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Paul Mugabi

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  1. The Link USB COM port is showing properly with no yellow exclamation marks. I have tried with 2 different laptops (Windows 7 and Windows 8) and with 2 different comms cables and still no joy. An attempted fimware update returns the message: Error, could not connect to ECU and then provides various troubleshooting steps which I have already carried out.
  2. Thanks for the response. I have unplugged it from the board. There is nothing connected to either CAN1 or CAN2 at the moment. Will fixing this require sending the ECU back?
  3. Hi Dave, CAN 1 was unplugged as mentioned in the original post.
  4. ECU is a PnP WRX104+. USB communication was fine at first. Today I tried to reconnect to the ECU but I'm unable to. The PC Link USB connection is seen but I can't connect to the ECU. Between the last connection and now, the wiring loom has had some changes to it to remove extra wires and a CAN connector was also added to the CAN1 port. I have removed the CAN connector since I've read that it can cause problems. The ECU is fine and still runs the car. However while troubleshooting I noticed that RS232-TX has a steady -11V on it (yes, that's negative). Could this be the problem and does anyone have any ideas on how to resolve this?
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