Technical ASR Failure Loose Connection [ECU defective?]

[sasha015]

I have same problem,since i bought car.Try everything.D4,battery, clean all ....Nothing helps.
99% is ecu.
Yesterdey i pick up my repairing ecu.2 days,since march,no mistake,no beep no cut out in trafic.....I will hope that this solve my problem but if "asr failure returns",first thing what i will do-sale the f... stilo and buy new car.
5 months im loosing conection,and my nerves.
You have to repaire your ecu.Nothing ellse wont solve your problems.This "asr failure,loose conection" is common mistake on 1.6 16v.
I think that is factory failure.Here,on the forum,there is some post since 2002-03.Brand new stilo has this mistake...:worship:

 

[crnisale]

Reballing ECU processor

 

[bogdanvtt]

Have the same problem for 4 months,since i bought car.Examiner says its everything ok.I check battery,engine earth,change break light switch and problem is still here.It just cut me of while im driwing,and turn off engine.today wont start finaly,after 1 minut since i start engine he cut me of.Seys asr failure,car security falure.I tray and tray for 15 minutes and finaly engine starts and now work fine....
do no what to do...burn the car,sell it....:bang::bang:
It never cut me of on highway,only in town,in first 5 -10 minutes driwing.Yesterday a drow 60 miles and everything was just fine,but today in 100m he cut me 2 times,and finaly for the first time wont start,cos first time with asr failure says car security failure.try with 2 keys,same sh...

p.s.sory for bad english....but i think all of you will understand....

Hello, same problem here...
but even worst, after the cut out angine, i cant start it. The Car Security (that lock) goes on and off, asr light is on, and another triangle yellow apears next to the lock. The car wont start, and from a while- it takes 20-to 1 hour to restart.
I did sprayed all contacts, checked the bathery, sprayed the senzor for rotation... but i`m getting nowhere, still stops when she wants.

i tooked it to a test, and it revealed this problem :
U1601 - Errore Linea C-CAN

can anyone happend the same/got some answers.
Thx

 

[Deckchair5]

U1601 is a general can line error which is not very helpful but that will almost always be caused by a bad connection / open circuit

You have security failure warnings too though so that's ECU to body computer and the engine stops

So I'd be looking at can line or earth bad connections at the ECU connector, is the ECU hot to touch?=poor earth. Does simply moving the ecu connector or waiting for it to cool down cure your problems? Poor connection at the ECU is quite common as it gets a lot of movement/ stress there

Of course, the poor connection or open circuit can be inside the ECU and that's where reballing comes in

 

[AudiDynamic85]

Cruising Down The M6 & My Car Shuts Down

First of all Hi All,

My Car: 2002 Fiat Stilo 1.6

Problem: Intermittent Shut Down

Error Messages: Loose Connection, ASR Failure, Engine Management Light & Airbag Light Have Been Permanently On Shortly After Purchase

Yes low and behold I'm cruising down the M6 and my car completely shuts down, rather than pull over I automatically engage neutral and re-start and the car roars back into life.

The reason for me automatically re-engaging the engine is simple, practice makes perfect, this happens generally every day and you may question why I haven't attempted to sort it out, well first of all I'm not sure where to start, first trying to find a half decent garage knowledgeable about Stilo's in the West Midlands, or a mechanic who wont scracth his head wondering what do do or tell me, or wants to charge the odds to tell em about the error messages is no fun.

Having a look through the forum i have managed to sort out the idling problem by cleaning the inlet valve with some WD40, worked a dream only for this problem to now be a bane of my existence.
I suppose i will have to bite the bullet and take it to a garage (please recommend any in the West Midlands area) to find out if their machines can detect the fault.

Just wanted to test the waters to see if any of you have experienced the same problem and found a solution.

Many thanks in advance.

 

[Yellow Peril]

Re: Cruising Down The M6 & My Car Shuts Down

I'm sure Decks will be along soon to offer a more technical answer, but are you sure your battery is healthy? Many owners on here have experieced numerous random error messages and other wierd faults until they replaced their batteries (more powerful the better). Just a suggestion...

 

[Adrian09]

Re: Cruising Down The M6 & My Car Shuts Down

Theres a fiat specialist in Birmingham city centre http://www.motor-mech.co.uk/general-info.html 30 seconds from the Bullring

 

[AudiDynamic85]

Re: Cruising Down The M6 & My Car Shuts Down

Theres a fiat specialist in Birmingham city centre http://www.motor-mech.co.uk/general-info.html 30 seconds from the Bullring

Thanks for that Adrian, have you used them yourselves, considering giving them a call to book the car in, the website looks down to earth, shall i say you recommended me...might offer me a discount eh lol, recently purchased some replacement Mintex pads/disk's after scouring this website for reasonable replacements at reasonable price, so maybe he could fit those and the battery.

@ Yellow Peril, there hasn't been any evident problems identified which suggest an inefficient battery is at fault, then again i haven't changed it since purchase so that could be a start.

@ PNL, definitely want to get a diag, just looking to go a garage that are competent enough to locate a fault and provide a solution

 

[AudiDynamic85]

Re: Cruising Down The M6 & My Car Shuts Down

Theres a fiat specialist in Birmingham city centre http://www.motor-mech.co.uk/general-info.html 30 seconds from the Bullring

I'm sure Decks will be along soon to offer a more technical answer, but are you sure your battery is healthy? Many owners on here have experieced numerous random error messages and other wierd faults until they replaced their batteries (more powerful the better). Just a suggestion...

Deckchair the legend that you are, could you spare a moment, it was due to your guide i manged to sort my inlet valve, must say i haven't managed to secure the butterfly clips after though, it is safe though (i think maybe i should take a look)

 

[Deckchair5]

Re: Cruising Down The M6 & My Car Shuts Down

Error Messages: Loose Connection, ASR Failure, engine management Light & Airbag Light Have Been Permanently On Shortly After Purchase

All of these have been permanently on since you bought the car?

How long have you had the car?

Loose connection, asr failure and engine management happening when the engine dies would make more sense. Can you clarify what you see?

Well worth buying a cheap fault code reader to find out what fault codes are stored if any. It's the first thing a garage is going to do and charge you a pretty penny for doing so. Beat them to it and see what the car is telling you but don't erase fault codes without making a note of them first

 

[fran7802]

asr failure - security error - loose connection

Hi All,
Ive got a fiat stilo 1.6.16v 2001, the car started giving me problems a while back, it didnt want to start and then after trying a few times it started, until it didnt want to start at all, took the car to fiat ,they said the ecu needs to be replaced, i then found an ecu myself, a selfcoding one. the car now still dont wanna start and the people where i bought the ecu from says i cant return it, so either fiat was talking crap and wanted to charge 850€ for something simple or the new ecu just doesnt work!!! has anyone got any idea´s what it could be or what i could try!!!

 

[A3jeroen]

Re: asr failure - security error - loose connection

Battery Ok?

gr J

 

[sasha015]

Re: asr failure - security error - loose connection

First you could try to repair your old ecu.And that will 99 % solve your problem.In fiat garage they never do that.All they can do is to sell you new one for 800 euro.Repair is cost 200e here(Serbia) and car is like new.No more asr failure,security failure-loose connection in my stilo:slayer:No more any mistakes and beep,beep,beep

 

[fran7802]

HI ALL

Ive had the same problem, asr failure, loose connection and security error.....fiat said my ecu needs replacing, so i got a ecu from lynx automotive in uk, fitted it and the car would still not start, then i turned the key to the notch just before car start, pressed asr button on off en then turn key back and then turn key start, started the car, car has been driving fine, but today whilst driving errors returned and car stalled........so this tells me ecu is not faulty....mmmmmm its driving me nuts!!!! im just reluctant to take car to fiat and fiat charges me a fortune for something simple....

 

[Argonought]

Ive had the same problem, asr failure, loose connection and security error.....fiat said my ecu needs replacing, so i got a ecu from lynx automotive in uk, fitted it and the car would still not start, then i turned the key to the notch just before car start, pressed asr button on off en then turn key back and then turn key start, started the car, car has been driving fine, but today whilst driving errors returned and car stalled........so this tells me ecu is not faulty....mmmmmm its driving me nuts!!!! im just reluctant to take car to fiat and fiat charges me a fortune for something simple....

Apart from ECU you haven't told us what else you've done that's been mentioned in this thread.

EDIT: Now merged with a bigger thread so would suggest anyone interested should read from 1st post

 

[AudiDynamic85]

Re: Cruising Down The M6 & My Car Shuts Down

Error Messages: Loose Connection, ASR Failure, engine management Light & Airbag Light Have Been Permanently On Shortly After Purchase

All of these have been permanently on since you bought the car?

How long have you had the car?

Loose connection, asr failure and engine management happening when the engine dies would make more sense. Can you clarify what you see?

Well worth buying a cheap fault code reader to find out what fault codes are stored if any. It's the first thing a garage is going to do and charge you a pretty penny for doing so. Beat them to it and see what the car is telling you but don't erase fault codes without making a note of them first

Been on holiday since I last posted...was in Egypt for 3 weeks.

But yeah decky, all faults identified have been present shortly after car purchase ive had it for nearly 3 years now.

The dash display shows 'ASR failure, airbag light failure, loose connection stop engine'.

But good news, couldn't start the car today, wouldn't turn over called out RAC, and first turn the car started, then died shortly after, he go out his diagnostic and identified 3 faults..i can only remember the map sensor being one.

He said its quite likely its carbonized, so he disconnected and cleaned it. Car fired first time and revs hung 10, settlingg just under 10 after 2nd start, so now i only have the air bag light, no more engine management light, hope it stays t hat way.

Thanks for all your advice i plan to keep my Stilo, may even start modding it lol.

 

[spyshagg]

Re: Cruising Down The M6 & My Car Shuts Down

I have found a way to reproduce the dreaded LOOSE CONNECTION every time I want in my car.



I remind you though i'm not affected by this error, I just found a way to reproduce it.



All I have to do Is connect FIATECUSCAN by Vagcom or ELM327 and let it stay connected to the CAN network for a few minutes. Doesn't matter where. It happened on selespeed ecu, body computer ecu...



After a few minutes BANG. Loose connection and the car wont start!
And I cannot connect to the SELESPEED ECU either! nor does it work! no gears, no pump! But I can connect to other ecu, just no selespeed.



I have to disconnect the battery for a few minutes and everything works again. Everytime!

 

[TK237]

We have the same messages on a 02 1.6 16v Stilo. We have tried resetting using dealer level tools (cheap one dont allways work). We have physically checked the brake switch and all cables between the ecu, bsu and ariel. We have replaced the ECU with a refurbished unit along with new coil packs. We have recoded the key and transponder. The dash is stripped out so we can see that all cables are not trapped or rubbing anywhere, we have also cleaned all the plugs and checked the pin apperturers for corrosion and correct fit. In short we have done every thing we can think off yet the car still gives the same messages, we find that the can pulse into the bsu is present but there appears to be an earth where there should be a pulse, when checking the clocks connection we find the same thing, so we are now going to try replacing all the main units to find out if the error is still there, we suspect the bsu but cannot confirm this as yet. Has anyone out there had similar problems any insight will be appreciated.

Tom :bang:

 

[Davren]

Hi Tom, Welcome to the FF.

We have tried resetting using dealer level tools .

What fault codes did you get?

 

[TK237]

The tools we have used are, Dec Superscan II, Reflex 3130, X431, AD300 European software, ACR 400, AD100 (key programmer) They all give can communication as the problem but the dash display says ASR Failure, Loose connection?. As in previous post we have replaced the ecu twice including the BSI and key and ariel all with the same results. We are now pulling apart all the harness and checking each wire independantly as nothing seems to be wrong apart from the message on the dash display.

Tom