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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (Engine Controls Self-Diagnostics - 5.7L Corvette) >> Diagnostic Tests >> DTC P1415-P1416: Air System - Bank 1 & 2 >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2002 Chevrolet Corvette. 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. Install a scan tool. Idle the engine in Closed Loop. Turn OFF all the accessories. Monitor the HO2S voltage display for the applicable bank on the Engine 1 Data List using a scan tool. Command the AIR system ON with a scan tool. Observe and record the HO2S voltage as the AIR system is enabled. Does the HO2S voltage drop below 222 mV? If yes, see DIAGNOSTIC AIDS . If no, go to next step.
  3. Inspect all hoses and pipes for:
    • Being connected.
    • Secure clamps are on the pipes and the hoses.
    • No kinks, holes, or pinched hoses/pipes.
    • Components with evidence of heat damage.

    Did all the above verify to be okay? If yes, go to next step. If no, go to step  6.

  4. Disconnect the hose from the applicable check valve. Command the AIR system ON with a scan tool. Is air present at the hose outlet? If yes, go to step  7. If no, go to next step.
  5. Repair the restriction or the blockage in the applicable bank AIR hoses/pipes between the exhaust manifold and the point where the system branches to both sides of the engine. After repairs, go to step  8.
  6. Repair the condition found. Did you complete the repair? After repairs, go to step  8.
  7. Replace the applicable check valve. After repairs, go to next step.
  8. 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. Does the DTC run and pass? If yes, go to next step. If no, go to step  2.
  9. 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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