How can I check my airbags?

Hello, since yesterday I have my “new” Volvo 850 TDI. When I drove home to the yard I looked over the dashboard. Since much then I looked up the cover of the passenger airbag. Their edges stand up. If I light up the ignition instead of all the bulbs. Only I can’t detect/find an airbag light. I’ve been looking for a long time here in the forum. It was said that it would have to burn an airbag light for a short while. That the car has defects like a defective wheel bearing, spinning starter, or it drips at the front right of the tub oil is all ok. I can also get the defective ABS. BUT with the airbags I don’t understand any fun. Also with a 1000 € Volvo not. Therefore my two questions: How can I find out if I still have airbags? How can I check if they would work? Can someone help me?