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The heavy vehicle industry has become more complex due to amount and capability of the Electronic Control Units (ECUs) used on a vehicle. Today's ECUs require the use of diagnostic tools to perform various tasks such as troubleshooting, configuring, enabling features, and downloading firmware. There are a wide variety of diagnostic devices, from the simple easy to use low cost versions, to the more complex higher cost variants. Some of the lower cost diagnostic tools offer distinct advantages in their simplicity and usability, compared to the complexity of the higher cost devices.