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 DIAGNOSISELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORSWITCHES
1990 Saab 900 Base, 2D Convertible, Standard
Electrical Component Locator: Switches
1990 Saab 900 Base, 2D Convertible, StandardSECTION Switches
SWITCHES LOCATION
| Component | Location |
|---|---|
| ABS Pressure Switch | In engine compartment, on hydraulic control unit. |
| A/C Clutch Cycling Switch | On right side of A/C housing. |
| A/C Coolant Temperature By-Pass Switch | In top coolant hose, at right side of radiator. |
| A/C Low Pressure Switch | On receiver-drier. |
| Back-Up Light Switch (M/T) | Under console, next to shift lever. |
| Back-Up/Neutral Switch (A/T) | On gear lever housing, under console. |
| Boost Pressure Switch (Turbo) | Under left side of dash. |
| Coolant Fan Thermoswitch | Below coolant recovery hose, on left side of radiator. |
| Coolant Temperature Warning Switch | On lower radiator hose. |
| Cruise Control Brake Switch | On bracket above brake pedal. |
| Cruise Control Clutch Switch | On bracket above clutch pedal. |
| Idle Speed Switch | Under center console. |
| Ignition Switch | On console, between front seats. |
| Manifold Pressure Switch | Under left side of instrument panel. |
| Parking Brake Switch | On bracket under console, near parking brake lever. |
| Rear Window Defogger Mercury Switch (Convertible) | Top of left frame member assembly. |
| Stoplight Switch | On bracket near brake pedal. |
| Thermo Time Switch | On top center of cylinder head, between injectors. |
| Throttle Switch | Attached to lower portion of throttle housing. |
| Upshift Indicator Switches | At throttle housing, right transaxle cover and on the manifold. |
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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.