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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Diagnostic Information and Procedures >> DTC C028F >> Circuit/System Verification

Circuit/System Verification

  1. Verify the M104L Park Brake Actuator - Left apply when pulling the S91 Park Brake Switch.
    • If the M104L Park Brake Actuator - Left does not apply 

      Refer to the Circuit/System Testing.

    • Go to next step: If the M104L Park Brake Actuator - Left does apply 
  2. Verify the M104L Park Brake Actuator - Left release when pressing the S91 Park Brake Switch.
    • If the M104L Park Brake Actuator - Left does not release 

      Refer to the Circuit/System Testing.

    • Go to next step: If the M104L Park Brake Actuator - Left does release 
  3. All OK.
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