In my experience - the baudrate settings in the various ELM software applications relates to the interface between the PC and the ELM chip, rather than the ELM chip and the ECU - the baudrate between the ELM chip and the ECU is not usually left to the discretion of the user.
Even if your vehicle is not OBDII compliant, as long as the vehicle has the J1962 connector with power & ground wired to it, you should be able to get the ELM adapter to respond to the software and give you at the bare minimum a voltage level from the +12V feed - you can even do this with the ELM adapter connected to a computer and a 12V battery (that's right, no vehicle or ECU) to verify that it is functional
Google on ELM and you should be able to locate a pdf document (or give me an email address and I'll send it to you) that gives you an overview of how the ELM chip works and how you can communicate with them - there's enough detail in it to enable you to manipulate the ELM chip interactively through a terminal interface and if you're so inclined, to write your own applications.
-- Edited by fordem on Wednesday 6th of January 2010 12:32:17 PM
i've tried to comunicate thru the OBD2 with ELM323 based device but still no response, i'm going to find out the baudrate issues, the maximum baud of ELM323 is 9.6k, while the ISO9141 sometime listed on web using 10.4 k baud..
If you have an OBD2 port then the SDL interface may not be connected within the ECU. When an OBD2 serial link is present SDL is used for the immobiliser and air bag controller communications, if fitted. Have you tried an OBD2 interface? You should also try the SDL interface at 7812 Baud.
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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine 2000 Suzuki Vitara 1.6 8V, many mods 2004 Suzuki Ignis 1.5VVT 4Grip 2006 Suzuki Jimny 1.3VVT JLX+ and many more.
I've tried to connect to 33920-50j80 with your RhinoPower diag s/w, but it didn't make any response.
- i use the max232 based device (got from http://kick-fix.com/ECU/hacked/ALDL-JTGH1.jpg) instead of your FTDI based device because i couldn't get some of those component. Since the signal converter is work with the same function, i'm sure it will be fine.
- i am sure that my device is working properly, i've checked the output (SDL out) with an oscilloscope, the character which is sending from Realterm software has converted to TTL level with the same signal pattern (tested with 15625 baud)
- Just for your update, that Suzuki made a little bit difference changes for indonesian market (maybe for south east Asia), my escudo (2004) comes with manual, SQ416 model, but no 4 wheel drive. I've checked the diag port and cable and it's found to be the same with overseas model diag port. here is the port pin out : - OBDII SAE 1962 connector - pin 16 --> B+ - pin 9 --> Suzuki serial data line - pin 7 --> K line of ISO 9141 - pin 4 --> body ground - pin 5 --> ECM(PCM) ground
- need your advice to make it work, is it the baudrate issues?
