EcmSpy cable crap? how to test????

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captain chaos

Well-known member
Joined
Jan 16, 2011
Messages
360
Location
Kokomo, In
Ok, So I’ve had nothing but a nightmare trying to get EcmSpy to work with my bike.
I’ve FINALLY got my retarded Windows 8 laptop working with my cable as it was being rather retarded in regards to cable drivers. So anyway, it now recognizes the cable and doesn’t throw an “error 10” any more. Problem is, any attempt to connect with EcmSpy has been met with the wonderful “failed to get COM port” error. I have tried everything I could think of and at least a ½ dozen suggested fixes from the internet with no success. I suspect that maybe I have a bum cable. I need some detailed instruction on how to test it though. I need to know pin positions on the bike end of it as well as where those pin positions terminate at the USB side of it and what kind of resistance readings should I be getting when I test them. Simple “this wire color goes to this pin” won’t cut it as my cable seems to have different wire colors than standard; mine has red, black, white and green (? I think it was).
Anyway, I’m about to pull my hair out here and I could really use some help! [mad]
 
What version of ECMSpy are you using? For the Mono version, COM ports with a number higher than 9 (ex: COM10, COM11...) are shown but cannot be used. However, if your cable uses an FTDI chip, the cable's name will be shown in the Connect dialog and can be used. Select the port starting with "FTDI..." rather than a port number.

If you don't have an FTDI chip, try reassigning your COM port to 9 or lower, then retry ECMSpy.
I need to know pin positions on the bike end of it as well as where those pin positions terminate at the USB side of it and what kind of resistance readings should I be getting when I test them
At the bike DLC connector, pin1=ECM receive, pin2=ground, pin3=ECM transmit, pin4 (not populated in the cable) is +12V.
For your USB cable's wire colors/pinouts/resistance readings, you're asking for a lot there. Post some details about your cable if you need more help.

You can also independently verify the cable with a program like CoolTerm by manually sending commands to Get ECM Version or any number of other commands while connected to the bike.

https://readyxb.wordpress.com/
 
My fist cable was DOA. I bought it from eBay. I took a volt meter and tested the pins. The bike only uses three Tx(transmit) Rx(receive) and Ground. I forgot which one but either the Tx or Rx on mine was not reading any voltage so it couldn't communicate with the ecm. I bought a new cable from Amazon and soldered the plug end on and it works perfectly now. If you purchase another make sure it's correct voltage. You'll search for something like this USB to 5v TTL Header Like FTDI TTL-232R-5V
 
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