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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 110 (Seat Heating And Cooling) >> Diagnostic Information and Procedures >> DTC B19C2 or B19C3 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Verify DTCs B19C2 or B19C3 are not set.
    • If a DTC is set 

      Replace the S48A Multifunction Switch - Instrument Panel.

    • Go to next step: If no DTCs are set 
  3. All OK.
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