08 MK3 Clio - B107F, B0001 and B0002 error codes (airbag problems)

[dmae]

Hi,

Following codes were displayed:

B107F - Air bag control unit
B0001 - drivers side front airbag igniter circuit 1 open circuit
B0002 - igniter circuit 2 open circuit

Garage quoted:

£78 - for seatbelt pre tensioner
£220 - for airbag ecu
£80 - labour

That's a lot of money

Is there anything I could do to make it cheaper? Maybe buy my own ECU? http://www.ebay.co.uk/itm/RENAULT-C...arts_Vehicles_CarParts_SM&hash=item20e2931232

Is there anything obvious that I could try to fix these errors myself?

Any help appreciated.