How to fix your airbag light.. - Alfa Romeo Forum
You are currently unregistered, register for more features.    
 15Likes
Reply
 
Thread Tools Search this Thread
(Post Link) post #1 of 90 Old 26-04-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Thumbs Up How to fix your airbag light..

OK, this is not intended as a definitive fix thread but covers probably the most common cause of the airbag warning light displaying on the dash. I'll try to be as accurate as I can and hopefully the pics are clear enough for most to understand.

Due to new regulations (in the UK) cars with an illuminated airbag warning light will fail the annual MOT test. A lot of people worry that this is going to be an expensive fix and I've heard some garages are charging for new airbag units rather than checking the known common faults.

First things first. Disconnect your battery and leave it for at least 15 minutes (make sure you have your radio code though).

Next up you will need a few basic tools available from many DIY stores. Servisol Super 10 electrical contact cleaner/lubricant, some small cable ties, some wire cutters/pliars. it would also be handy to have a copy of Multiecuscan installed on your laptop and a set of cables.
http://i125.photobucket.com/albums/p...psa313c00f.jpg

Right, find the yellow connector under the passenger seat, there's usually a cover over it. remove the cover to expose the connector..
http://i125.photobucket.com/albums/p...ps164c6fff.jpg
seperate the connector (careful not to break the clips), give it a short blast with Servisol/contact cleaner and reconnect. Then secure the connector together using a cable tie...
http://i125.photobucket.com/albums/p...ps0d3ba4a9.jpg
http://i125.photobucket.com/albums/p...psfb92ac33.jpg

In most cases this is often enough, but in some instances the issue may be with one of the two connectors in the boot. They can be found on the drivers side (UK/Austrailia) under the lining roughly behind the fuel filler area...
http://i125.photobucket.com/albums/p...ps54a23b11.jpg
repeat the above proceedure and replace the boot lining.

reconnect the battery (you do have the radio code don't you!) and start your car, the light should now be extinguished.
Some older models (pre-2004) may require the code to erased/reset, this can be done with Multiecuscan/alfadiag and the correct interface

Multiecuscan - Diagnostics software for Italian cars (Powered by FiatECUScan)

one of these cables will work:
http://www.ebay.co.uk/itm/ALFA-FIAT-...item3cd0a06b98

or contact Rarebear on here for one of his.

follow the multiscan setup instructions and connect to your car via the diagnostics port which is located in the fusebox...

http://i125.photobucket.com/albums/p...ps290154a6.jpg

select your model from the list and connect to the airbag module. navigate to errors and you will see the stored codes, hit erase and hopefully that should be all you need to do...

http://i125.photobucket.com/albums/p...ps0f308009.jpg
http://i125.photobucket.com/albums/p...psb58b1d30.jpg
http://i125.photobucket.com/albums/p...ps7431531b.jpg

I hope this makes sense...

www.facebook.com/tjr5150 For all your valeting and detailing needs.
Tommywho156 is offline  
Sponsored Links
Advertisement
 
Status: Gold Member
AO Gold Member
 
rarebear's Avatar
 
Join Date: Sep 2002
Location: The Netherlands
Posts: 7,026

Member car:

911, 156, Merc C

Great stuff !!!! hopefully an end of all ghost stories about airbags !!! thank you !
rarebear is offline  
Status: It is what it is
AO Member
 
Join Date: Jan 2012
Location: I would rather not say
County: -
Posts: 158

Member car:

Alfa 147

Nice one - should be really helpful and cut down airbag light question threads.
Anthony147 is offline  
Status: -
AO Silver Member
 
Cream's Avatar
 
Join Date: Mar 2002
Location: wrexham
Posts: 1,299
Images: 2

Member car:

Brera 2.4SV

are the cables in the boot for the curtain airbags by any chance?
Cream is offline  
(Post Link) post #5 of 90 Old 26-04-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Quote:
Originally Posted by Cream View Post
are the cables in the boot for the curtain airbags by any chance?
Yes.
Tommywho156 is offline  
Status: Gold Member
AO Gold Member
 
rarebear's Avatar
 
Join Date: Sep 2002
Location: The Netherlands
Posts: 7,026

Member car:

911, 156, Merc C

check out Youtube rarebear14 for a demo of alfadiag on my own 156 selespeed
rarebear is offline  
Status: it might be ok
Club Member
Membro Premio
 
Elvis Presley's Avatar
 
Club Member Number: 59
Join Date: Aug 2006
Location: In a rockin good place
County: Memphis
Posts: 73,154
Images: 5
Garage

Member car:

A galleon

weekend job coming up!
Elvis Presley is offline  
Status: I have a GTA now!
AO Member
 
Alfa156Melb's Avatar
 
Join Date: Oct 2011
Location: Australia
County: Victoria
Posts: 930
Images: 14
Great guide, but do I really have to go buy an AC/DC album to successfully complete the job?

Is there a substitute?

IMAG0849_zpsa313c00f.jpg Photo by tommywho5150 | Photobucket
cyalfa156 likes this.
Alfa156Melb is offline  
Status: it might be ok
Club Member
Membro Premio
 
Elvis Presley's Avatar
 
Club Member Number: 59
Join Date: Aug 2006
Location: In a rockin good place
County: Memphis
Posts: 73,154
Images: 5
Garage

Member car:

A galleon

shudder
Elvis Presley is offline  
(Post Link) post #10 of 90 Old 24-05-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Quote:
Originally Posted by Alfa156Melb View Post
Great guide, but do I really have to go buy an AC/DC album to successfully complete the job?

Is there a substitute?

IMAG0849_zpsa313c00f.jpg Photo by tommywho5150 | Photobucket
Van Halen works equally well!
cyalfa156 likes this.
Tommywho156 is offline  
Status: it might be ok
Club Member
Membro Premio
 
Elvis Presley's Avatar
 
Club Member Number: 59
Join Date: Aug 2006
Location: In a rockin good place
County: Memphis
Posts: 73,154
Images: 5
Garage

Member car:

A galleon

Elvis Presley is offline  
Status: -
AO Member
 
Moth's Avatar
 
Join Date: Jul 2012
Location: United Kingdom
County: Greater Manchester
Posts: 73

Member car:

GT 1.9 Jtd

Cheers for the guide, it's MOT time and that's one more job off the list. Now for the rear fog....
Moth is offline  
Status: -
AO Member
 
Sooty Si's Avatar
 
Join Date: Jun 2007
Location: Lincolnshire
County: UK
Posts: 396
Garage
Hey mods, how about making this a sticky?
Sooty Si is offline  
(Post Link) post #14 of 90 Old 30-05-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Quote:
Originally Posted by Sooty Si View Post
Hey mods, how about making this a sticky?
It already is, in the 'How To' section at the top of this forum..
Tommywho156 is offline  
(Post Link) post #15 of 90 Old 01-08-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Bumped as I know some people are having problems and not found this thread yet...
Tommywho156 is offline  
(Post Link) post #16 of 90 Old 01-08-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Forget this post, AutoGuide is posting in random threads again!...
Tommywho156 is offline  
Status: Gold Member
AO Gold Member
 
rarebear's Avatar
 
Join Date: Sep 2002
Location: The Netherlands
Posts: 7,026

Member car:

911, 156, Merc C

and for all those who still struggle to get the light out !

I had a number of cases that the ACU was knackered and only a replacement ACU (use the same number!) does the job. I recommend Autolusso.co.uk for a good ACU
rarebear is offline  
(Post Link) post #18 of 90 Old 01-08-13 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Quote:
Originally Posted by rarebear View Post
and for all those who still struggle to get the light out !

I had a number of cases that the ACU was knackered and only a replacement ACU (use the same number!) does the job. I recommend Autolusso.co.uk for a good ACU
That's actually a really good point that I missed in the original post...
Tommywho156 is offline  
Status: -
AO Member
 
Join Date: Aug 2013
Location: Norway
County: Oslo
Posts: 90
Great thread, but I had the same issue that was not solved simply by checking the connectors in the boot.
See this thread for my solution: http://www.alfaowner.com/Forum/alfa-...onnectors.html

If you have curtain airbag squib errors 21 or 22, check underneath the hat rack inner liner in the boot. There are two more connectors that attach to the airbag gas generators/cartridges for each side.

Be careful, disconnect battery etc.!
SillyspeedJTS is offline  
Status: -
AO Member
 
elementar's Avatar
 
Join Date: Jan 2012
Location: Russian Federation
County: Moscow
Posts: 10
Good guide.

But i want to add my problem with airbag =) - I had a weak connect on pin in line before the passenger airbag. It's situated under the glove box.
And to fix it - i decided to solder wires before airbag passenger pin.
After this procedure the warning lamp has been extinguished
elementar is offline  
Status: -
Newbie
 
Join Date: Nov 2012
County: -
Posts: 1
Airbag light

Quote:
Originally Posted by Tommywho156 View Post
OK, this is not intended as a definitive fix thread but covers probably the most common cause of the airbag warning light displaying on the dash. I'll try to be as accurate as I can and hopefully the pics are clear enough for most to understand.

Due to new regulations (in the UK) cars with an illuminated airbag warning light will fail the annual MOT test. A lot of people worry that this is going to be an expensive fix and I've heard some garages are charging for new airbag units rather than checking the known common faults.

First things first. Disconnect your battery and leave it for at least 15 minutes (make sure you have your radio code though).

Next up you will need a few basic tools available from many DIY stores. Servisol Super 10 electrical contact cleaner/lubricant, some small cable ties, some wire cutters/pliars. it would also be handy to have a copy of Multiecuscan installed on your laptop and a set of cables.
http://i125.photobucket.com/albums/p...psa313c00f.jpg

Right, find the yellow connector under the passenger seat, there's usually a cover over it. remove the cover to expose the connector..
http://i125.photobucket.com/albums/p...ps164c6fff.jpg
seperate the connector (careful not to break the clips), give it a short blast with Servisol/contact cleaner and reconnect. Then secure the connector together using a cable tie...
http://i125.photobucket.com/albums/p...ps0d3ba4a9.jpg
http://i125.photobucket.com/albums/p...psfb92ac33.jpg

In most cases this is often enough, but in some instances the issue may be with one of the two connectors in the boot. They can be found on the drivers side (UK/Austrailia) under the lining roughly behind the fuel filler area...
http://i125.photobucket.com/albums/p...ps54a23b11.jpg
repeat the above proceedure and replace the boot lining.

reconnect the battery (you do have the radio code don't you!) and start your car, the light should now be extinguished.
Some older models (pre-2004) may require the code to erased/reset, this can be done with Multiecuscan/alfadiag and the correct interface

Multiecuscan - Diagnostics software for Italian cars (Powered by FiatECUScan)

one of these cables will work:
http://www.ebay.co.uk/itm/ALFA-FIAT-...item3cd0a06b98

or contact Rarebear on here for one of his.

follow the multiscan setup instructions and connect to your car via the diagnostics port which is located in the fusebox...

http://i125.photobucket.com/albums/p...ps290154a6.jpg

select your model from the list and connect to the airbag module. navigate to errors and you will see the stored codes, hit erase and hopefully that should be all you need to do...

http://i125.photobucket.com/albums/p...ps0f308009.jpg
http://i125.photobucket.com/albums/p...psb58b1d30.jpg
http://i125.photobucket.com/albums/p...ps7431531b.jpg

I hope this makes sense...


Thanks for your post. I solve my problem. It was the connector in the luggage compartment. I just unplug it and clean it. Then i use the ECU Scan and clean the alarm. It works.
mascsilva is offline  
Status: How many more cambelts? Service overkill surely?
AO Member
 
Jim Burton's Avatar
 
Join Date: Sep 2007
Location: United Kingdom
County: Essex
Posts: 80
...and if you can't get the plastic cover off...

...under the passenger seat, here's how (brought across from main 156 thread)

Successful removal of the plastic cover accomplished with the aid of large torch, medium sized mirror and grim determination to get the job done. The pain can be lessened by sticking the motor in first gear and releasing the handbrake.
Now with the seat back as far as possible I was able to glimpse a sort of bent-double plastic loop/clip on the front side (left as you look at it). I stuck a medium screwdriver blade through the loop and levered away, and to my relief and surprise, it just popped out. Nothing broken. With a bit of wiggling (technical term) the now-loose cover released itself from what turned out to be two small lugs at the back either side and a springy kind of lip at the rear.

All of which description will be a lot clearer I hope if you see the photos which follow.

Attachment 287890

Attachment 287898

Once you figure out how to separate the yellow and white connector (press the white bit in) give the interior of each part a good squirt with Maplins switch cleaner or similar and plug/unplug a few times, then re-connect the battery, you should be good to go.
On my motor, the airbag light flickered, went off, then came back on and then stayed off Never, I hope to be seen again - but to be on the safe side, I've booked in for my MOT a month early!!!!![/QUOTE]

Only 33 1.8 TS Veloces left, and counting...
Jim Burton is offline  
Status: it might be ok
Club Member
Membro Premio
 
Elvis Presley's Avatar
 
Club Member Number: 59
Join Date: Aug 2006
Location: In a rockin good place
County: Memphis
Posts: 73,154
Images: 5
Garage

Member car:

A galleon

Brilliant!!!!!!!
Elvis Presley is offline  
Status: OEM++
AO Silver Member
 
Egon's Avatar
 
Join Date: Jan 2012
Location: United Kingdom
County: Kent
Posts: 2,012
Images: 2

Member car:

147ts plus bits

Can we get this pinned/stickied please, for when it happens to the rest of us!
Egon is offline  
(Post Link) post #25 of 90 Old 01-03-14 Thread Starter
Status: TJR Valeting
AO Silver Member
 
Tommywho156's Avatar
 
Join Date: May 2012
Location: United Kingdom
County: Leicestershire
Posts: 2,267
Quote:
Originally Posted by Egon View Post
Can we get this pinned/stickied please, for when it happens to the rest of us!
It already is. In the 'how to' section at the top of the 156/147/GT lounge.
Tommywho156 is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT

Tags
airbag , fix , light

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome