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Home >> Cadillac >> 2015 >> XTS Base >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering System >> Diagnostic Information and Procedures >> DTC C056D (Power Steering Control Module): Electronic Control Unit Hardware >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC C056D is not set.
    • If DTC C056D is set with symptom byte 19, 38, 3B, 3C, 49, or 5A 
    1. Program the K43 Power Steering Control Module.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the K43 Power Steering Control Module.
      • If the DTC does not set
    3. All OK.
    • If DTC C056D is set with symptom byte 37 or 39 

      Replace the K43 Power Steering Control Module

    • If DTC C056D is not set 
  3. All OK
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