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Home >> Pontiac >> 2006 >> G6 GTP, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.9L - DTC P0010 To DTC P0300 >> DTC P0016 >> Circuit/System Verification
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Circuit/System Verification

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, change the oil and filter.
  3. Test the engine oil pressure for correct operation. Refer to OIL PRESSURE DIAGNOSIS AND TESTING .
  4. Allow engine to reach operating temperature.
    • If the engine cranks but does not run, observe the CMP Variance parameter while cranking. The CMP variance parameter should be 0 degrees.
  5. Set the parking brake and place the vehicle in park for automatic, or neutral for manual.
  6. Observe the CMP variance parameter. The CMP Variance will rise for 1-2 seconds until the CMP Angle parameter matches the Desired CMP parameter. The CMP Variance should again return to 0 degrees.
    7. IMPORTANT: The engine will run rough and may require throttle input to keep running.
  7. Command the CMP actuator to 24 degrees. The Desired CMP parameter should match the CMP Angle parameter,
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