Technical Hello. Fiat bravo 2 1.4 66kw clima problem - auto air conditioning system not working

[BogdanGeorge]

Hello and thanks for the forum, and congratulations to all members who are here. It's a Fiat helper for European models.

I'll get to the point of the problem.

I am having problems with the Fiat Bravo 2 1.4 66kw Clima. The car was bought new and was made in Italy, but the Clima has the same problems as the Fiat Stilo.

I've searched the forum and found the Fiat Stilo Clima problem, where I found out that the Clima system has 3 sensors: The one on top of the dashboard is the solar sensor, the one inside the dashboard is the anti-pollution sensor, and the pressure sensor is near the radiator (this one I changed with a Mahle 70819098 and it didn't work, and after I bought the original part, a Fiat 51768498, it worked for some time).

The problem is that when it is hot outside, more than 25 degrees Celsius, the clima doesn't start, the frost led on the clima panel doesn't stay on (also, the frost sign on the clima disappears), and afterwards it can't be switched on. Also, sometimes the problem appears in winter or at low-nnormal temperatures outside 10–20 degrees Celsius.


I've attached a video from YouTube with the error; it isn't mine, but the guy there says he fixed the problem by replacing some parts. I don't know what parts because he wrote in Hungarian, and with translation or by search, I can't identify them.

Maybe someone can help; this is an old problem with this Fiat Clima.

I've used MES, and when the climate doesn't stay on, I have two errors that can't be erased:

B1919-defrost sensor

B1902-windscreen flap actuator

When it works, these errors disappear.

Thank you.

Fiat clima problem

 

[sibonios]

Your problem is B1902 Windshield flap actuator B1901 feedback on the windshield motor, ie the motor that directs the air to the windshield, and B1919 is the defrost sensor. Try turning off the defrost sensor in the MES, and secondly, check if your outside air temperature sensor is working properly.

 

[BogdanGeorge]

Hello sibonios and thanks for the reply, after i changed the interior fan, it was very hard to find that fan because its discontinued , but denso model for fiat stilo isn,t , so its the same model from stilo and it has a denso controller attached.
Yeah, i bought that motor for windshield flap but this can t be changed easly, the dashboard has to go down, corectly me please if it can be changed in another way...!
B1919 yes, the defrost sensor is bad, i checked the italian forum , alfa forum and that sensor is easy to find on alfa mito/giulietta , but i can t find it in Bravo( where is that sensor?) but this error shuts down the compressor and there is no cold air from the vents, the snowflake dissapear. I ve used mes , and tried to shut down the sensor but i don t know how , i didn t find any defrost sensor.... I saw in some Stilo that the sensor appear in mes but i didn t find it in bravo. Can i connect in mes with Stilo model? Is there any guide where i can find the defrost sensor in mes? Thank you again for the help. And yes the outside temperature sensor from the left mirror works perfect.

 

[sibonios]

On my stilo, that defrost sensor was accidentally turned on by MES (the physical sensor does not exist on my car) and the air conditioner could not be turned on. When I turned it off, the air conditioner turned on. Try in MES, Body, CAN setup/PROXY Alignment Procedure, Adjustments, Defrost Sensor - must be set to NOT PRESENT.
Must see: https://www.fiat-lancia.org.rs/foru...-fiat-nuova-bravo-automatska-digitalna-klima/

 

[BogdanGeorge]

Again hello. Now i ve searched on google, watching Portugal vs France, i hope we see some penalty action in this match, this guy has Linea and to activate cruise control he changes mes to Stilo 1.9 jtd , where i saw also defrost sensor..... So i ll try to do this from the Stilo model 1.9 jtd, whish me luck, i ll post on this forum if i can do this. Any advices help, thanks again.

 

[BogdanGeorge]

Thanks again, i ve looked there, in MES, Body, CAN setup/PROXY Alignment Procedure, Adjustments, in Bravo there is no defrost sensor...not in 1.4 16v Bravo. But i ll try with the Stilo model, see if it works , i ll check the forum thanks. But i will do it this monday. But the Fiat bravo has this sensor or not? because i ve checked the place where alfa romeo defrost sensor is and bravo doesn t have that sensor in that place, because it doesn t exist, everything is the same in bravo , alfa...maybe also in Stilo. I will attach some photos from alfa forum.italy with the sensor and its location.

 

[sibonios]

I think Bravo does not have a defrost sensor. For example, stilo 1.2 has it. Try accessing via MES for stilo, as you said.

E6020 AIR CONDITIONING (AUTOMATIC AIR CONDITIONING) - Fiat - NUOVA BRAVO - eLearn - 4CarData

 

[BogdanGeorge]

Thanks sibonios, also i forgot to mention, sometimes in the morning the climatronic works , when the outside temp is lower than 25 degrees Celsius, but the error still appears like this: B1919 defrost sensor invalid signal received( and it not a red error) and when is hot outside its a high signal and its fatal. Also i attached some pics from mes with the errors and my sensors from Bravo.

 

[BogdanGeorge]

Update, yesterday i went to a garage, nothing done, just they said to me that the dashboard has to go down, at least 250 euros, and for Bravo is different than Stilo , because for Stilo the actuators could be replaced without taking the dashboard out, Bravo has some metal reinforcements that can t be removed ( they could remove then with the flex but its my liability if something goes wrong ) and yes THEY DON T KNOW WHERE THE SENSOR IS, they presume is in the defroster....or something like that....
So today i reused MES and yes i can select FIAT STILO 1.4 16 V , i can disable the FROST SENSOR but afterwards i have to do proxy ligament for STILO MODEL. I am scarred to execute the function, what if something happens with my bravo , and Ecu and it doesn't respond ?

 

[sibonios]

I don't think anything will break, but I don't know for sure. As for replacing the actuator, everything is explained in the forum whose link I sent you. It's a bit of a long post, but it explains a lot. In MES 4.8 there is no defrost sensor for Bravo '07 1.4 16v.

 

[BogdanGeorge]

Thank you very much for all the help, sibonios, my research will continue, if i will find or do, something usefully , i ll post here. Hope someone who had this error B1919 , from fiat/alfa/lancia will post how they got rid of it....
P.S. I can t search the italian - fiat stilo/bravo forum, it s somehow blocked, i can t sign up, maybe someone from Italy shows us how to search on that forum, or make an account .

 

[sibonios]

https://www.fiat-lancia.org.rs/foru...-fiat-nuova-bravo-automatska-digitalna-klima/ is Serbian forum and is open to browsing without registration, but much is gained by simply registering. Be sure to let me know what you did.

 

[BogdanGeorge]

Thanks again. I ve searched the forum, but no clear answer on how to get rid of the B1919 error on Fiat bravo, and also, automatic translation doesn t work on that forum, i have to do it manualy.
A last question sibonios , when you deactivated the defrost sensor...and run the proxy alignment... The proxy alignment checked every module or only that sensor?

 

[aschiuta]

Thanks again. I ve searched the forum, but no clear answer on how to get rid of the B1919 error on Fiat bravo, and also, automatic translation doesn t work on that forum, i have to do it manualy.
A last question sibonios , when you deactivated the defrost sensor...and run the proxy alignment... The proxy alignment checked every module or only that sensor?

Care este VIN-ul masinii?

This is from eLearn Bravo:

Frost sensor The gas flow rate control system (on the 1.4 16v version) is controlled by an electronic control unit which acts on the compressor solenoid valve depending on the temperature of the evaporator, measured by an NTC type sensor. This type of sensor, known as a frost sensor, is located inside the distributor unit, fitted directly on the evaporator. It measures the temperature of the evaporator and notifies the control unit which, if necessary, switches off the compressor to prevent the evaporator from freezing.

 

[BogdanGeorge]

Salut . Fiat Bravo ZFA19800004084129.

 

[aschiuta]

Salut . Fiat Bravo ZFA19800004084129.

Incerc sa ma uit in eper sa vad daca exista ceva.
Din nou din eLearn:
Se pare ca la 1.4 16 V asta este compresorul folosit.

Scroll compressor specifications - Type SCSB06: - max continuous number of revs: 8450 rpm. - max non-continuous number of revs: 10000 rpm. - scroll radius: 4.58 mm - quantity of lubricant: 50 cc. The compressor is the scroll type with a system that ensures deactivation when the temperature of the evaporator reaches values close to freezing. The deactivation signal is operated by the frost sensor fitted on the evaporator only present on this type of compressor. Scroll compressors have a fixed casing 1 and a moving casing 2. The movement of the camshaft (3) connected to the pulley creates a chamber whose volume decreases during rotation allowing its compression.

 

[BogdanGeorge]

Salut dle. aschiuta, multumesc, credeam ca ai ceva mai special de verificat, am cautat in eper, m-am uitat pe schemele trimise de sibonios, in eper este stilo la modelul asta, e primul bravo.... nu exista clar acel defrost senzor, nu este definit care este exact /unde este.

 

[BogdanGeorge]

Multumesc insa ca te-ai uitat, daca esti din zona cu canicula, atunci te cinstesc cu o bere rece!!!!

 

[aschiuta]

Multumesc insa ca te-ai uitat, daca esti din zona cu canicula, atunci te cinstesc cu o bere rece!!!!

Pai cam toata tara este in zona de canicula. Daca ai codul de la compresor poate cauti pe google si mai afli ceva informatii.
Nu este adevarat ce ti-au spus mecanicii nu se taie cu flexul dar este mult de demontat pentru a ajunge la evaporator.
Insa poti sa cercetezi sa vezi daca este un senzor pe una din tevile de la evaporator sau niste fire , ceva pe acolo.
Eu am 1.6 mjet cu celalalt tip de compresor.

 

[BogdanGeorge]

Incerc sa vad ....cercetez. mulțumesc inca odată, postez aici daca rezolv ceva. Doamne ajută, nu se poate sta in masina cu Soarele asta afară....