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Home >> Chevrolet >> 2012 >> Equinox LS, AWD, Gas >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls/Fuel - 2.4L - DTC P0010 To DTC P0411 >> Diagnostic Information and Procedures >> DTC P0411 >> Circuit/System Verification

Circuit/System Verification

    NOTE:

    Verify the battery is fully charged before proceeding with this diagnostic procedure. The secondary air injection pump output will vary with system voltage.

  1. Ignition ON
  2. Verify that DTC P0412, P0418, P2430, P2431, P2432, P2433, P2440, or P2444 is not set.
    • If none of the DTCs are set. 
  3. Verify the scan tool BARO pressure parameter is within the range specified in the Altitude Versus Barometric Pressure
    • If within the specified range 
  4. Verify the scan tool Secondary Air Injection Pressure Sensor and BARO pressure parameters are within 3 kPa (0.4 psi).
    • If not within the specified range 

      Replace the Q29 secondary air injection solenoid valve.

    • If within the specified range 
    5. NOTE:

    Repeat multiple times to verify secondary air injection check valve operation. It may be necessary to use one of the following methods to verify valve operation:

    • Use a stethoscope to listen for check valve operation.
    • Disconnect the secondary air injection pipe from the secondary air injection solenoid valve and visually inspect the valve inlet port for valve stem movement.
    • Disconnect the secondary air injection valve and verify airflow through the valve when commanding the Secondary Air Injection System to Active with a scan tool.
  5. Verify the secondary air injection solenoid valve opens and closes when commanding the Secondary Air Injection Solenoid Valve Open and Closed with a scan tool.
    • If the secondary air injection solenoid valve does not open and close 

      Refer to Circuit/System Testing-Secondary Air Injection Solenoid Valve Malfunction below.

    • If the secondary air injection solenoid valve opens and closes 
  6. Engine running
  7. Verify the secondary air injection pump turns ON and OFF when commanding the Secondary Air Injection Pump Relay ON and OFF with a scan tool.
    • If the secondary air injection pump does not turn ON and OFF 

      Refer to Circuit/System Testing-Secondary Air Injection Pump Malfunction below.

    • If the secondary air injection pump turns ON and OFF as specified 
  8. Verify the scan tool Secondary Air Injection Pressure Sensor parameter increases between 15-22 kPa (2.2-3.2 psi) when the Secondary Air Injection Pump Relay is commanded ON with a scan tool.
    • If not within the specified range 

      Refer to Circuit/System Testing-Secondary Air Injection System Pressure Not In Range below.

    • If within the specified range 
  9. Verify the scan tool Secondary Air Injection Pressure Sensor parameter increases between 8-15 kPa (1.2-2.2 psi) when the Secondary Air Injection System is commanded to Active with a scan tool.
    • If not within the specified range 

      Refer to Circuit/System Testing-Secondary Air Injection System Pressure Not In Range below.

    • If within the specified range 
  10. 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.
  11. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing below.

    • If the DTC does not set 
  12. All OK
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