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 MANUALSSAAB19999-3 BASE, 2D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTSCOMPUTERIZED ENGINE CONTROLSELECTRONIC CONTROL MODULE (ECM)POWER CIRCUIT
1999 Saab 9-3 Base, 2D Hatchback, Automatic
Power Circuit
1999 Saab 9-3 Base, 2D Hatchback, AutomaticSECTION Power Circuit
- Use DVOM to check for battery voltage at terminals No. 1 and 48 (Pink/White wires). If battery voltage exists, go to next step. If battery voltage does not exist, repair open circuit in wire between ECM and fuse No. 28 in dashboard fuse block. See appropriate wiring diagram in WIRING DIAGRAMS article.
- Turn ignition on. Check for battery voltage between ECM terminal No. 60 (Yellow/Grey) and ground. If battery voltage does not exist, repair open circuit in wire between ECM and fuse No. 17 in dashboard fuse block.
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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.