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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Suspension Control System >> Diagnostic Information and Procedures >> DTC C056D: Electronic Control Unit Hardware >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify that DTC C056D is not set.
    • If the DTC is set 
    1. Program the K19 Suspension Control Module.
      • If the DTC is set, replace the K19 Suspension Control Module.
      • If the DTC is not set
    2. All OK.
    • If the DTC is not set 
  3. All OK.
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