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Thread: Testing 02 sensor w car running - 20 Pin diagnostic plug?

  1. 05-18-2019, 10:14 AM #1
    somecarguy
    somecarguy is offline Member
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    Testing 02 sensor w car running - 20 Pin diagnostic plug?

    I have attached the pinout for the late style 20 pin diagnostician plug. Does anyone know which wire of the 4-wire oxygen sensor pin 16 corresponds to?

    I want to see my 02 sensor output with the car running but prefer not to 'back probe' any connectors.
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