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 MANUALSSAAB1995900 SE, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESINTEGRATED CENTRAL ELECTRONICS (ICE)SYSTEM TESTS - MISCELLANEOUSCOOLING SYSTEMPRESSURE SWITCH A/C
1995 Saab 900 SE, 4D Hatchback, Standard
Pressure Switch A/C
1995 Saab 900 SE, 4D Hatchback, StandardSECTION Pressure Switch A/C
- Select "READ VALUES" followed by "PRESS.SWITCH 1 A/C". For certain markets there is an extra pressure switch in the car, then select "PRESS.SWITCH 2 A/C". See Figure
.
- "OPEN" right arrow; Fan should not be activated.
- "CLOSED" right arrow; Fan should be activated.
- If this does not tally, disconnect the pressure switch, strap the connector's pins and repeat previous step.
- If it does not work, connect a Breakout Box (BOB) and check the wiring for any open circuits/short circuits as follows:
Pressure switch 1 -
- Between pin 22 in the ICE connector and pin 3 in the pressure switch's connector.
- Between pin 4 in the pressure switch's connector and a safe grounding point.
Pressure switch 2 -
- Between pin 69 in the ICE connector and pin 1 in the pressure switch's connector.
- Between pin 2 in the pressure switch's connector and a safe grounding point.
- If there is no fault in the wiring, fit a new pressure switch.
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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.