Join Date: Feb 2009
Location: United Kingdom
Try the fuse first.
I have looked in the manual and the trigger, 2 of them , one piezzoelectric and one mechanical, are located in the air bag control unit which is bolted to the floor under the rear seat squab, front and centre.
Up to chassis number 6016878 the wires for the Drvers airbag are grey-green and light blue connected to pins 2 and 6 respectively (Becker Unit)
From 6016869 on, they are Blue and Blue black connected to pins 2 and 1 respectively
(TRW Control Unit).
It suggests checking continuity of these wires also earth leakage and contact with 12v+
If yours is the Becker unit you can cancel out the fault codes after the fault is found and fixed, by earthing pin 3 of the control unit for 5 - 10 seconds . Or change the unit.
If you have the trw unit it must be reset at a dealer or change the unit.
hope this helps.
Cheers ~ Jumblies