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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Controls And Fuel - 2.4L - DTC P0114 To DTC P0604) >> Diagnostic Information and Procedures >> DTC P0411: Secondary Air Injection System >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
    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, P2235, P2236, P2237, P2238, 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 table.
    • If not within the specified range 

      Refer to DTC P0106 .

    • If within the specified range 
    4. NOTE:

    Engine coolant temperature must be greater than 5°C (41°F) to enable scan tool device control. Repeat multiple times to verify secondary air injection shutoff and check valve operation.

  4. Verify the secondary air injection shutoff and check valves turn ON and OFF when commanding the Secondary Air Injection Solenoid Valve between ON and OFF with a scan tool.
    • If the valves do not operate as specified 

      Refer to Circuit/System Testing-Secondary Air Injection Shutoff and Check Valve Malfunction.

    • If the valves operate as specified 
    5. NOTE:

    To prevent the secondary air injection pump from overheating, do not operate the pump consecutively for greater than 2 minutes. The pump is provided with a thermal protector that will automatically reset when allowed to cool.

  5. Verify the G21 Secondary Air Injection Pump turns ON and OFF when commanding the Secondary Air Injection Pump Relay between ON and OFF with a scan tool.
    • If the pump does not operate as specified 

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

    • If the pump operates as specified 
  6. Verify the scan tool Secondary Air Injection Pressure Sensor Bank 1, Bank 2 and the BARO pressure parameters are within 3kPa (0.4 psi).
    • If not within the specified range 

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

    • If within the specified range 
  7. Engine running
  8. Verify the scan tool Secondary Air Injection Pressure Sensor Bank 1 and Bank 2 parameters increase between 14-22kPa (2.0-3.2 psi), greater than BARO, 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.

    • If within the specified range 
  9. Verify the scan tool Secondary Air Injection Pressure Sensor Bank 1 and Bank 2 parameters increase between 5-11kPa (0.7-1.6 psi), greater than BARO, when the Secondary Air Injection System 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.

    • 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.

    • If the DTC does not set 
  12. All OK
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