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 MANUALSSUBARU1991JUSTY GL, 2D HATCHBACK, 1.2 7, AUTOMATIC CVTREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESENSOR RANGE CHARTSENGINE CONTROLS - SENSOR OPERATING RANGE CHARTSSENSOR OPERATING RANGE CHARTSNOTES
1991 Subaru Justy GL, 2D Hatchback, 1.2 7, Automatic CVT
Sensor Operating Range Charts: Notes
1991 Subaru Justy GL, 2D Hatchback, 1.2 7, Automatic CVTSECTION Notes
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
AIRFLOW METER VOLTAGE
| Application | (1) Volts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Justy | (2) | ||||||||||
| Legacy | |||||||||||
| ECU Pin No. 8 & Ground (3) | |||||||||||
| Engine Off | 0-13 | ||||||||||
| At Idle | 13-14 | ||||||||||
| ECU Pin No. 9 & Ground (3) | |||||||||||
| Engine Off | 0-.3 | ||||||||||
| At Idle | .8-1.2 | ||||||||||
| ECU Pin No. 10 & Ground (3) | |||||||||||
| Engine Off | Zero | ||||||||||
| At Idle | Zero | ||||||||||
| Loyale PFI (4) | 1.0-2.0 | ||||||||||
| Loyale TBI: White & Black Wire Terminals (3) | 0.1-0.5 | ||||||||||
| XT & XT6: White & Black/Red Wire Terminals (3) | 1.0-2.0 | ||||||||||
|
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AIRFLOW SENSOR RESISTANCE (LEGACY) (1)
| Terminal | Specification | ||
|---|---|---|---|
| Red Wire & Ground | One Megohm (Min.) | ||
| White Wire & Ground | One Megohm (Min.) | ||
| Black Wire & Ground | One Megohm (Min.) | ||
| Black/Red Wire & Ground | Zero Ohm | ||
|
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AIR TEMP SENSOR RESISTANCE (JUSTY CARB.)(1)
| Temperature | Ohms | ||
|---|---|---|---|
| 68°F (20°C) | 2000-3000 | ||
| 176°F (80°C) | 270-370 | ||
|
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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.