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Vehicle communications signal diagnostics using radio receiver

  • US 10,048,302 B2
  • Filed: 02/15/2016
  • Issued: 08/14/2018
  • Est. Priority Date: 02/15/2016
  • Status: Active Grant
First Claim
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1. An automotive diagnostic tool comprising:

  • a controller configured to output, to a speaker, an audio signal derived from an antenna signal demodulated at a frequency in a predetermined range corresponding to electromagnetic emissions caused by a differential signal channel being imbalanced and cause a vehicle controller to operate the differential signal channel to alternate between periods of signal activity and periods of signal inactivity causing corresponding audio signatures in the audio signal.

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