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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P103D, P10C6, P10F5, P117A, P11FF, P128C, P128D, P128F, P135C, P14A0, P14B6, P14CD, P14D4-P14D6, P150C, P1762, P2544, P30DE, or P314E >> 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 / Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following component/system: Serial Data
    • Go to next step: If a related DTC is not set 
  3. Clear the DTCs.
  4. Operate the vehicle within the Conditions for Running the DTC.

    Verify the DTC does not set.

    • If the DTC sets 
    1. Ignition/Vehicle - Off
    2. Replace the component: Transmitting Component - Refer to: Transmitting and Receiving Components
    3. Operate the vehicle within the Conditions for Running the DTC.

      Verify the DTC does not set.

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