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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Engine Controls Self-Diagnostics - 5.0L & 5.7L) >> Diagnostic Tests >> DTC P0418: Air Pump Relay Control Circuit >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2001 GMC Savana, 2001 Chevrolet RV Cutaway, 2001 Chevrolet Cutaway, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Using FREEZE FRAME/FAILURE RECORDS data may aid in locating an intermittent condition. If you cannot duplicate DTC, information included in FREEZE FRAME/FAILURE RECORDS data can aid in determining how many miles since DTC set. FAIL COUNTER and PASS COUNTER can also aid in determining how many ignition cycles diagnostic reported a pass or a fail. Operate vehicle within same freeze frame conditions, such as RPM, load, vehicle speed, temperature etc., that you observed. This will isolate when DTC failed.

If an intermittent is suspected, see INTERMITTENT TROUBLE CODE DETERMINATION  under ON-BOARD DIAGNOSTICS under SELF-DIAGNOSTIC SYSTEM.

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