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Home >> Buick >> 2020 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 173 (Antilock Brake System) >> Diagnostic Information and Procedures >> Traction Control/Stability Control Indicator Malfunction >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the Instrument Cluster indicators listed below turn ON and OFF when commanding the All Indicators ON and OFF with a scan tool.
    • Traction Control Off indicator
    • Stability Control Off indicator
    • Traction/stability Control indicator
    • If any indicator does not turn ON and OFF 

      Replace the P16 Instrument Cluster.

    • Go to next step: If all indicators turn ON and OFF 
  3. Verify the scan tool Body Control Module, Traction Control Switch parameter changes between Active and Inactive while pressing and releasing the S75 Traction Control Switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing.

    • Go to next step: If the parameter changes 
  4. All OK.
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