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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the Secondary Air Pump.
  2. Ignition ON, verify that a test lamp does not illuminate between the Air 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 Air Pump Relay.
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