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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Engine Controls - 3.9L - DTC P0011 To P0420) >> DTC P0010 or P0011 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, measure for battery voltage between the CMP actuator solenoid high control and ground.
    • If less than battery voltage, test the CMP actuator high control circuit for an open, short to ground or a faulty ECM.
  2. Connect a test lamp between the CMP actuator solenoid high control and ground. The test lamp should not illuminate.
    • If the test lamp illuminates, test the CMP actuator high control circuit for a short to voltage or a faulty ECM.
  3. Command the CMP actuator solenoid from 0-25 percent. The test lamp should turn ON and OFF.
    • If test lamp does not turn ON and OFF, test the CMP actuator high control circuit for high resistance or for a faulty ECM.
  4. Connect a test lamp between the low reference circuit of the CMP actuator solenoid and battery voltage. The test lamp should illuminate.
    • If the test lamp does not illuminate, test the low reference circuit for an open, high resistance or a faulty ECM.
  5. Determine that the vehicle has the correct engine oil. Refer to Service and Appearance Care in the Owner's Manual.
    • If the engine oil is old, burnt, contains additives or is not the correct viscosity, change the oil and filter.
  6. Test the engine oil pressure for correct pressure. Refer to Oil Pressure Diagnosis and Testing .
    • If the oil pressure is low, correct the low pressure first.
  7. Inspect the CMP actuator for the following conditions:
  8. Inspect for the following conditions:
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