Airbag light on- how much to clear?

[bonno]

Further to Bazz's comments, the information contained on this thread/post is very useful for clearing Air Bag/ Side Curtain air bags fault. I would just like to add that as Neil has indicated in his post the connectors should be effectively secured/taped to prevent fault from reoccurring and just as important to disconnect battery before attempting rectification procedure (prevent accidental firing).

[SeleMatt]

Could anybody please confirm that the link below is the OBD connector cable adapter needed to connect to the airbag ECU?

https://www.ebay.com.au/itm/16Pin-to-3Pin-Female-OBDII-Car-Auto-Diagnostic-Connector-2-Clip-Cable-for-Fiat-U/163910564518?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818142525%26meid%3D9e390bf6f4994c22a8181d3d66201a3c%26pid%3D101195%26rk%3D1%26rkt%3D12%26mehot%3Dco%26sd%3D324187213696%26itm%3D163910564518%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithBBEV2bDemotion&_trksid=p2047675.c101195.m1851

[bazzbazz]

No, that's for use with early series Phase 1 GTV/spider.

You need a set of either of these -

https://www.ebay.com.au/itm/3pcs-OBD2-For-Alfa-Fiat-ECU-Scan-Car-Diagnostic-Cables-MultiECUScan-Adapter-AU/283563901060?hash=item4205b9c084:g:MJUAAOSwzYteIfSi

https://www.ebay.com.au/itm/Diagnostic-Cable-Adaptors-for-use-with-MultiECUScan-Engine-Airbag-ABS/123720491908?hash=item1cce50e384:g:9nAAAOSwDZxTzmFI

Plus you will need a KKl/K-line cable to use with the Red Adapter cable for connecting to 147/156 or earlier Alfa series as they won't allow connection with ELM Adapters.

[SeleMatt]

As always, thanks Bazz.

[SeleMatt]

Okay. So I connect to the ecu and get the middle of the screen boxed message. WARNING; Unknown ISO code. Module cannot be indentified!  Pressing y to continue and checking the error codes gives. 22 - Curtain airbag squib (passenger) Value too high/ intermittent/Present/13
At the bottom of the screen and flashing is the message WARNING; Invalid ISO code for selected vehicle system!

Unable to clear error code

Any advice as to where to from here appreciated.

[bonno]

Have you tried disconnecting and reconnecting the orange and yellow connector located in boot applicable to side curtain air bag (refer to previous posts on this thread).

[bazzbazz]

If it says Passenger Side Curtain Squib then  it will actually be the Drivers side that's the problem, remember, these were originally designed as LH drive cars. 

[poohbah]

Thought you guys might be interested in my airbag warning experience.

Light came on in my 156 2 months ago when someone moved passenger side seat while engine was running.

I thought no worries, will get it reset when car was in for scheduled service (yesterday).

Received the dreaded "please call workshop" message 3 hours before car was due to be collected.

Wasn't the simple reset I expected -  actual airbag control unit was shot (car is 21yo I suppose...).

Cost of new replacement unit? $1500!!!!  Though they also had a serviceable 2nd hand unit which "only" cost $650.

I did briefly think about saying nah forget it, but I knew my missus would notice the light on ...

It was annoying as I had hoped to get away with one of those very rare "<$500" standard services...