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Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no DTC is set.
    • Go to next step: If no DTCs are set 
  2. Ignition ON, perform the Speedometer Sweep Test with the scan tool, verify the speedometer sweeps from low to high position.
    • If speedometer does not sweep 

      Replace the P16 Instrument Cluster.

    • Go to next step: If speedometer sweeps properly 
  3. Drive the vehicle, verify the speedometer gauge value matches the Vehicle Speed parameter on the scan tool.
    • If the values do not match 

      Replace the P16 Instrument Cluster.

    • Go to next step: If the speedometer value matches the scan tool parameter 
  4. Drive the vehicle, verify the odometer display and the displayed distance counts up while driving.
    • If the odometer displays only "----" (dashes) 

      Refer to Circuit/System Testing.

    • If the odometer display does not count up 

      Replace the P16 Instrument Cluster.

    • Go to next step: If speedometer sweeps and displays the correct value, and the odometer display counts up 
  5. All OK.
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