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.
1995 Geo Prizm Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Diagnostic Charts: Notes
NOTE:
The following flow charts and schematics are courtesy of General Motors Corp.
DIAGNOSTIC CHARTS
| Malfunction (1) | Chart No. | |||||
|---|---|---|---|---|---|---|
| No Malfunction Indicator Lamp (MIL) | (2) A1-1 | |||||
| MIL On Steady, Does Not Flash DTC 12 Or Any DTCs | (2) A1-2 | |||||
| Engine Cranks But Will Not Start | A1-3 | |||||
| Fuel Injector Circuit Check (Engine No-Start) | A1-5 | |||||
| Fuel System (Fuel Pump Relay Check) | A1-7A | |||||
| Fuel System (Fuel Pressure Check) | A1-7B | |||||
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Factory Service Tools
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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.
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