've also had good luck getting resistors (and other discrete components) from Radio Shack and local electrical supply houses.

My guess is that you:
1) Got part of a bad batch of resistors. Not very common.
2) Are using a meter that isn't very accurate. Very likely if it is a cheap meter or an old one that has deteriorated. A Q&D check of a meter's zero is to touch the leads together - meter should read 0.0 ohms. If you have one of the better meters, you can adjust the zero.
3) You have a high-resistance connection somewhere in the circuit. If you are using crimp connectors, try putting the meter leads directly on the resistor leads. If the reading drops more than a few tenths, try soldering.

Edit: Make sure the meter leads and the points you are measuring are clean. Oxides will raise the total resistance. Some fine sandpaper, steel wool, edge of a knife, etc will knock the oxide and any other crud off.

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DeliriousClam

I bought 100. PM me your address and I'll ship you some

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Stillen, AAM, Shine Auto, Fujimora, Swift, EVO-R, Carbon Fiber Element, Nitrous Outlet
MECP Advanced: CEA26671
Most of what I post here are artistic works of fiction and falsehood. Only a fool would take anything I post here as fact.

Ketchi

Maybe I missed it, but I am putting in braum seats tomorrow. I'm confused to if I do take out the weight sensor and just put it upside down will the airbag always be armed or if it is off. Also if anyone found a way to make the airbag always be armed and can tell me how to do that I'd appreciate it.

madeinjapan

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