Microtech Laptop will not connect while running?
02-25-07, 12:31 PM
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Laptop will not connect while running?
Ive almost finished my ongoing project, GT35R, microtech, with supporting mods. However, when my car is running the micro will not connect to the laptop. It connects fine while the car's ignition is on, and during cranking. But when I start it, the box pops up and says no conection to COM port #1. And after its running if I try to connect I get the same thing.
I have the laptop adapter with a 9-pin to usb adapter. Any thoughts?
-Ben
I have the laptop adapter with a 9-pin to usb adapter. Any thoughts?
-Ben
02-26-07, 09:14 AM
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Interesting. My guess is interference. How is your grounding set up at the Microtech? What about the condition of your ignition wires? Laptop running on battery or AC?
02-26-07, 10:30 PM
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Originally Posted by Aaron Cake
Interesting. My guess is interference. How is your grounding set up at the Microtech? What about the condition of your ignition wires? Laptop running on battery or AC?
Micro is grounded to the drivers side front shock tower, paint is scraped off to bare metal. I cant remember what the laptop was running off, but i think it was AC. Ignition wires are mostly stock, besides the micro wiring. Ill try again next time i need to start the car.
-Ben
02-27-07, 08:15 AM
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It really should be grounded directly to the battery, but I doubt that's your problem. Are you using a USB to serial adapter? Some are really cheap and do crazy things like tie the ground of the car to the ground of the laptop. Bad news if you get a ground loop.
03-01-07, 05:56 AM
#6
Ok this is info needs to be stickied. But I will say it again. If you use a 9-pin usb adapter. You need to uninstall microtech, uninstall all your 9pin-usb drivers/software. And start fresh. Install the usb adapter configure it to port 1. Restart the machine. Reinstall microtech and it should work just fine.
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03-04-07, 01:19 PM
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Well, I did the uninstall-reinstall procedure. Now when i try and connect to the ECU while the car is running it says COM port 1 is unavailable. The ecu connects to the laptop just fine while not running. My next guess would be to try a different ground I.E. the battery. Or maybe i just need a different usb adapter.
Aaron, the 9 pin-usb adapter I have is a "cables to go". What are you using?
Aaron, the 9 pin-usb adapter I have is a "cables to go". What are you using?
03-05-07, 09:47 AM
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I didn't expect the uninstall to work. With all do respect to the original poster, the Microtech does nothing involving COM ports during the install, and reinstalling the driver of the adapter will not effect the Microtech software in any way.
You need to make sure to set up the proper COM port for your adapter. If you have a physical COM2 on the machine, disable it and set your USB adapter to COM2. You can generally do this by right clicking on the USB to serial adapter in Device Manager.
I don't use USB to serial adapters because they are too problematic. I use a PCMCIA to serial adapter that provides actual hardware based UARTs.
You need to make sure to set up the proper COM port for your adapter. If you have a physical COM2 on the machine, disable it and set your USB adapter to COM2. You can generally do this by right clicking on the USB to serial adapter in Device Manager.
I don't use USB to serial adapters because they are too problematic. I use a PCMCIA to serial adapter that provides actual hardware based UARTs.
03-05-07, 03:55 PM
#10
Originally Posted by Aaron Cake
I didn't expect the uninstall to work. With all do respect to the original poster, the Microtech does nothing involving COM ports during the install, and reinstalling the driver of the adapter will not effect the Microtech software in any way.
You need to make sure to set up the proper COM port for your adapter. If you have a physical COM2 on the machine, disable it and set your USB adapter to COM2. You can generally do this by right clicking on the USB to serial adapter in Device Manager.
I don't use USB to serial adapters because they are too problematic. I use a PCMCIA to serial adapter that provides actual hardware based UARTs.
You need to make sure to set up the proper COM port for your adapter. If you have a physical COM2 on the machine, disable it and set your USB adapter to COM2. You can generally do this by right clicking on the USB to serial adapter in Device Manager.
I don't use USB to serial adapters because they are too problematic. I use a PCMCIA to serial adapter that provides actual hardware based UARTs.
What happens is when you install a program looking to talk on port 1. For some reason the registry doesn't understand if you register a port 1 later after the install of the program.
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