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Home >> Cadillac >> 2010 >> STS 3.6 V, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 4.6L (LH2) - DTC P0010 To DTC P0333) >> DTC P0016, P0017, P0018, or P0019 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT: The supply of clean pressurized engine oil to the CMP actuator is essential to CMP actuator performance.
  1. Observe the engine oil level. The engine oil level should be within operating range. Refer to Approximate Fluid Capacities .
  2. Ensure that the vehicle has the correct engine oil and is not old, burnt or contains additives. Refer to Checking Things Under the Hood in Service and Appearance Care within the Owner's Manual.
    • If the vehicle has the incorrect engine oil, is old, burnt, or contains additives then change the oil and filter.
  3. Test the engine oil pressure for correct operation. Refer to Oil Pressure Diagnosis and Testing .
  4. Allow the engine to reach operating temperature.
    5. IMPORTANT: The CMP actuator output control function will automatically raise the engine speed.
  5. Engine running, command the CMP actuator to 20 degrees. The CMP Angle parameter value should match the CMP Desired parameter value.
  6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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