Read all the codes again, then press and hold the button down for 8 seconds, release the button and when the LED lights, press the button for another 8 seconds. Then read the codes again and if you're lucky, you'll get a 1-1-1 indicating no faults. If you get one or more re-occuring faults, the problem is still there and you'll need to diagnose it further, depending on what it is. Whatever you do, never check an airbag with a VOM as small voltage will blow it.