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Home >> Buick >> 2011 >> Regal CXL Turbo, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L - DTC P0010 Through P0179 >> DTC P0011 or P0014 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the appropriate Q6 camshaft position actuator solenoid valve.
    2. NOTE: A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage, 1.5-4.5 V on the control circuit is normal.
  2. Ignition ON, engine OFF, verify that a test lamp does not illuminate between the control circuit terminal A and ground.
    • If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
  3. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 Ω between the low reference circuit terminal B and ground.
    • If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
  4. Ignition ON, engine OFF, connect the DMM black lead to the control circuit terminal A. Connect the DMM red lead to B+. Set the DMM on the diode setting. Command the CMP actuator solenoid ON and OFF with a scan tool. The DMM should transition from OL when commanded OFF to less than 1 V when commanded ON.
    • If the circuit voltage does not correspond to the specified values, test the control circuit for an open/high resistance or a short to ground. If the circuit tests normal, replace the K20 ECM.
  5. Remove the Q6 camshaft position actuator solenoid valve. Inspect the Q6 camshaft position actuator solenoid valve and mounting area for the following conditions:
    • For a torn, restricted, mis-positioned, or missing screens at the Q6 camshaft position actuator solenoid valve
    • For engine oil leaks between the oil sealing lands of the Q6 camshaft position actuator solenoid valve. Inspect the lands of the Q6 camshaft position actuator solenoid valve for nicks.
    • For oil seepage at the Q6 camshaft position actuator solenoid valve connector
    • If a condition is found, replace Q6 camshaft position actuator solenoid valve.
  6. Ignition OFF, swap the appropriate Q6 camshaft position actuator solenoid valve with a Q6 camshaft position actuator solenoid valve that is operating correctly.
  7. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Intake/Exhaust Camshaft Position Variance parameters. The Intake/Exhaust Camshaft Position Variance should be less than 2 degrees in each of the commanded states.
    • If greater than the specified value, replace the mechanical camshaft position actuator.
  8. If all circuits/connections test normal, test or replace the Q6 camshaft position actuator solenoid valve.
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