Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Buick >> 2020 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 154 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P15A3 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, 2019 Buick Regal, and 2018 Buick Regal TourX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON
  2. Verify with a scan tool that no DTC is set in the BCM.
    • Go to next step: If no DTC is set 
  3. Verify with a scan tool the Engine Control Module Stop/Start Mode parameter changes between Yes and No while pressing the S48E Multifunction Switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing

    • Go to next step: If the parameter changes 
  4. All OK.
scientia non olet · About Mike's Workshop Manuals