Dont jump any wires.
Do you have a light on the machine? I hear some new machines they arent installing one so thats why I ask.
If you have a light, turn the key on and off 3 times and then it will start spitting out the codes. If you dont have a light, you would need to hook one up or get the laptop cable/software.
All the info on codes is in section 5.b or 5.c or something of the service manual available at kohlerplus.com