Immobiliser Lockout?

[mullbram]

Hi, my daughters 2004 Ducato E425 Bessacar, 2.8 JTD

I think the immobiliser has stopped the engine from starting?

It's fitted with a Sigma AC110, can any one tell me if this is an after market system or a Fiat Factory Fit?

Bessacar says its Fiat Fit, Scorpion who owns Sigma wont say,

The Engine will turn over but will not Fire, the breakdown Chap says it is showing an Electronic Key Fault on his Diagnostics, but says there is no Fuel to the Pump.

Vehicle came with only one Key, so 3 weeks ago my Daughter had another Key Cut and Chipped by a Reputable Locksmiths in The City near where we live,

Drove the Vehicle Home and Parked it Up
Went out on Sunday to start it and it would not Fire up.

My theory and only a theory is she Drove it home with the Old Key in the ignition, no probs

When she tried to start it on Sunday using the New Key it did not like it and set the Immobilser?

It will not now start on any of the key
Have ordered emergency code via Fiat £18.00 and hope that it tells us wether it is the Keys/immobiliser.

At least it will diagnose that theory?

Any Help would be great.

Many thanks

Mullbram

 

[TheBig1]

there is a known issue with immobilisers of that age. any decent auto electrician can bypass it. the alarm is after market

 

[mullbram]

Thanks TheBig1, can you tell me where the lift pump would be located? have read so many times about listening to hear if it is coming on,(which i cant hear) so was wondering if i could actually listen where it is located while my daughter turns over the engine.

Also just read in the User Manual, that you cannot perform the emergency overide with the pin code on the Diesel engine, so why Fiat have charged me £18 for the code (which they still have not come back tome yet) i dont know?

Best Regards
Mullbram

Ps anyone know a Auto Electrician/ Alarm Engineer near Norwich who would come out?

 

[mullbram]

Hi, received the Keycode from Fiat, which is actually Used for the Emergency start up procedure as well as duplicate keys but dont want to work, as stated it says in the manual (wont work for Deisel Engines) but Heyho at least we have the Actual Keycode if Keys get lost.

Got a call from Fiat Italy this morning advising that they have received my request asking if the second fitted Alarm Immobiliser is a Bessacar Addition? and they will get back once they have Traced the Build.

Still cannot start the Van, Turn the Key the Alarm Siren fires off, press the key fob turn it off, Turn Key and it Turns over at full Pace but wont start,
Turn the Key off and to try to start it again, you have to go through same procedure, Is it the Sigma A11 Alarm Immobiliser or Faulty Pump.

Seems to me Immobilisor shutting off fuel? but i am an old retired Brickie so what do i know lol.

Can anyone please advise where the Low Pressure Diesel Pump is? is it actually in the Fuel Tank?

Any Help much appreciated, until i can be a bit more sure what it is, i am reluctant to call out Alarm?Vehicle Electrician or Mechannic as to the cost of each.

Very Best Regards
Mullbram

 

[TheBig1]

i presume that you have checked that the receiver ring round the ignition lock has not slipped. and yes pump is in the tank

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[airwave]

Ops , sorry clipped the wrong button . turning the page .


I'm afraid it sound's very much as though the alarm is aftermarket . My understanding is that the original system did not have a siren , it was a pure immobiliser , and prone to failure .

 

[Emmit]

On the assumption (bad word and action) that all 2.8JTD's are the same, I can confirm that our 2005 front end 2.8JTD does not come with a siren. It has only an immobiliser.

I have posted on here before. We once had problems with the 'van when we had the car keys in our pocket. ??? It would have seemed that the car keys were talking to the Fiat and it (the Fiat) felt under threat and refused to start. Taking the car keys 'out of range' cured the problem. Just a suggestion.

 

[cranky]

i thought immobilisers generally cut out at the ignition so it would not even turn over.

 

[Emmit]

On the OP's (and mine) the engine spins but there is an additional light comes on in the bottom left side of the speedo that shows an ignition. with a line through it

 

[SIFTA SAM]

My Sigma immobiliser 'cuts off' the Fuel Pump and Starter Motor

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[airwave]

How is this system activated , is it by simply removing the key from the ignition , or do you have a key fob (in effect press a button) .

i thought immobilisers generally cut out at the ignition so it would not even turn over.

Working on the assumption it is an after market immobiliser , they can work in several way's depending on the system , and of course how's it's wired . Some of the more expensive cat 2 unit's , can if i remember correctly disable upto three system's at the same time , but none have a siren . The fact that a siren sound's , lead's me to believe that this is a non standard cat 1 alarm . The other thing i would expect is some kind of visually warning/reporting system that it's set , yet the op has made no mention of this .

 

[Pausim]

Several years back I saw a recovery vehicle taking a motorhome away from the Crystal Palace site. "Oh dear" I said to the Warden "that looks a bit of an unplanned end to a holiday". "Probably not" she replied "happens here occasionally, they usually start normally down the road when they are moved away from the tv transmitter". It seems that a few earlier immobilisers can be upset by strong radio signals. No idea if this is technically correct or relevant.

 

[Superpete]

My sigma alarm stops the fuel pump and starter motor .The system is an after fit. The fuel pump is located in the tank under the cab floor. When yo press the button on the sigma fob(after turning on ignition)you can just hear the fuel pump running. If you can't hear it the pump is not running and you won't start. Some Sigma's are wired up so that the pump only is isolated. Hope this helps. I have had several Sigma's fitted over the years and would rate them highly.

 

[jezport]

Its not a standard Fiat alarm, they dont fit Sigma.
The older Non JTD version did have issues with the immobiliser the JTD did not. If the Fiat imobiliser is not recognising the key, a light will light on the dash while trying to start. I think it may be a picture of a key but cant 100% be sure.