KTM-EXC Posted August 31, 2006 Share Posted August 31, 2006 I will start by saying I am very young and have no experience with this sort of thing and I am especially bad with computers. I purchased everything preassembled from DIYautotune and have the PCB3.0. I havent even installed it in the car and Im already having trouble. I am just trying to test out megatune and use the stimulator to make sure everything is working. My problem is I have no communication with my laptop and the ecu. I have a serial cable(from DIY) hooking them together, I have the stim hooked up with a 9v battery. ON the ecu the first light is flashing the middle is solid and the last one on the right is off. When I actually try to open megatune a notice comes up that says something like... "The selected Communication port (COM1) couldnt be opened. To Fix this click communications-> settings and change th port, he click File-> offline to connect to your ecu" WHen I get into megatune I tried com1, com2..... and it says there is no connection. I followed the MSnS extra setup guide on the MSefi website. I searched on the MS forums and there is so much information that I dont know were to start. I WOuld greatly apreciate any help. Thanks Rob Quote Link to comment Share on other sites More sharing options...
mobythevan Posted August 31, 2006 Share Posted August 31, 2006 I have problems on my computer because hotsync is always running and using the comm port (for PDA device). So I always have to close it first to free up the comm port. You might check to see if you have other programs running that are using it. Quote Link to comment Share on other sites More sharing options...
olie05 Posted August 31, 2006 Share Posted August 31, 2006 perhaps the serial cable is faulty? Check the bounceback with hyper-terminal. Quote Link to comment Share on other sites More sharing options...
mobythevan Posted August 31, 2006 Share Posted August 31, 2006 Also, since Olie05 mentioned it, make sure you have the correct serial cable, straight through or crossover, I always forget which one is correct(check megamanual). Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted August 31, 2006 Share Posted August 31, 2006 If this is a laptop I would make sure your serial port is even enabled. Right click on My Computer, hit Properties, Hardware Tab, Device Manager, and go to the Ports tree and see if you have a COM port listed. Mario Quote Link to comment Share on other sites More sharing options...
olie05 Posted August 31, 2006 Share Posted August 31, 2006 oh yeah, make sure your battery is putting out at least 7.5 volts... anything lower will start doing funny things. Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted August 31, 2006 Author Share Posted August 31, 2006 I apreciate all the help, I didnt expect this many responses! I actually did have HOtsync running but after closing it, still no luck.(I just loaded the palmTune software on my PDA) Iv now gone through and tried everything you guys just listed. The serial port was working with my PDA, so thats good, the cable is from DIYautotune so I would hope its the correct one. I looked in the megamanual and it says I need a "straight through" not sure what that means though. I opened the task manager and nothing apears to be running that would use that. Mario, I went through what you told me to and I think its all set, if it worked with my PDA does that mean its all set? I ran throught the list of things on this website.. http://www.megasquirt.info/connect.htm and since I am so bad with computers, a lot of it doesnt make sense. I have a couple of really dumb questions.. Is the firmware already loaded into the PCB board? I dowloaded the latest MSnS extra frimware and went through the download instructions but when it finally came to downloading it, it said something about a boot jumper? After searching I think I figured out what that is but Im not sure if its something I need to do? I think my problem may be with when I downloaded everything, I probably messed something up. I keep going over everything on the Megasquirt websites but theres so much information its hard to take it all in, especially at my age. Again thanks for all the help and sorry for all of the stupid questions, Rob Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted August 31, 2006 Author Share Posted August 31, 2006 Olie, the battery is brand new, how would I go about checking how much voltage it is putting out? THanks Quote Link to comment Share on other sites More sharing options...
Metro Posted September 1, 2006 Share Posted September 1, 2006 When you first upgrade MS to MSnS you have to short out the boot jumper when you go to reflash the firmware. You'll have to open up the case and place a wire or resistor, anything to connect the two holes on the boot jumper. It's located right next to the processor, above the test area on the v3 PCB. Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted September 1, 2006 Author Share Posted September 1, 2006 Metro, thank you, I will try that tomorrow, I have one more question on my ECU below the hook up for the wiring harness, there is some kind of hole with a plug looking thing in it(I know, great description). Does anyone know what this is? Thanks Rob Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted September 1, 2006 Share Posted September 1, 2006 Do what I said again, but then go to the Port Settings Tab. Megasquirt needs the following set: Baud Rate 9600 - MegaSquirt 115200 - MegaSquirt-II Data Bits 8 Stop Bits 1 Flow Control None I think you are referring to the MAP sensor. You will have to runn a vacuum line to the ECU box wherever you decide to place it. Mario Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted September 2, 2006 Author Share Posted September 2, 2006 Mario, thanks.. I checked everything and it is exactly as you listed. I am going to delete everything and start from scratch, maybe I messed something up along the line.. Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted September 2, 2006 Author Share Posted September 2, 2006 Wow do I feel stupid... In the Megatune configurator I had it setup for MSNS extra but didnt have the extra firmware. And now I know how to load in the Extra code firmware after reading this... http://www.diyautotune.com/faq/troubleshooting_megasquirt_communications.htm#ms1flash ALl the guides on the MS website were a little to confusing but that was easy to read. THanks again for your help, Rob Quote Link to comment Share on other sites More sharing options...
z-ya Posted September 8, 2006 Share Posted September 8, 2006 Rob, If you need help getting MT working and the correct formware loaded, send the ECU along with the harness. Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted September 10, 2006 Author Share Posted September 10, 2006 Rob, If you need help getting MT working and the correct formware loaded, send the ECU along with the harness. thanks, I sent that out with it. Quote Link to comment Share on other sites More sharing options...
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