Hey peeps,

Hope this would be helpful to some of you guys! I have basically summerised the long and detailed ECU project thread and got this working for the simple minded like myself!

Basically this will allow you to data log several variables:

- Rev
- Air Temp
- Injector Period
- Pressure (think this takes it from the map sensor)
- Throttle positions
- Ignition Advance
- Voltage
- VAE (not sure what this is)
- Water temp (guess this be good for the seicento SPI that doesn't have a temp guage)

This allows the user to data log all of the above data while driving!

Secondly, this will also records any "ERROR" the ECU brings up (i.e. when the engine management light is on)

What do you need?

• Laptop with USB port
• Fiat 3 pin adaptor to OBD2 cable
• Vagcom USB OBD2 409.1 KKL cable
• Download the Star-Trek Program made by Barnacle
• http://www.nailed-barnacle.co.uk/coupe/startrek/startrek-punto.exe

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Link to buy the Fiat 3 pin adaptor to OBD2 cable

http://cgi.ebay.co.uk/Fiat-Lancia-Alfa-Romeo-3-pin-OBD-2-adapter-cable-B21-/320527984063

Link to buy the Vagcom USB OBD2 409.1 KKL cable:

http://cgi.ebay.co.uk/409-1-KKL-VAG-COM-OBD-2-II-Diagnostic-USB-Scanner-Cable-/230468595000

Procedures

1. Start the car and let the car run for around 60 seconds or so.

2. Plug in the fiat 3 pin adaptor to OBD 2 cable to the fiat diagnostic port:






3. Plug in Vagcom USB OBD2 409.1 KKL cable and connect the crocodile clips to a 12v, either to the car battery or i used an external source.







4. Plug the USB to your laptop and run the star-trek program

Choose the engine you are running this against, I have selected the Punto ECU and eveyrthig worked fine and it gaves reading exactly the same as the dials. Something like this should appear:



5. To start data logging go to Tab "Logging", the choose on like this:



6. This will create a spreadsheet automatically which will log all the data, am not sure what the lag time between measurements but for out purposes I don't think it matters that much.

Error Logging

This is the slightly diffcult bit, as I didn't have a great undestanding on 8 bit binary! But thanksfully Neil (barnacle), takinhg his time and explaining me how to translate the code to locate what sensor is at fault.

You must enable data logging to store the error, in the spread sheet there are 3 Error column:

1. Error 1 Column - Input sensor
2. Error 2 Column - Output Acuator
3. Error 3 Column - System error

Here is the list of sensors for each error column:



I have done some testing on this, I have got the car running and unplugged the charcoal canister. The engine management light came up, and the program logged an error 16 in column 2 - output actuator.

So how do we go from 16 to charcoal canister error ?

This is where the binary problem comes in:

128 64 32 16 8 4 2 1
0 0 0 1 0 0 0 0

So binary for 16 = 00010000 (loads of converter online to do this)

Going back to the error chart i posted, you see 80 40 20 10 08 04 02 01. Really ignore those place the 00010000 in there and the one that has a 1 is the error you are after:

So if you count the fouth error from the left under error 2 output actuator, you should come to charcoal canister error.

Hope this bit makes sense, as I have spent alot of time asking Neil about this and this is the understand i got from it. I could upload the spreadsheet i got from the data logging, but not sure where to upload to on FF?

All credit goes to Neil Barnacle for taking his time guiding me through it and explaining every little details to decoding the ECU error ! Really appreaciate for his time!

Hope this helps
Ming

Information from Neil (Barnacle)

The only comments I'd make on the write up are (a) that you need to clarify that startrek-punto only works on SPI fire engines - basically, punto, 500, 600, Lancia Y from memory. They're listed in the drop down, I think - they all run the same software. And (b) you should really ensure that there is a ground reference between the power (red lead) and the car. There's an earth in the three-pin connector, but ideally the red lead should come off the car battery; otherwise, you can find that you get poor data reliability.

Thanks
Ming

The link to the software doesn't appear to work.

oooooo looks complicated but will this work on the 1.4 turbo punto engine and could you set this up so that if, for example, you went to a track day you could log the way the engine ran and figure out where any flat spots are, or any alterations need to improve the performance of the engine

mariocinq said:

oooooo looks complicated but will this work on the 1.4 turbo punto engine and could you set this up so that if, for example, you went to a track day you could log the way the engine ran and figure out where any flat spots are, or any alterations need to improve the performance of the engine

Click to expand...

It would log temps and faults but anything regarding performance, thats where aftermarket ECU's come into play as you can set them to log everything.

Thanks

ok thanks todger might still be worth doing i will have a think about it but big thanks ming and niel barnacle for the great and informative thread and guide

Kinda does performance, as you could match up your rev with your injector period? Also you know your ignition advance?

I don't know much about tuning, but surely those would help in terms of understanding how the car is running?

And for anyone running turbo, they could figure out at what rev range the map sensor would detect positive pressure? ?

Just some ideas how this would be useful.

Thanks
Mng

Hey Ming,
great work, well done.

Hi ,

can any one let me know if this cable will work on my FIAT PALIO 1.2 , 2002 petrol
i am in india ,

thanks

when i spoke to person that wrote the program it will work with all the FIRE SPI ECU (899, 1108 and 1242)

Ming