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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering System >> Diagnostic Information and Procedures >> DTC C056D: Electronic Control Unit Malfunction (Power Steering Control Module) >> Circuit/System Description

Circuit/System Description

The internal fault detection is handled inside the power steering control module. The symptom byte information is for engineering reference only. No external circuit diagnosis is involved.