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.
1992 Subaru Justy BaseFACTORY OEM SERVICE PROCEDURE
4-Cylinder Throttle Position Sensor: Loyale
- With ignition off, disconnect TPS connector. Using an ohmmeter, measure resistance between terminals "B" and "D". See Figure . Record reading. Measure resistance between terminals "B" and "C" with throttle fully closed, then measure with throttle fully open. Record readings.
- Ensure readings are as specified. See 4-CYLINDER THROTTLE POSITION SENSOR RESISTANCE table. If necessary, loosen attaching screws and rotate TPS until correct resistance is obtained. Replace TPS if resistance cannot be adjusted to specification.
4-CYLINDER THROTTLE POSITION SENSOR RESISTANCE
| Application | Ohms | ||
|---|---|---|---|
| Legacy | |||
| Terminals No. 2 & 3 | 12,000 | ||
| Terminals No. 2 & 4 | |||
| Throttle Fully Closed | 10,000-12,000 | ||
| Throttle Fully Open | 3000-5000 | ||
| Loyale | |||
| Terminals "B" & "D" | 3500-6500 | ||
| Terminals "B" & "C" | |||
| Throttle Fully Closed | Less Than 1000 | ||
| Throttle Fully Open | More Than 2400 | ||
Factory Service Tools
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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.