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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Transfer Case - BW 4475) >> Diagnostic Information and Procedures >> DTC C1155 >> 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 OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
  2. Engine running for at least 1 minute.
  3. Verify that DTC C1155 is not set.
    • If the DTC is set 
    1. Ignition ON.
    2. Perform the Configuration/Reset function - Transfer Case Clutch Identifier.
    3. Ignition OFF, disconnect the data link connector.
    4. Wait 30 seconds, ignition ON.
    5. Verify DTC C115 is not set.
      • If DTC is set

        Ignition OFF, Refer to step 3.1

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