Technical Can anyone help please, immobiliser light on, car won't start

[homeward]

If you go down scrap yard, what you have to do is get the ECU, BSI (behind the fusebox) Locks (petrol cap and boot lock, but if you get one off a remote locking car, you dont have to worry about the door locks so much, but would be handy) and thats about pretty much it, probably takes a hour to fit it all. no problem. There is a scrap yard down here that does them for quite cheap (got mine for around 25-35 quid i think so you shouldnt have to worry.

Just because his code reader wont connect it could be the inncorrect type

If you wish to get a cheap VAG-com cable or KKL cable off ebay cheap
or an ELM 247? *current version?*

Get Multi Ecu Scan - (Fiat ecu scan) trial edition - and get the code
Better to spend £10 to potentially fix it then give it a drastic diagnosis and be swapping stuff that aint needed

My guess is that, as Ziggy says, you need the right ECU reader (also see below); but if you do need the full set, as described above, there's currently a set for sale for £70 (haggle!) in the forum's Classifieds section -- here:

LOCKS, ECU & CLOCKS SET (Set consists of: ECU, inner & outer fuseboxes, Clocks, ignition barrel & 2x key, boot lock, drivers door lock, passenger door lock, locking petrol cap, all coded/matching removed from the car that have covered around 63,000)​

Otherwise, if you don't want, initally, to go down the route of using a laptop, etc. to read the ECU, I've started carrying one of these around -- it's a handheld reader: which works on my Punto.

Good luck...!

 

[anicola02]

I bought a code reader of ebay or gumtree if i recall correctly, i connected it and it kept just saying linking error when i had my keycode light on, when i bought my new ecu etc it started reading my codes fine! I would put a good £100 on this being the ECU fault!

 

[anicola02]

[/I]Otherwise, if you don't want, initally, to go down the route of using a laptop, etc. to read the ECU, I've started carrying one of these around -- it's a handheld reader: which works on my Punto.

Good luck...!

That is for a audi/volkswaggon (VAG) cars, it wont work on a fiat/ any other cars apart from, correct me if im wrong, Seat, VW, AUDI

 

[homeward]

That is for a audi/volkswaggon (VAG) cars, it wont work on a fiat/ any other cars apart from, correct me if im wrong, Seat, VW, AUDI

...which works on my Punto.

I bought it on the recommendation of another forum member; and the one time I used it (to check if it worked), it connected just fine! However, I do have the cable set, etc. on order, so I can use FES to clear some old codes off there, and generally have a more thorough 'toolkit' to hand...

 

[DAZMAN 61]

You could get your original ecu tested for faults and repaired off the car by a specialist(search google,a few there) they charge about £35 to run a check then if a fault is found the let you know the full cost of repairing,aprox £125 all in.Check them out,look for ecu repairs,hope this helps

 

[princess1]

hi thankyou for your help

 

[s and b]

to get a punto engine to run you need
fuel
air
compression
spark

even a man with spanners in a wheelbarrow who professes to no summatt abart cars could give this baby a once over and pronounce probable cause

i once took an ecu to a local specialist it was a saxo with the keycode box and car came with no code,he wanted to take it round the back of his workshop have a fag come back tell me he couldnt cleanse the eprom and charge me £50 -------how i larfed

no way
as for the garage open on a bank holiday monday advising go to dealer well words just fail me,they obviously need the money but dont know how to make it

 

[princess1]

Hi got car fixed today, turned out it was a broken earth cable that went to the engine, am thankfull that it wasn't worse.

 

[atom0007]

Hi there, if the diagnosis reader cannot read the ECU faults, the BSI behind the fuse board is not communicating with the ECU properly, Im afraid it is the ECU

Hold your horses indeed. If you read one of the OPs comments, the code reader would not connect to the car. This doesn't necessaily mean the ECU is bust. My ELM327 based code reader does not connect to my perfectly fine ECU, unless the car key is in position 1 (or maybe position 2, can't quite remember).

 

[atom0007]

I bought a code reader of ebay or gumtree if i recall correctly, i connected it and it kept just saying linking error when i had my keycode light on, when i bought my new ecu etc it started reading my codes fine! I would put a good £100 on this being the ECU fault!

Can I take you up belatedly on that ?

Just read the resolution on this thread

 

[s and b]

Can I take you up belatedly on that ?

Just read the resolution on this thread

the oldman in post 2 got it
he just suggested the wrong earth

so i claim my £100

i thank you

 

[atom0007]

Split it?

 

[bigbrava]

before you deside to scrap it,sell it or whatever you decide, one last try would be this.... disconnect the battery red live then...

1) get a can of electrical cleaning spray from halfords
2) take off the two big wire plugs off the ecu.
3) spray the inside of the plugs and use lots and lots so its dripping in it
4) do the same again with the ecu sockets that the plugs came out from again untill its dripping in it.

Leave for about half an hour then re attach the plugs into the ecu the re connect the battery red live lead. hopefully your problem may or may not go away but its worked on my brava as i had the same symptoms as your getting and mine has been ok ever since doing the above.:slayer:

 

[Ziggy122]

Hi got car fixed today, turned out it was a broken earth cable that went to the engine, am thankfull that it wasn't worse.

before you deside to scrap it,sell it or whatever you decide, one last try would be this.... disconnect the battery red live then...

1) get a can of electrical cleaning spray from halfords
2) take off the two big wire plugs off the ecu.
3) spray the inside of the plugs and use lots and lots so its dripping in it
4) do the same again with the ecu sockets that the plugs came out from again untill its dripping in it.

Leave for about half an hour then re attach the plugs into the ecu the re connect the battery red live lead. hopefully your problem may or may not go away but its worked on my brava as i had the same symptoms as your getting and mine has been ok ever since doing the above.:slayer:

Little Slow
Earthing issue as the old man in the rocking chair has said

Ziggy