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Home >> Buick >> 2011 >> Regal CXL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.4L - DTC P0685 Through P2635 >> DTC P2444 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the G21 Secondary Air Injection Pump.
  2. Ignition ON, verify that a test lamp does not illuminate between the G21 Secondary Air Injection Pump ignition voltage circuit terminal A and ground.
    • If the test lamp illuminates, test the ignition circuit for a short to voltage.
  3. If the circuit tests normal replace the Secondary Air Injection Pump Relay.
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