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Troubleshooting Checklist

Having difficulty reading and/or writing to the ECU? Here’s our 'Troubleshooting Checklist'.

Problems related to reading and writing an ECU are generally not software related. They are generally caused by one of the following issues:

  1. If you’re using a Denso USB Interface or Log Box, please test the interface to ensure there’s communication between the ECU and the interface.
  2. If you're using a Mitsubishi USB Interface or Log Box, please test the interface to ensure there's communication between the ECU and the interface.
  3. The Interface mode switch should be in programming/flashing mode (red LED on).
  4. The Bike Ignition should be turned on, gear in Neutral, Kill Switch in the RUN position or 12v power supply connected if using a bench harness.
  5. Your harness may not be installed correctly - please check installation instructions.
  6. Check for broken or loose wires in harness or bad plug connections, please check circuit continuity from white 8 pin molex plug right through to the pins in the ECU Plug.
  7. If you are performing multiple flashes on V1 & V2 interfaces only, remember to move the interface mode switch into the center position, then back to flashing mode (red led on), before attempting another write/read operation.
  8. If the ECU has been flashed by either a send-in service or any other flashing service before, it has more than likely been locked by that service. Please run the unlock function if available. Sometimes the ECU may have to be sent back to the original source to get returned to stock.
  9. Please check you are using a high speed USB 2 compatible USB Port on your computer.
  10. Your computer meets our Specifications.

Please note we have a dedicated section in the Woolich Racing Forums entitled, ECU Reading and Writing (Flashing) Issues and also COM Port Setup and Connection Issues.

Once you have reviewed the list above, and you’re still having issues, please contact us.

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