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 MANUALSSAAB1990900 BASE, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS
1990 Saab 900 Base, 2D Convertible, Standard
Control Units
1990 Saab 900 Base, 2D Convertible, StandardSECTION Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| ABS Control Unit | On left side of engine compartment, front of wheel housing. |
| Auto. Performance Control (APC) Control Unit | On left side of engine compartmant. |
| Burglar Alarm Control Unit (Convertible) | Under rear seat. |
| Cruise Control Unit | Under left side of dash, behind knee bolster. See Figure . |
| EZK Ignition Control Unit (16-Valve Non-Turbo) | In front of left wheelwell, near ignition amplifier. |
| Ignition Amplifier | On cooling plate in front of left wheelwell. |
| Ignition Pulse Amplifier (w/Tach.) | On fuse/relay panel, position "D". See Figure . |
| Fuel Injection Control Unit | Behind right kick panel. See Figure . |
| Passive Seat Belt Control Unit | Under rear seat. |
| Power Door Lock Controller | Under right side of dash, behind knee bolster. |
| Upshift Relay/Controller | On fuse/relay panel, position "F". See Figure . |
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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.