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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures (B1000-U1833) >> Diagnostic Information and Procedures >> DTC U007F >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U100 - U02FF, U18CA, or U18CB is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing.
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