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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 118 (Engine Controls And Fuel - 3.6L (LF4 LGX) - DTC P0685 LGX To DTC P3436 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Cylinder Deactivation (Active Fuel Management) System Diagnosis (LGX) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the engine oil level is within the specified level.
    • If not within the specified level 

      Repair as necessary.

    • If within the specified level 
  2. Verify the engine oil pressure is within the specified range, refer to Oil Pressure Diagnosis and Testing .
    • If not within the specified range 

      Repair as necessary.

    • If within the specified range 
  3. Engine idling at the normal operating temperature.
  4. Verify there is no abnormal engine noise.
    • If no abnormal engine noise 
  5. Verify no other DTCs are set.
    • If no other DTCs are set 
  6. Refer to Circuit/System Testing.