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Home >> Buick >> 2017 >> Verano Base, Gas/Ethanol >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> Radio Controls Malfunction (with Monochrome Display) >> Circuit/System Verification

Circuit/System Verification

  1. Verify no DTCs are present.
    • If no DTCs are present. 
  2. Ignition ON, A11 radio ON.
  3. Verify that all radio controls operate and perform the correct function.
    • If some, but not all, controls operate normally. 

      Replace the A22 radio controls.

    • If all controls are inoperative. 

      Refer to Circuit/System Testing

    • If all radio controls operate and perform the correct function. 
  4. All OK.
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