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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC P30EC >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Verify no other DTCs are set.
    • Go to next step: If no other DTCs are set 
  3. Replace the component: K160 Brake System Control Module
  4. Verify the DTC does not set.
    • If the DTC is set 

      Replace the component: K20 Engine Control Module

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