LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Engine Controls Self-Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P1415 & P1416: Air System - Bank 1 & 2 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing or replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent water intrusion into the PCM.
  1. Casting flash in the exhaust manifold or carbon build-up may restrict the amount of air flow necessary to affect the HO2S voltage. If you suspect this, remove the air pipe from the manifold and inspect the passage.
  2. Using the Freeze Frame/Failure Records may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records data can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can also help determine how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same Freeze Frame conditions that you observed in order to isolate when the DTC failed. Duplicate conditions such as the following:
    • The RPM
    • The load
    • The vehicle speed
    • The temperature
  3. A check valve that flows in both directions causes heat damage to the AIR system components.
  4. For an intermittent condition, see INTERMITTENT CONDITIONS  under SELF-DIAGNOSTIC SYSTEM.
scientia non olet · About LEMON Manuals