That is similar to the Euro ECUs, the OBD1 port is used for programming and for actuator testing but there is no support for live data on that port. I had a hard drive failure last week and I'm still operating on limited back up systems. I will get the Swift ECU back up and running on the bench and run some tests on that, I also have access to an Alto with KWP2000 as well. I'm sure that we will be able to get the data from the OBD2 port using the ELM tool, we just need to determine the correct commands to send.
The SDT tool is Chinese clone - I'm tempted to buy one but I'm concerned about the reliabilty of it and how much support it has for non-US markets.
Bummer on the hard drive crash. I have raid and at least one had drive has to crash once a week so they rebuild themselves quite offten.
I think the ELM has issues communicating as its not standard OBDII, it uses the KWP2000 Handshake but then uses Specific suzuki commands.
I managed to bypass all the ELM stuff and talk directly to the ECU, i then got back data but I dont have the brain capacity or time to work it all out at the moment.
I found this info on people who are hacking the HyBUssa ECU which seems to be very similar, eg OBDII but only on connection they found these commands.
10 Start comunication
11 ECU Reset
12 Read Freeze frame data
13 Read Diag Trouble codes
17 read status of diag info
18 read diag trouble codes by status
1A read ECU ID
20 Stop Diag Sesion
21 Read Data by local ID
27 Security Access
34 Request Download
35 Request upload
36 transfer data
37 transfer exit
3E Tester Present
81 Start Communication
83 Get Timing Parameters
85 Get Timing mode.
I am a member on that board but I don't visit too often, I was working with Psyche on developing the tools for reflashing the 16-bit bike and car ECUs so I didn't take much notice of the serial link stuff once it was ascertained that it was different to the car stuff I was working with. It looks to be a definite possibility and the era is right too.
I didnt write down what i got from my ecu apart from what i sent you earlier.
I will have to attempt it again. Being a chinese nock of elm327 it doesnt support all its features so its a bit limited. from memory i sent the start communication sequence and got back data which was simalar to what i was ment to get back acording to the Suzuki SDL/KWP document.
I'm looking over their logs now, what I do see is that they are using the length byte in their comms, I don't think that the ELM tool supports that, also the ECU address they are using is 12, not 01 or 11, those seem to be the main differences.
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