I'm assuming this is an airbag ECU failure

[Basa]

I’ve seen recommendations to fix an additional earth wire to the ehu, does it work?

 

[Lenny HB]

I’ve seen recommendations to fix an additional earth wire to the ehu, does it work?

I don't think anyone knows but it won't do any harm. I fitted a 16mm2 link direct to the battery.

 

[the1andonly]

If I do buy a new one (expect mine will trip again at some point) I have neighbours with multiecuscanners and would appreciate any pointers to instructions on proxy setting.

One of a few guides on FF​

​

New proxi alignment with Multiecuscan

To create a new proxi file (once you have changed things that need a proxi alignment). For example changing an airbag module. Prior to any proxi alignment it is advisable to create a backup first. See guide...

www.fiatforum.com

 

[stevec]

Heard back from Northern Auto Tech. My ECU is duff. The B0100 code can be cleared but comes back again at power up, so new unit required. Its a toss up between getting a new unit myself and buying Multiecuscan or getting Fiat Professional to do it. I'll probably go with the later as it will have a warranty (I hope). The annoying thing is that even though I know the ECU is duff Fiat still want to do a diagnostic on it first before they change the module. I'm booked in next Wednesday.

As an aside I spoke to Gendan regarding Multiecuscan and using it on my new van (in April - hopefully). They say an adaptor is available to physically bypass the Fiat security gate. it involves unplugging a couple of cables.

 

[Lenny HB]

The annoying thing is that even though I know the ECU is duff Fiat still want to do a diagnostic on it first before they change the module. I'm booked in next Wednesday

Took my van in without the ECU.

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[stevec]

Took my van in without the ECU.

I tried to persuade them that I had it checked out by a company that only does ECU repairs but the service guy was adamant that as a Fait Professional company they are bound to follow proceedure and that means a diagnostic before they do any work. Their supply and fit price is £365 and diagnostic £84 so still only £60 or so above the DIY price (Coastal motorhome want £250 for the module). I'd have to buy Multiecuscan or similar to do the proxi align.

 

[Hettie's Crew]

Heard back from Northern Auto Tech. My ECU is duff. The B0100 code can be cleared but comes back again at power up, so new unit required. Its a toss up between getting a new unit myself and buying Multiecuscan or getting Fiat Professional to do it. I'll probably go with the later as it will have a warranty (I hope). The annoying thing is that even though I know the ECU is duff Fiat still want to do a diagnostic on it first before they change the module. I'm booked in next Wednesday.

As an aside I spoke to Gendan regarding Multiecuscan and using it on my new van (in April - hopefully). They say an adaptor is available to physically bypass the Fiat security gate. it involves unplugging a couple of cables.

Don’t Northern Autotech supply them then, when mine was declared deceased with the same code by Crashdata they supplied one for £300.

 

[stevec]

Don’t Northern Autotech supply them then, when mine was declared deceased with the same code by Crashdata they supplied one for £300.

He didn't offer to supply one. He did say that Coastal Motorhomes was probably the cheapest place to buy so gave some direction to go. I have just received my old unit back from Northern Auto Tech. Full marks to them for their "green" packaging. Plastic bag was compostable, paper "bubblewrap" like padding and paper sticky tape. The only plastic was the Haribo's package! I had several texts and phone calls with Carl so communication was good except he never answered my initial online contact enquiry. Best to send him a text. Also a good idea to put your name and phone number on the actual ECU (or the ECU serial number on the paperwork, downloadable from their website) as they lost the connection between the two. Sorted with a phone call. Although they couldn't fix the fault (they could clear the B0100 code but it came back at the next power up) it was a good experience with them and they returned the unit to me within 24 hours at no cost to me (just my initial sending cost). I have the van booked in next Wednesday with Fiat. Fortunately we've not needed to use the van as we are both laid low with bad colds and cough (thank you grandchildren!).

 

[Lenny HB]

If getting one from a third party supplier make sure it is the latest version. Also best to check even if getting one from Fiat.

 

[stevec]

If getting one from a third party supplier make sure it is the latest version. Also best to check even if getting one from Fiat.

How would I know if it the latest?

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[Lenny HB]

How would I know if it the latest?

I posted it n the other thread, I'll try and find it.

 

[Lenny HB]

Fiat ducato air bag warning light is on…..AGAIN.

For the 3rd time in less than 12 months the air bag warning light is back on the dash.The last time was 6 weeks ago when it cost me £88 with crashdata to have the module reprogrammed.I did ask the question then why has it gone again.One of the replies it could be high voltage when starting the...

www.motorhomefun.co.uk

 

[the1andonly]

As an aside I spoke to Gendan regarding Multiecuscan and using it on my new van (in April - hopefully). They say an adaptor is available to physically bypass the Fiat security gate. it involves unplugging a couple of cables.

DId they state which years Ducatos actual have the SGW. 500s started in 2018 but at leat some 2019 ducatos do not (sept ?) ie twin egr no adblue yes?

 

[Jimbohorlicks]

Is anyone aware of the ideal voltage to prevent spiking or otherwise to the airbag ecu.?

 

[Stealaway]

There's no such thing - it's a complete lottery.
It fails for no apparent reason - the voltage reports are simply just rubbish.
It's a crap Fiat module and a scandal that they have fitted the same module since before 2011.

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[Tigger-Tim]

DId they state which years Ducatos actual have the SGW. 500s started in 2018 but at leat some 2019 ducatos do not (sept ?) ie twin egr no adblue yes?

My 2021 Citroen Relay doesn't have the SGW. Multiecuscan can connect to everything except the engine.

 

[Lenny HB]

It's a crap Fiat module and a scandal that they have fitted the same module since before 2011.

Yep its crap but they started fitting a new version last year.

 

[Scout]

mines in to a Fait proff service garage now, the part came Friday so I'll get it back next week, the fitter said he had done 7 in the recent past, the part is not up to the job, and the ones on newer van are different part number. Its also getting full cam belt experience so i'll be eating beans for a month

 

[Alan Atkin]

I've been diligently making sure that the cab battery has been kept topped up, at least at the point of starting the engine. No problems in 7 1/2 years (2015 x290). I've recently had the van on charge for a couple of days as not much sun over Christmas to keep things topped up. I was clearing out the scuttle drainage pipes and decided to move the van to rotate the tyres. Lo and behold, flashing mileage value and airbag icon lit. A brief message to check airbag. I'm assuming this is indicative of the dreaded airbag ECU fault. I can only assume that with the van still being on mains that the battery voltage was seen as too high. Anyway, regardless of the fault looks like a new ECU is needed. I'll get the fault codes checked (a friend has Multiecuscan). Thats another expense that our delayed delivery of a new van has caused (all new tyres last summer). Anyone bought a new one and is it a DIY install or will I have to go to a FIAT professional garage (how much?). I've read mixed reviews of Crashdata so a bit nervous.

Be sure to fit an extra earth wire as I was recommended to do by peugeot . buy an ome ( £75 ) from internet when mine went.you cant get mixed up with the wiring as the connections are different sizes. then just take it to a dealer to set up. mine cost me £500 at a dealer but asked for the original back it was all packaged up to go for repair prices will have changed by now. posted earlier on this

 

[philmc79]

Crashdata all day long send your old one, one day get the fixed one back 2 days later, Jane is great to deal with.

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[the1andonly]

My 2021 Citroen Relay doesn't have the SGW. Multiecuscan can connect to everything except the engine.

thanks that interesting. by the way Alfaobd can connect to Boxer and relay engines ( on earlier ones try the demo version first)

 

[Stealaway]

Crashdata all day long send your old one, one day get the fixed one back 2 days later, Jane is great to deal with.

How long has it lasted since you refitted it?

 

[WednVegas]

Our fiat also developed an initially intermittent airbag warning light and on reading up assumed it was an ecu failure although battery has not flattened and is run regularly. Local auto electrician was unable to access the ecu with his scanner to test, (£45 down). Went into fiat garage for service and explained about airbag warning. They put a new ecu on but it did not solve the issue. Charged £75 to test. It now has to go back as they think it is a wiring issue

 

[Dunhoverin]

When refitting the airbag ECU make sure the plugs are securely fitted or the airbag light might still be there; ask me how I know this!

 

[The Rum Runners]

My crash data repair lasted two weeks and they wouldn't accept any responsibility for it, crooks IMO, a few other Funsters have had problems with their repairs.

I have been through a similar experience with Northern Auto Tech. First time MES wouldn’t recognise the ‘repaired’ module, returned it and 2nd time it worked, went through proxi alignment fine but left me with a drivers airbag resistance fault that wouldn’t clear. I have now bought a new module from Coastal Motorhomes and everything is fine now, no faults. Should have saved money from the start and just bought a new one, lesson learnt.

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[B_Bogus]

I'm yet another Funster who has 'enjoyed' the experience of the Airbag warning light on our 2013 2.3 Ducato 250 Facelift Rollerteam 685.

It's all sorted now, but I thought it would be useful to share my experience.

The Airbag Fail light came on after starting the van with a slightly depleted battery.
I removed it to send to a repairer, but having seen many others' experiences of failed repairs I concluded that a new replacement was the only guaranteed fix.

I spoke to Coastal Motorhomes, who are competitively priced and very knowledgeable, although I didn't appreciate being accused of starting the engine before the initiation sequence had completed
I'm fortunate in having trade contacts who sourced the correct part number from Fiat at an almost tolerable price, so that was fitted along with a new battery.
Fiat quoted £130 +VAT to clear the fault, and my local MH-friendly garage quoted £150-200 for 'their' auto-electrician to do the job

Having previously fitted new units in Audis and having to go through a fairly involved coding process with VAG-COM (VCDS) I was expecting it to be rather involved, and for some reason I'd assumed I'd need the fully featured Multiecuscan to do the job, but the basic Licenced version is all that's needed, along with the yellow adapter, and it's actually very straightforward:
I cleared down the fault codes, then carried out the Proxi alignment procedure to recognise the new Airbag ECU:
It's as simple as this:

Connect MES with yellow adapter
Open Body Comp. -> CAN Setup/Proxi Alignment Procedure -> F7 Adjustments

Not necessary, but advisable: To save the existing config file, hit Ctrl+Alt+C -> a file appears; copy the Hex codes (don't change anything!) into Notepad & save, then close window.

F10 Execute -> Y... Modules update sequentially, around one minute.
Turn key off -> Y
Job done

Total cost including MES & Leads was around £400, but the ECU was more expensive than later (2014) variants.
Coastal Motorhomes were very clear that the replacement ECU MUST have the same part number as the original, so there's no way of going for a product improvement.
The new unit I fitted has a build date of 2023.
Must be a great money-spinner...