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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0410: Secondary Air Injection (Air) System >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you perform the Diagnostic System Check-Engine Controls? If yes, go to next step. If no, see DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM.
  2. Is the AIR pump fuse okay? If yes, go to next step. If no, go to step  11.
  3. Is DTC P0412 or P0418 active? If yes, see DTC P0412: AIR RELAY CONTROL CIRCUIT  or DTC P0418: AIR PUMP RELAY CONTROL CIRCUIT  . If no, go to next step.
  4. Turn ON the ignition, with the engine OFF. Command the AIR pump relay on with the scan tool. Does the AIR pump turn ON? If yes, go to step  8. If no, go to next step.
  5. Turn OFF the ignition. Remove the AIR pump relay. Test the battery voltage supply circuit of the AIR pump relay for an open using a test lamp connected to ground. Does the test lamp illuminate? If yes, go to next step. If no, go to step  16.
  6. Install the AIR pump relay. Disconnect the AIR pump electrical connector. Connect a test lamp to battery ground. Probe terminal "A" of the AIR pump electrical connector. Turn ON the ignition, with the engine OFF. Command the AIR system ON with a scan tool. Does the test lamp illuminate? If yes, go to next step. If no, go to step  17.
  7. Test the ground circuit of the AIR pump for an open or poor ground connection using a test lamp connected to battery voltage and probing terminal "B" of the AIR pump electrical. Is the test lamp illuminated? If yes, go to step  27. If no, go to step  18.
  8. Turn OFF the ignition. Disconnect the AIR pump outlet hose from the AIR pump. Turn ON the ignition, with the engine OFF. Command the AIR system ON with a scan tool. Is air pressure present at the AIR pump outlet? If yes, go to next step. If no, go to step  10.
  9. Turn OFF the ignition. Disconnect the vacuum hose from the AIR shut-off valve. Start the engine. Command the AIR solenoid ON with a scan tool. Is a vacuum present at the AIR shut-off valve? If yes, go to step  14. If no, go to step  19.
  10. Inspect for a restriction or for a blockage in the AIR pump inlet hoses and in the AIR pump inlet pipes. If you find a restriction or a blockage in the AIR hoses and in the pipes, repair the restriction as necessary. Did you find and correct the condition? If yes, go to step  29. If no, go to step  28.
  11. Turn OFF the ignition. Remove the AIR pump relay. Connect a test lamp to battery voltage. Test the battery voltage supply to the AIR pump and the AIR pump relay coil at the relay connector for a short to ground using a test lamp. Does the test lamp illuminate? If yes, go to step  23. If no, go to next step.
  12. Disconnect the AIR pump electrical connector. Connect a test lamp to battery voltage. Test the AIR pump connector terminal "A" with a test lamp for a short to ground. Does the test lamp illuminate? If yes, go to step  24. If no, go to next step.
  13. Install the AIR pump electrical connector. Install a new AIR pump fuse. Install the AIR pump relay. Turn ON the ignition, with the engine OFF. Command the AIR system ON with a scan tool. Does the AIR pump fuse open? If yes, go to step  28. If no, see DIAGNOSTIC AIDS .
  14. Install the AIR pump outlet hose to the AIR pump and the vacuum hose to the AIR shut-off valve. Disconnect the outlet hose of the AIR shut-off valve. Start and idle the engine. Command the AIR system with a scan tool. Is air pressure present at the outlet of the AIR shut-off valve? If yes, go to step  22. If no, go to next step.
  15. Replace the AIR shut-off valve. After repairs, go to step  29.
  16. Repair the open in the battery voltage supply circuit to the AIR pump relay connector. After repairs, go to step  29.
  17. Repair the open in the AIR pump voltage supply circuit between the AIR pump relay and the AIR pump connector, or poor connections at the relay connector block. Did you find and correct the condition? If yes, go to step  29. If no, go to step  25.
  18. Repair the poor ground connection or the open ground circuit of the AIR pump. After repairs, go to step  29.
  19. Turn OFF the ignition. Disconnect the source vacuum hose from the AIR solenoid valve. Start and idle the engine. Is a vacuum present at the AIR solenoid valve? If yes, go to next step. If no, go to step  21.
  20. Turn OFF the ignition. Connect the source vacuum hose to the AIR solenoid valve. Disconnect the vacuum hose to the AIR shut-off valve at the AIR solenoid valve. Start and idle the engine. Command the AIR solenoid valve ON with a scan tool. Is a vacuum present at the AIR Solenoid Valve outlet? If yes, go to next step. If no, go to step  26.
  21. Repair the restriction, the blockage, or the damage to the vacuum hose. After repairs, go to step  29.
  22. Repair the conditions in the AIR hose between the AIR shut-off valve and the point where the system branches to both sides of the engine. After repairs, go to step  29.
  23. Repair the short to ground in the ignition voltage circuit between the fuse and the relay. After repairs, go to step  29.
  24. Repair the short to ground in the circuit between the AIR pump relay and the AIR pump. After repairs, go to step  29.
  25. Replace the AIR pump relay. After repairs, go to step  29.
  26. Replace the AIR solenoid valve. After repairs, go to step  29.
  27. Inspect for poor connections at the AIR pump electrical connector. If you find a poor connection, repair the terminal as necessary. Did you find and correct the condition? If yes, go to step  29. If no, go to next step.
  28. Replace the AIR pump. After repairs, go to next step.
  29. Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running DTC as specified in the supporting text. Does the DTC run and pass? If yes, go to next step. If no, go to step  2.
  30. Observe the stored information, Capture Info with a scan tool. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
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