they stick a tech2 on the connector, at some stage did you d/c the battery? it may read a low volt code or the relay could be suss, first use another relay like a umm, whatever isnt needed for a quick idle, they are cheap from most after market shops ie supercheap/dear auto, then make sure. if you go to a mechanic, dont call just rock up, hide ya p-plate if ya have one (i dont-just saying) give them a sob story, ie: my wife needs the car after ive you have worked night shift and has to pick up the 3 little ones from school and is worried about the air bag not working she is worried about lights on dash board etc. might do it for free. One other thing ive seen, correct me if im wrong by the way but just put some black elec tape over the airbag light if its really concerning, and on another note, airbags are dangerous, they bloody hurt, make sure your drivers seat is like a recliner chair and drive with your right arm (as per usual commy drivers) out the window, no worries