Team-BHP - Cracking the Da Vinci "TATA Safari 2.2l" ECU Code

Quote:

Originally Posted by sun (Post 1447146)

As I said before, I had seen the TATA service personnel in action on my Safari 2.2 l. On the hardware connector was written ISO 14230. That should be the protocol.. right ?

Hope this was useful.

Since my scan tool [ELM 323] is compliant withISO14230, the PCM Scan should have recognized it.....Am i missing out on any settings....Will post the screen shot of the error shortly...

Note from the Team-BHP Support Team : Please take the time to use proper punctuation as per Team-BHP rules. Avoid...typing...like...this. Thanks.

Quote:

Originally Posted by svdath (Post 1446606)

Dadu,
Tried using the PCMScan trial version..>It was able to recognize hte ELM323 scanner..But it then gave a error message that the protocol was not recognized. :Frustrati Is TATA using its own propritery protocol. I thougt it was a ISO-9141-2. Also, when i connet the ELM323 to the OBD connector, i get one red led light on the scan tool, but there is one more which does not glow, is that a problem? I bought mine from Car PC Systems | Vehicle Infotainment Solutions | iRide Technologies, Mumbai, India

Also, is there a way to find out what is the protocol by some AT command? I keep getting the BUS INIT.....ERROR message:Frustrati

It uses ISO 14230-4 (KWP2000 FAST) protocol.

Connect using Hyperterminal with the following :
Set Bits per second to 9600
Data Bits to 8
Parity to None
Stop bits to 1
Flow Control to None

Type 'ATZ' and hit enter, what do you get ??
Type '010C' and hit enter, what do you see ??

Quote:

Originally Posted by dadu (Post 1447261)

Dadu,
Still no luck:Frustrati I have attached the screenshot.Is there any other setting that i need to make?

Quote:

Originally Posted by sun (Post 1448295)

your indica vista is Quadrajet or with TATA engine ? If its Quadrajet, then may be it has some FIAT protocol ?

Its the Quadrajet running the Fiat 1.3 MJT. I googled and saw that Fiat also followed the ISO protocols. Now i am in a confused state whether there is problem with my OBD connector:Shockked:

Quote:

Originally Posted by svdath (Post 1448404)

Its the Quadrajet running the Fiat 1.3 MJT. I googled and saw that Fiat also followed the ISO protocols. Now i am in a confused state whether there is problem with my OBD connector:Shockked:

Yours is an older version of ELM-323, current is 327, do the following on the hyperterminal,

- Turn on the Ignition and Set the protocol to Auto by typing ATSP0 (last digit is zero) and then issue a 0100. if it doesn't respond its a non-standard OBD ECU.
- When it responds check the protocol by typing in ATDPN.
- Whatever number is returned now type in ATSP N (where N is the number the previous ATDP command returned)
- Now type in ATMA and post the results. :)

Quote:

Originally Posted by svdath (Post 1447252)

Since my scan tool [ELM 323] is compliant withISO14230, the PCM Scan should have recognized it.....Am i missing out on any settings....Will post the screen shot of the error shortly...

ELM323 supports: ISO14230-4 (KWP2000) ISO9141-2

ELM327 supports: ISO15765-4 (CAN) ISO14230-4 (KWP2000) ISO9141-2 J1850 VPW J1850 PWM

So if the vehicle ECU needs other than the ELM323 protocols, it will not work.

Quote:

Originally Posted by dadu (Post 1449424)

Dadu,
It looks like i will need to go for the ELM327. I have attached the screen shot of the auto protocol setting. This itself did not go through.:Frustrati But do you think that me going for the ELM327 would solve the problem. Is there a one where I can test and then go for buying it?

I've had my go at Palio MJD with my ELM327 and it simply doesn't work. Always say "Unrecognized Protocol" or something similar.

Later learned from FIAT forums that FIAT uses some proprietary protocol which requires special SW.

Good luck to you! It would be a pleasant surprise if it ever works on Vista MJD.

Quote:

Originally Posted by svdath (Post 1449585)

Like I said earlier, it seems like a non-compliant OBDII ECU, usually Fiat should use ISO only. You can test with someone having ELM327 before opting to buy.

Fiat (old) uses the ISO 14230-4 KWP fast init for communication with ECU. But the langguage it speaks is very different from OBD-II or EOBD. I have had some success in communicating with my Petra ECU through hyper terminal. I could not make a program as I do not understand software code so much.

However, I thought new MJD engines complied to EOBD standards! I am surprised it doesn't!!!

Quote:

Originally Posted by DRC (Post 1451560)

Can you let me know what were the commands you used with Hyper terminal and also what was the connector you used - ELM 323 or ELM 327?

svdath, I inquired with TATA personnel today, Fiat indeed uses different protocol. They have different hardware to connect to quadrajets and 1.3 Fiats. Even the software is different, though he did not mention which :).

Quote:

Originally Posted by DRC (Post 1451560)

I used a ELM327.
The sequence of the commands were too long and clumsy (atleast for my laziness). Please PM your mail ID, I will send some scatch pad which I made while trying to decode. If you can write some code in c# and live in bangalore, we can put together a program to do this job.