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.
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HOMESERVICE MANUALSSAAB19869000 STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSALTERNATOR & REGULATOR - BOSCHOVERHAULTESTING & REPAIRDIODE ASSEMBLY
1986 Saab 9000 Standard
Diode Assembly
1986 Saab 9000 StandardSECTION Diode Assembly
- Place ohmmeter scale on X 100 scale. Connect ohmmeter leads across "B+" terminal and 3 stator terminals one at a time. Reverse leads, ohmmeter should indicate continuity in one direction only.
- Connect ohmmeter leads across negative plate and 3 stator terminals one at a time. Reverse leads, ohmmeter should indicate continuity in one direction only.
- Connect ohmmeter leads across "D+" terminal and 3 stator terminals one at a time. Reverse leads. Ohmmeter should indicate continuity in one direction only. If diodes are found to be defective, replace diode assembly.
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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.