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Home › GMC › 2019 › Terrain SL › Repair and Diagnosis › External Pages › Different car › Section 63 (Power Steering System) › Diagnostic Information And Procedures › DTC C056D: Electronic Control Unit Hardware (Power Steering Control Module) › Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify DTC C056D is not set.
    • If the DTC is set 
    1. Perform all necessary programming and setup procedures for the control module: K43 Power Steering Control Module
    2. Verify the DTC does not set.
      • If the DTC sets - Replace the component: K43 Power Steering Control Module
      • If the DTC is not set
    3. All OK.
    • Go to next step: If the DTC is not set 
  3. All OK.
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