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    Thread: P0690 Code help

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    1. #20
      Join Date
      Apr 2018
      Posts
      36

      Check those voltages again, referenced to battery negative

      There shouldn't be that much voltage drop across the relay contacts
      Ignition on: 30 12v, 85 12v, 86 ground, 87 6.3v
      The voltage at terminals 30 and 87 should pretty much be the same with the relay operating.






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