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Home >> Buick >> 2017 >> Envision Base >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Secondary And Configurable Customer Control System >> Diagnostic Information and Procedures >> Steering Wheel Controls Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON. Verify the driver information center (DIC) illuminates.
    • If the DIC does not illuminate 

      Test or replace the instrument cluster.

    • If the DIC illuminates 
  2. Verify all the associated primary controls on the radio (Volume, Mute, Seek, etc.) operate properly.
    • If all of the primary controls function properly 
  3. Verify all functions on the S70R Steering Wheel Controls Switch - Right operate properly.
    • If some, but not all, functions on the S70R Steering Wheel Controls Switch - Right do not operate 

      Test or replace the S70R Steering Wheel Controls Switch - Right

    • If all functions on the S70R Steering Wheel Controls Switch - Right do not operate 

      Refer to All Controls Malfunction in Circuit/System Testing.

    • If all functions on the S70R Steering Wheel Controls Switch - Right operate properly 
  4. Verify the voice and mute functions of the S70L Steering Wheel Controls Switch - Left operate properly.
    • If either the voice or mute function does not operate from the S70L Steering Wheel Controls Switch - Left 

      Refer to Left Controls Malfunction in Circuit/System Testing.

    • If both the voice and mute functions of the S70L Steering Wheel Controls Switch - Left operate properly 
  5. All OK.
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