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Home › Buick › 2011 › Regal CXL › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 2.4L - DTC P0300 Through DTC P0650 › DTC P0650 › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, command the MIL ON and OFF with a scan tool. The MIL should turn ON and OFF as commanded.
  2. Ignition ON, observe each of the MIL Control Circuit Test parameters listed below with a scan tool:
    • The MIL Control Circuit Low Voltage Test Status
    • The MIL Control Circuit Open Test Status
    • The MIL Control Circuit High Voltage Test Status

      Each parameter should display OK or Not Run.

  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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