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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 P0418, P2257, or P2258: Secondary Air Injection Pump Relay >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition On
  2. Verify a click is heard or felt from the KR25 Secondary Air Injection Pump Relay when commanding the Secondary Air Injection Pump Relay On and Off with a scan tool.
    • If a click is not heard or felt 

      Refer to Circuit/System Testing

    • If a click is heard or felt 
  3. Verify the circuit status parameters listed below do not display Malfunction when commanding the Secondary Air Injection Pump Relay On and Off with a scan tool:
    • Secondary Air Injection Pump Relay Control Circuit Low Voltage Test Status
    • Secondary Air Injection Pump Relay Control Circuit Open Test Status
    • Secondary Air Injection Pump Relay Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing

    • If Malfunction is not displayed 
  4. 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.
  5. Verify a DTC does not set.
    • If a DTC sets 

      Refer to Circuit/System Testing

    • If a DTC does not set 
  6. All OK
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