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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 139 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (P0449-P3436) And Symptoms) >> Diagnostic Information and Procedures >> Fuel Injector Balance Test >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2020 Buick Regal 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 scan tool Fuel Remaining parameter is greater than 10%.
    • If the Fuel Remaining parameter is less than 10%  , add fuel to the fuel tank.
    • Go to next step: If the Fuel Remaining parameter is 10% or greater 
  3. Verify the scan tool ECT Sensor parameter is less than 60°C (140°F).
    • If the ECT Sensor parameter is greater than 60°C (140°F)  , allow the engine temperature to cool.
    • Go to next step: If the ECT Sensor parameter is 60°C (140°F) or less 
  4. Verify the battery is fully charged and all accessories are Off.
    • If the battery is not fully charged  , charge or repair battery as necessary.
    • Go to next step: If the battery is fully charged 
  5. Preform the appropriate Fuel Injector Balance Test in Circuit System Testing.
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