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 MANUALSSAAB19949000 AERO, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESENSOR RANGE CHARTSENGINE CONTROLS - SENSOR OPERATING RANGE CHARTSINTRODUCTION
1994 Saab 9000 Aero, Standard
Engine Controls - Sensor Operating Range Charts: Introduction
1994 Saab 9000 Aero, StandardSECTION Introduction
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with minimum 10-megohm input impedance.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE (900 SERIES) (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| -22 (-30) | 20,000-30,000 | ||
| 68 (20) | 8300-10,600 | ||
| 104 (40) | 2300-2700 | ||
| 140 (60) | 565-670 | ||
| 176 (80) | 295-365 | ||
| 194 (90) | 200-240 | ||
| 230 (110) | 140-160 | ||
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ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE (9000 SERIES EXCEPT TURBO) (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| 32 ( 0) | 5800 | ||
| 50 (10) | 3800 | ||
| 59 (15) | 3000 | ||
| 68 (20) | 2600 | ||
| 77 (25) | 2000 | ||
| 86 (30) | 1700 | ||
| 176 (80) | 320 | ||
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ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE (9000 SERIES TURBO) (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| -22 (-30) | 20,000-30,000 | ||
| 14 (-10) | 8300-10,600 | ||
| 68 (20) | 2300-2700 | ||
| 104 (40) | 1000-1300 | ||
| 140 (60) | 560-670 | ||
| 176 (80) | 300-360 | ||
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INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (900 SERIES EXCEPT TRIONIC) (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| 4 (-20) | 15,000 | ||
| 32 (0) | 5800 | ||
| 68 (20) | 2600 | ||
| 86 (30) | 1700 | ||
| 176 (80) | 320 | ||
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INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (900 SERIES TRIONIC) (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| -22 (-30) | 20,000-30,000 | ||
| 14 (-10) | 7000-11,400 | ||
| 68 (20) | 2100-2900 | ||
| 104 (40) | 1000-1300 | ||
| 140 (60) | 565-670 | ||
| 176 (80) | 295-365 | ||
| 194 (90) | 240-260 | ||
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INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (9000 SERIES TURBO) (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| -22 (-30) | 20,000-30,000 | ||
| 14 (-10) | 8300-10,600 | ||
| 68 (20) | 2300-2700 | ||
| 104 (40) | 1000-1300 | ||
| 140 (60) | 560-670 | ||
| 176 (80) | 300-360 | ||
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MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR VOLTAGE (900 SERIES TRIONIC & 9000 SERIES) (1)
| Pressure - In. Hg | Volts | ||
|---|---|---|---|
| -22.5 | 0.5 | ||
| -15.0 | 0.9 | ||
| 0 | 1.8 | ||
| 7.5 | 2.3 | ||
| 15.0 | 2.8 | ||
| 22.5 | 3.3 | ||
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OXYGEN SENSOR VOLTAGE
| Condition | Volts |
|---|---|
| Lean | 0-0.4 |
| Rich | 0.6-1.0 |
THROTTLE POSITION SENSOR (TPS) RESISTANCE (900 SERIES EXCEPT TRIONIC)
| Position | Ohms | ||
|---|---|---|---|
| Idle Position (1) | 2300-3400 | ||
| Wide Open Throttle (1) | 700-1000 | ||
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THROTTLE POSITION SENSOR (TPS) RESISTANCE (900 SERIES TRIONIC)
| Position | Ohms | ||||
|---|---|---|---|---|---|
| Total Resistance (1) | 1600-2400 | ||||
| Idle Position (2) | 800-1200 | ||||
| Wide Open Throttle (2) | 2000-3000 | ||||
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THROTTLE POSITION SENSOR (TPS) RESISTANCE (9000 SERIES EXCEPT TURBO) (1)
| Position | Ohms | ||
|---|---|---|---|
| Fully Closed | 2600-3000 | ||
| Fully Open | 1100-1500 | ||
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THROTTLE POSITION SENSOR (TPS) RESISTANCE (9000 SERIES TURBO) (1)
| Position | Ohms | ||
|---|---|---|---|
| Fully Closed | 2500 | ||
| Fully Open | 1000 | ||
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VEHICLE SPEED SENSOR (VSS) VOLTAGE (1)
| Application | Volts | ||
|---|---|---|---|
| 9000 Series | About 0.6 | ||
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RENDER: 1.0x
NO RELATED
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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.