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Home >> Buick >> 2018 >> Encore Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> DTC P0703 >> Circuit/System Verification
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Circuit/System Verification

  1. Verify that no DTCs are set, except DTC P0703.
    • Go to next step: If only DTC P0703 is set 
  2. Replace the K9 Body Control Module.
  3. Verify DTC P0703 does not set when operating the vehicle within the conditions for running the DTC.
    • If the DTC sets 

      Replace the K20 Engine Control Module.

    • Go to next step: If the DTC does not set 
  4. All OK.