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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 B19D6 >> 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 DTC B19D6: 49 is not set.
    • If the DTC is set 

      Replace the K29F Front Seat Heater Control Module.

    • Go to next step: If the DTC is not set 
  3. Verify DTC B19D6: 28 is not set.
    • If the DTC is set 

      Refer to Circuit/System Testing

    • Go to next step: If the DTC is not set 
  4. All OK.
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