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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (12 V Starting And Charging - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC C15C5 >> Circuit/System Testing

Circuit/System Testing

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  1. Verify DTC's P0615, P0616 or P0617 are not set
    • Go to next step: If the DTC is not set 
  2. Clear the DTC C15C5.
  3. Test drive the vehicle under the condition for setting the DTC,
  4. Verify the DTC does not set
    • If the DTC resets 

      Replace the K160 Brake System Control Module.

    • Go to next step: If the DTC does not reset 
  5. A fault is not currently present and may be an intermittent condition. Refer to Diagnostic Instructions.
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