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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communication System - DTC U182D To U3012 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U3000: Control Module >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC U3000 is not set.
    • If DTC U3000 is set with symptom byte 43, 47 or 4B 
    1. Program the device that set the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the device that set the DTC.
      • If the DTC does not set
    3. All OK.
    • If DTC U3000 is set with any symptom byte, except 43, 47 or 4B 

      Replace the device that set the DTC.

    • If DTC U3000 is not set 
  3. All OK
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