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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.
NOTE:

Tire Fill Alert Service Procedure needs to be done consecutively within the same day.

  1. Verify all the tire pressure sensors installed on the vehicle are compatible with tire fill alert:
    • Aluminum valve stem - scan tool Tire Pressure Sensor Identification parameter begins with 0 or B = Tire fill alert compatible
    • Rubber valve stem - 315 MHz - scan tool Tire Pressure Sensor Identification parameter begins with 9 = Tire fill alert compatible
    • Rubber valve stem - 433 MHz - scan tool Tire Pressure Sensor Identification parameter begins with a 4 = Tire fill alert compatible
    • If any tire pressure sensor installed on the vehicle is not compatible with tire fill alert 

      Replace the appropriate incompatible tire pressure sensor.

    • Go to next step: If all tire pressure sensors installed on the vehicle are compatible with tire fill alert 
  2. Check sensors to ensure they are transmitting (Hit Rate Test: Rolling Count/Signal Quality). Refer to Tire Pressure Rolling Count Procedure 
  3. If any of the sensors is not reporting properly, then follow Tire Pressure Monitoring sensor service procedure. Refer to DTC C0750, C0755, C0760, or C0765 
  4. While vehicle is parked and in accessory power mode, release air from tire until the Tire Pressure Monitoring System telltale is illuminated.
  5. Using a high pressure compressor (flow rate has to be higher than 0.15psi per second), start filling the tire with air.
  6. Monitor vehicle corner lights and horn chirps.
  7. If tire fill alert works and there is no issue with feature, then stop. If Tire Fill Alert is still not working, proceed to step 8.
  8. While vehicle is parked and in accessory power mode, release air from tire until the Tire Pressure Monitoring System telltale is illuminated.
  9. Monitor and log the Tire Fill Alert Current state parameter: NonMonitor, Monitor, Active, Achieved. Initial state should be in Monitor Mode.
  10. Using a high pressure compressor (flow rate has to be higher than 0.15psi per second), start filling the tire with air.
  11. Monitor the scan tool Tire Fill Alert parameter change its state from Monitor to Active to Achieved.
  12. If parameter states ARE changing while the tire is being filled with air, and no lights or horn feedback are being issued, then refer to Lighting diagnostics.
  13. If parameter states ARE NOT changing while the tire is being filled with air, and no lights or horn feedback are being issued, then refer to Body Control Module diagnostics.
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