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Home >> Oldsmobile >> 1985 >> Calais Base, 3.0 L >> Repair and Diagnosis (Single Page) >> Engine Performance >> Adjustment >> Tune-Up - 2.5L/151" Gas TBI In-Line 4 VIN [U] >> Computerized Engine Control System >> A-Chart Identification/Availability

A-Chart Identification/Availability

The following table lists only those A-charts available for this engine, as well as their identifications.

The A-charts are used to find and repair problems which the Diagnostic Circuit Check has found. If the initial steps in the Diagnostic Circuit Check reveal a problem, or if the engine does not start, you will be using one or more A-charts for diagnosis. Consider them the "fundamental problem" charts.

These charts are not contained in this article. They can be found in the appropriate article in the ENGINE PERFORMANCE section.

A-CHART IDENTIFICATION/AVAILABILITY

Chart Identification
A-1 No "Check Engine" or "Service Engine Soon" Light
A-2 Won't Flash Code 12 ("Check Engine" or "Service Engine Soon" On Steady)
A-3 Engine Cranks But Will Not Run: 1/2
A-5 Fuel System Diagnosis: 1/3