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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 U182D >> Circuit/System Verification
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Circuit/System Verification

  1. Vehicle in Service Mode.
  2. Verify that DTC U0073, U0074, U0077, U0078, U007A, P06E4, P1EB9, U1814, U2099, B1325, B1330, B1370, B1380, B1424, B1428, B1440, B1441, B1517, C0800, C0899, C12E1, P0560, or P0562 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Verify that DTCs U1817, U1818, and U1821 are not set.
    • If all of the DTCs are set together 

      Refer to DTC U0074 .

    • Go to next step: If all of the DTCs are not set together 
  4. Refer to Circuit/System Testing.