Flashing airbag, after cambelt!

Technical questions and answers about the Mazda Bongo

Moderators: Doone, westonwarrior

roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Flashing airbag, after cambelt!

Post by roosmith » Tue Aug 12, 2014 5:49 pm

Just picked the Bongo up from the garage having had, glow plugs, cambelt and compression test carried out and noticed on way home that airbag light is flashing 6 times, then pausing. I've searched on here and seen lots of people talk about the clock spring (which means nothing to me) but I don't want to go down that route if its a possibility the garage have messed something up. Could any of those items have caused an issue with the airbag. It definitely wasn't flashing before it went in and it definitely is now!

Any suggestions gratefully received.
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
teenmal
Supreme Being
Posts: 3656
Joined: Thu Mar 27, 2008 6:08 pm
Location: north lanarkshire

Re: Flashing airbag, after cambelt!

Post by teenmal » Tue Aug 12, 2014 8:15 pm

This should give you an idea of what to check....

http://www.youtube.com/watch?v=FiO9wUb9FV4
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Tue Aug 12, 2014 9:40 pm

Interesting, I wonder if they've dislodged a connector then. Is there a list of codes somewhere for the Bongo then?
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Tue Aug 12, 2014 9:50 pm

Just had a quick look and have found a connector under the drivers seat not connected to anything but no obvious place for it to go. I have a funny feeling that was there before though.

The flashing been given is 6 flashes followed by pause and another 6 flashes, not a code like in the video unless 66 is the code?
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
User avatar
Simon Jones
Supreme Being
Posts: 9341
Joined: Mon Aug 29, 2005 3:34 pm
Location: Salisbury (ish), Wiltshire

Re: Flashing airbag, after cambelt!

Post by Simon Jones » Tue Aug 12, 2014 9:56 pm

Similar recent thread which contains useful search results: http://igmaynard.co.uk/bongo/forum/view ... ng#p632859

If the connector is under the seat but above the carpet than it it's the pressure sensor for the seatbelt warning indictator. If that's not been reconnected then it may indicate there could be others they have forgotten to plug in. There is a module under the dash cubby hole just in front if the gear selector and I believe it may be the impact sensor for the airbags, so that would be where I'd start my search (or ask the garage to rectify the problem).

I think it's 67-650 on this drawing:
http://lushprojects.com/bongopartsmk2/c ... o=.html#10
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Tue Aug 12, 2014 10:17 pm

That sounds like the connector but I don't have seatbelt warning, mines a 96, and why would the garage of unplugged it, the seat just rocks back?
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
User avatar
Simon Jones
Supreme Being
Posts: 9341
Joined: Mon Aug 29, 2005 3:34 pm
Location: Salisbury (ish), Wiltshire

Re: Flashing airbag, after cambelt!

Post by Simon Jones » Tue Aug 12, 2014 10:29 pm

When i last changed a cambelt, I removed both seats and the centre 'saddle' to get better access.

If there is a connector attached the underside of the seat and corresponding one sticking out the carpet, then it suggests vehicle is equipped with seat belt light. If its not connected then you wouldn't know you have one :)

This is page from manual showing where the light should be:
Image

And this is mine:
Image
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Wed Aug 13, 2014 11:05 am

Thanks for the reply Simon, that makes sense now, if they removed the seats and might have unplugged something. I'm not with the Bongo at the moment but unless someone has previously bypassed it, it doesn't have the seatbelt warning. And if it has already been bypassed then it isn't causing the new fault with the airbag light.

Does anyone know what the code is flashing?
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Wed Aug 13, 2014 11:08 am

Just spoken to the garage and they didn't remove the seats and didn't have to unplug anything, so can't shed any light on it.

Help!!!
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
Ian
Supreme Being
Posts: 5996
Joined: Wed Jun 09, 2004 2:47 pm
Location: Bongo Mission Control

Re: Flashing airbag, after cambelt!

Post by Ian » Wed Aug 13, 2014 12:04 pm

ALL Bongos have seatbelt warning lights.
668. The Neighbour of The Beast.
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Wed Aug 13, 2014 12:22 pm

Thanks for the reply Ian. That must mean that mine has been disabled, which is interesting in itself but doesn't explain why the airbag light is flashing. Like I say I have a feeling that connector was floating before anyway and there certainly isn't a corresponding socket for it to plug into to.
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
User avatar
Simon Jones
Supreme Being
Posts: 9341
Joined: Mon Aug 29, 2005 3:34 pm
Location: Salisbury (ish), Wiltshire

Re: Flashing airbag, after cambelt!

Post by Simon Jones » Wed Aug 13, 2014 12:36 pm

Roo, have you have a read of some of the threads previously linked? There are a few in there that mention flashing 6 times. There's this post here from Jim which indicates he has also seen the 6 flashes. Might be worth contacting him to compare symptoms:

http://www.igmaynard.co.uk/bongo/forum/ ... ht#p615446

One often referenced fault seems to be related to the clockspring which is set of contacts that connect the airbag to the steering column wiring. It could be an unfortunate coincidence that problem has occurred at the same time as cambelt was changed, but I'd be tempted to ask the garage to check it over as the problem has only appeared after they worked on it. Even if they didn't unplug anything at all, they could have inadvertently knocked a connection which has resulted in fault being indicated.

With regard to the seat belt indicator, it could be the bulb has blown on the instrument panel or been removed to mask a fault. As far as I know its not covered by the recent MOT changes so I'd be temped to ignore it. As you say, it's unlikely to be related to the current problem, but your enquiry was what the unidentified connector was for. Now you know and you can probably leave it alone :)
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Wed Aug 13, 2014 12:45 pm

Thanks Simon, as per my original post I could see the discussions on flashing 6 times and the clockspring but didn't want to start meddling when it had happened while other work was going on. I'm not going to get the garage to go over wiring they haven't touched as that could accrue hours of labour. I'll do some investigating myself first see what I can see. If 6 flashes is just a fault and not coded, then fair enough, I'll have to start at the beginning.

While I'm there I'll look at the seat belt connector. See if there is still cabling somewhere and what has been disabled and how!
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
Spencer54
Bongolier
Posts: 390
Joined: Sat Jun 29, 2013 7:52 pm

Re: Flashing airbag, after cambelt!

Post by Spencer54 » Thu Aug 14, 2014 11:26 am

You could pop the airbag off and check the connections are OK? A £1 3.3ohm resistor from Maplins can be put across the terminals as this is what the sensor is looking for. If that shuts it up then you know the fault is with the airbag?
roosmith
Tribal Elder
Posts: 855
Joined: Fri Sep 21, 2012 8:21 pm
Location: The Fens

Re: Flashing airbag, after cambelt!

Post by roosmith » Thu Aug 14, 2014 12:16 pm

Thanks Spencer. It probably is one of the first things I'll try. My steering wheel has always been off centre too, so two birds with one stone etc. Just need to search on here how to get the airbag out now!
Vivaro named Stewart however ex '96 4wd 2.5TD owner.
Post Reply

Return to “Techie Stuff”