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Old 19th April 2010, 17:26   #1
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Arrow Reliable Fiat ECU scanner

Fellow BHPians,
I had been restlessly searching for a reliable ECU scanner tool ever since I was duped by one of the Bangalore garages. Meanwhile, I also tried to decypher the protocol and was able to access the ECU parameters to some extent.
Recently I came across this site ( FiatECUScan - Fiat, Alfa, Lancia ECU Reader / Scanner) with free tool specially designed for Fiat vehicles. I tried it immediately with ELM327 hardware and it works like a breeze. I am able to see all the vital statistics in almost real time, read and clear DTCs also, set up for adaptive learning!!!

I am in no way associated with this site, either commercially or otherwise, but hats off to the guy who made this software!

If you try this software please post your experiences (of course at your own risk). It would be interesting to know!

My experience, to start with,
1. After triggering the adaptive learning, I have seen great improvement in drivability
2. Some how, odo reading in ECU does not agree with cluster, cluster is about 5K more!!! I suspect fishy dealer when i bought the car.

Mods: I felt this subject needed a new thread. I have searched the forum, but found none to discuss the experiences of toying around with ECU scanner
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Old 19th April 2010, 17:43   #2
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it will be great if you can upload some pics! Where did you get the ELM327 hardware? Did you get the free software tool?

What can go wrong if i fiddle around with it?
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Old 19th April 2010, 20:19   #3
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Just went through the list of supported cars. No support for Linea. Long list of Puntoz, but can't see the model specific to India. 1.3 JTD listed here is with Delphi Electric Steering and automatic transmission.
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Old 19th April 2010, 21:58   #4
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This software is nothing specific to India. Even on my Petra 1.6, I could not find support for Petra, but there are many cars with 16V 100 engine. I tried Brava and palio. More importantly, IAW 4AF was supported.

When I connect, I get a warning stating ISO code mismatch, which means, there is no exact homologated part number supported by software, yet it works if I ignore the warning.

You can try selecting the 1.3 MJD engine in any car.
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Old 20th April 2010, 08:54   #5
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Great job DRC. Please clarify the following:

Where did you buy the ELM327 hardware from? Does the connector match the one available on Fiat ECU's?

Any pictures of the equipment and links to the product you have would be greatly useful.
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Old 20th April 2010, 09:34   #6
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Fantastic! At 50 Eur, its not costly either. Besides the free stuff includes a lot as well.

My only concern is the same as Planet. What can possibly go wrong? Besides, how is this different from a regular scanner used in A.S.S?

Real good find!
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Old 20th April 2010, 09:56   #7
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Quote:
Originally Posted by JVH View Post
My only concern is the same as Planet. What can possibly go wrong? Besides, how is this different from a regular scanner used in A.S.S?
I don't think there is anything that could possibly go wrong since this is just a reader for the memory in your ECU plus you cannot alter any values as far as I know from their forums.

I plan to purchase a licensed copy once DRC puts up images of the connectors and cables used since the ELM 327 cable will need an adapter to connect to the Palio ECU from what I can see as it doesn't have the 16 pin connector interface. I could be wrong. Waiting very eagerly. Should solve a lot of my miseries.
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Old 21st April 2010, 11:16   #8
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Quote:
Originally Posted by moralfibre View Post
Great job DRC. Please clarify the following:

Where did you buy the ELM327 hardware from? Does the connector match the one available on Fiat ECU's?

Any pictures of the equipment and links to the product you have would be greatly useful.
I bought the ELM327 tool from e-bay

I have not taken pictures, will sure work on this weekend and upload

Also, I think it is better to use a vagcom cable rather than ELM. I used ELM because I had it since ages. And Vagcom cables are cheaper too.

There are not many things that can go wrong I suppose. Each test/actuator/scan has a summary and help on the right hand side of the pane. it is helpful and warns about the effects and consequences.

Getting a cable to work is a little tricky. You got to find the ISO9141 interface in the 16 pin OBDII connector and plug it to ECU port white wire. also, connect battery cables on OBDII connector. A simple google will get you the pin details of the OBD connector.

Last edited by DRC : 21st April 2010 at 11:22.
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Old 21st April 2010, 11:57   #9
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I am still badly confused. I remember very clearly that the ECU connector on the Palio is a two pin socket. How did you connect the ISO9141 to this socket? Some product links would be helpful DRC.
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Old 21st April 2010, 12:10   #10
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Here is the pin lay out



Here is the pin description
  1. Manufacturer discretion. GM: J2411 GMLAN/SWC/Single-Wire CAN.
  2. Bus positive Line of SAE-J1850 PWM and SAE-1850 VPW
  3. Ford DCL(+) Argentina, Brazil (pre OBD-II) 1997-2000, Usa, Europe, etc.
  4. Chassis ground
  5. Signal ground
  6. CAN high (ISO 15765-4 and SAE-J2284)
  7. K line of ISO 9141-2 and ISO 14230-4
  8. -
  9. -
  10. Bus negative Line of SAE-J1850 PWM only (not SAE-1850 VPW)
  11. Ford DCL(-) Argentina, Brazil (pre OBD-II) 1997-2000, Usa, Europe, etc.
  12. -
  13. -
  14. CAN low (ISO 15765-4 and SAE-J2284)
  15. L line of ISO 9141-2 and ISO 14230-4
  16. Battery voltage
So, connect Pin 4, 5 of the OBD cable on ELM to Bat -ve, connect pin 16 to Bat +ve and connect pin 7 to whilte wire on the 2 pin socket (ECU port) on the car.

The other pin on the car's ECU port is ground.

Hope this helps

PS: Praying copy paste don't mess up!... and it did

Last edited by DRC : 21st April 2010 at 12:13. Reason: copy paste mess up
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Old 21st April 2010, 12:18   #11
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Thanks DRC. Time to order an ELM / VAGCOM cable. Thanks for the details. Appreciate your patience.
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Old 21st April 2010, 15:26   #12
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didn't get a thing about the pins! Please upload some pics giving step by step connections to be made.

i thought it was as easy as - connecting a Laptop to a mobile phone!
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Old 22nd April 2010, 11:41   #13
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Here are some useful links for Fiat specific products you might be interested in plus some tech info. I am still not sure which ELM cable to buy. Would prefer a local vendor if available.

General: Diagnostic tool for Brava - The FIAT Forum

https://www.scantool.net/forum/index...Bthreadid=1745

http://www.fiatforum.com/attachment....2&d=1225100192

Elm Electronics

Professional Fiat/Alfa/Lancia Diagnostic Software for PC
Screenshot
Vehicles supported by FiatDiag

eBay.com.my: MUST HAVE > ELM327 OBD Diagnostic Cable (item 160425505930 end time Apr 28, 2010 01:17:38 MYT)

Fiat specific cable for OBD:
Motorscan Technologies USA

And if you have the dough, go for this:

fiat examiner smart

Fiat Examinmer Smart HD
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Old 22nd April 2010, 18:44   #14
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May be a very noob question, but would it be possible to remap the ECU with this ?

Also I see my Fiat Uno 1242 in the supported vehicles but don't know if its the SPFI or MPFI version. can anybody help?
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Old 23rd April 2010, 12:13   #15
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Quote:
Originally Posted by MileCruncher View Post
May be a very noob question, but would it be possible to remap the ECU with this ?
I doubt that. You could post a question on their forums.

Quote:
Also I see my Fiat Uno 1242 in the supported vehicles but don't know if its the SPFI or MPFI version. can anybody help?
I am buying the licensed version of their software once I receive the cables I ordered:

ELM327 1.5

OBDII cable extension.

Will try it out and let you know.
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