Need help code reader not connecting

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Nov 6, 2021 | 11:10 AM
  #1  
My friend unplugged the ground for the wiring harness under thr passenger side carpet while the car was running and now the car wont start and the fans go on and my code reader wont connect. found another thread talking about this but it went dead before he gave the solution.
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Nov 9, 2021 | 05:11 AM
  #2  
have you checked power at pin 16 on the DLC?
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