Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
| Chart | Identification |
|---|---|
| A-1 | No "Check Engine" (or "Service Engine Soon") Light |
| A-2 | No ALDL Data or Won't Flash Code 12 "Check Engine" (or SES) Light On Steady |
| A-3 | Engine Cranks But Will Not Run: 1/2 |
| A-7 | Fuel System Diagnosis: 1/2 |
| A-9 | Cold Start Valve Diagnosis |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.