As above, even with CLIP, the fact that there's an impact detection code present means it will inhibit the ability of the diagnostic kit to clear any codes from that SRS ECM so the SRS MIL will always be illuminated. Also because of this data being present the ECM is scrap so needs replacing or sending away for the crash code to be erased from the EPROM (CLIP cannot remove the crash code as Renaults process demands the computer be replaced with a new unit though I've *heard* DDT can).
The SRS ECM itself is not "coded" as such to the car but they are setup to the vehicles specific requirements with certain hardware and trigger lines in mind (ie. is equiped with a drivers airbag, passenger airbag, curtain airbags, pre-tensioners, etc). All Clio II's use the same series of SRS ECM and so are interchangeable meaning if you took a unit from a '172 of a similar age it *should* just plug and play and be okay (Assuming of course it hasn't got any impact detection codes stored to) but you do have to be sure the setup is the same as you may find the lights stay on still until it is reconfigured or, worst case, run the risk of setting something off if it's setup wrong.
I have a great relationship with a local specialist Renault breaker who lets me test these things before I buy them for a customer so I know it can be used but I personally prefer to follow Renaults process and replace the SRS ECM from a good scrapper that's not got crash data stored and re-configure it with CLIP to the new vehicles setup and VIN rather than have the EPROM tampered with but each to their own.
Mick