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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 110 (Seat Heating And Cooling) >> Diagnostic Information and Procedures >> DTC B12CC, B1338, B1339, or B133A >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that no other DTCs are set for the heated seat system, besides B12CC, B1338, B1339, or B133A.
    • Go to next step: If no other DTCs are set 
  3. Clear the DTCs.
  4. Verify DTC B12CC, B1338, B1339, or B133A is not set.
    • If DTC B12CC or B1338 is set 

      Refer to Circuit/System Testing - B12CC or B1338

    • If DTC B1339 or B133A is set 

      Refer to Circuit/System Testing - B1339 or B133A

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