1995 OBD1 Diag tool
#16
Originally Posted by Sumtoc
So if I understand it this consists of 3 parts, the Scan Tool SW, the Txt file and the interface as shown in your circuit diagram? If so, we have access to all but the interface. Would you be able to build that for us? Certainly willing to pay ya for your time and the materials.....
Replace the scantool.cfg file with my scantool.txt file
Rename scantool.txt to scantool.cfg
I built the circuit as shown and it works. You could build it.
Or you could buy one of the units being used in the 964 thread.
I don't see value in making pcb, etc for my circuit, since others are already
available. My design is definitely not worst case. It is least components
and still works case. :-)
Ray
#17
Originally Posted by cowtown
raycm, what a great post! I've read through your update a couple times, and I think you're saying that you can clear codes but not get all the value readouts yet, correct? Is it just a matter of getting the cfg setup correctly?
I'm going to throw together your circuit over the next couple weeks and give it a shot. Thanks, and please keep updating!
Colin
I'm going to throw together your circuit over the next couple weeks and give it a shot. Thanks, and please keep updating!
Colin
also be cleared. The other stuff Inputs, Actual Values, etc have some things
working and some not. I believe more can be made to function.
When you press the Input button. The tool queries the DME. The DME responds.
The scantool.cfg file tells the scantool how to display this data.
Ray
#18
Originally Posted by brucec59
Would this allow me to clear that stupid airbag light?!?
It reports Airbag codes. The code reported will tell you what is wrong.
There is a button to clear any codes stored.
Ray
#19
Originally Posted by John H
I have no idea what you guys are talking about. Are you saying I can buy a cable for my laptop, download the software and that would let me see and clear codes off my car's DME?
BTW, I am tech savvy
BTW, I am tech savvy
The circuit is used to convert the RS232 serial port interface into OBD
interface.
#21
Racer
Nice to see that the 993 with early obd1 works with the software. What we need now is someone with software background to complete the software. Get the idle adaption working and the other bits that the hammer does!
All thanks should go to DOUG BOYCE who is the originator of the software. Without which the rest would be junk.
All thanks should go to DOUG BOYCE who is the originator of the software. Without which the rest would be junk.
#23
Technical Guru
Rennlist Member
Rennlist Member
Originally Posted by Laurence Gibbs
Nice to see that the 993 with early obd1 works with the software.
#24
Addicted Specialist
Rennlist Member
Rennlist Member
This is really intriguing! Keep us posted as I would most certainly like to come in on this once all the details have been worked out. Kudos to all you taking this on!!!
Edward
Edward
#25
Work with all 993
Originally Posted by JasonAndreas
It should work (unchanged) with the control units for all years of 993 not just MY95.
I had to put jumpers in my circuit to change where the wakeup goes
and where the response comes from, as well as address and baudrate.
These were changes from 964 to 993. Since the 1996 had to be OBD2
compliant I wonder if there might be other tweaks?
Ray
#26
Technical Guru
Rennlist Member
Rennlist Member
Originally Posted by raycm
I had to put jumpers in my circuit to change where the wakeup goes and where the response comes from, as well as address and baudrate. These were changes from 964 to 993.
Originally Posted by raycm
Since the 1996 had to be OBD2
compliant I wonder if there might be other tweaks?
compliant I wonder if there might be other tweaks?
#28
Rennlist Member
I'm trying to workout something with Durametric Software for a release of an OBD1 program and connectors.
The two main problems seem to be that some 95's had OBD1 and others had OBD2 style connectors
and also the Motronic version was different most Motronic 2.1.1 or just 2.1 version of some sorts.
I'm sure the package should be released in June 06 sometime. I looking forward to having a full diagnostics software
that is accurate and that you don't need to guess what the right number is suppose to be.
I would like it to be as close to the capabilities of the Porsche diagnostics computer and to show the same results. Chris
The two main problems seem to be that some 95's had OBD1 and others had OBD2 style connectors
and also the Motronic version was different most Motronic 2.1.1 or just 2.1 version of some sorts.
I'm sure the package should be released in June 06 sometime. I looking forward to having a full diagnostics software
that is accurate and that you don't need to guess what the right number is suppose to be.
I would like it to be as close to the capabilities of the Porsche diagnostics computer and to show the same results. Chris
#29
Originally Posted by cowtown
raycm, any updates?
I started on the circuit board last night - any component changes since your Rev1 diagram in your first post?
Thanks,
Colin
I started on the circuit board last night - any component changes since your Rev1 diagram in your first post?
Thanks,
Colin
The interface talks to all controllers at rev 1.
Let me know of your results.
Ray
#30
Originally Posted by c993k
I'm trying to workout something with Durametric Software for a release of an OBD1 program and connectors.
The two main problems seem to be that some 95's had OBD1 and others had OBD2 style connectors
and also the Motronic version was different most Motronic 2.1.1 or just 2.1 version of some sorts.
I'm sure the package should be released in June 06 sometime. I looking forward to having a full diagnostics software
that is accurate and that you don't need to guess what the right number is suppose to be.
I would like it to be as close to the capabilities of the Porsche diagnostics computer and to show the same results. Chris
The two main problems seem to be that some 95's had OBD1 and others had OBD2 style connectors
and also the Motronic version was different most Motronic 2.1.1 or just 2.1 version of some sorts.
I'm sure the package should be released in June 06 sometime. I looking forward to having a full diagnostics software
that is accurate and that you don't need to guess what the right number is suppose to be.
I would like it to be as close to the capabilities of the Porsche diagnostics computer and to show the same results. Chris
The round connector of the earlier 993 has different pin assignments.
I believe the pin assignment is the only difference to getting the tool to
function.
The tool tells you what motronic interface is installed. You don't need to
enter any information to get all reports in my first email of this thread.
This tool works on 964 and later 1995 993. No reason it wont work on
earlier 1995 993. The 964 has the same connector as early 1995 993.
I suspect that most 993 owners would buy a complete functioning setup
at a reasonable price.
I made a short cable. Pins that plug into either round or OBD2 connector.
The other end has a ribbon cable connector. I leave this connected to
my OBD connector.
Plug in a ribbon cable that's connected to the interface, and I'm all set.
I didn't buy any special connector. I can put the laptop on the bench or in
the car.
Ray