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
Ground Circuits
- Turn ignition off. Using DVOM, touch negative lead to ground. Using positive lead, backprobe each control unit ground terminal. See CONTROL UNIT GROUND TERMINAL IDENTIFICATION table. Resistance should be zero ohms. If resistance is not zero ohms, repair open to ground.
- Using DVOM, touch negative lead of voltmeter to a good ground. Touch positive lead of voltmeter to each ground terminal. With engine running, voltmeter should indicate less than one volt. If voltmeter reading is greater than one volt, check for open, corrosion or loose connection on ground lead.
CONTROL UNIT GROUND TERMINAL IDENTIFICATION
| Application | Wire Color | ||
|---|---|---|---|
| Justy | |||
| Carbureted | |||
| Terminal No. 12 | Black/Red | ||
| Terminal No. 16 | Black | ||
| Terminal No. 17 | Black | ||
| PFI | |||
| Terminal No. 1 | Black/Red | ||
| Terminal No. 1 | Black/Green | ||
| Terminal No. 2 | Black/Green | ||
| Terminal No. 10 | Black/Red | ||
| Terminal No. 13 | Black/Blue | ||
| Terminal No. 26 | Black/Blue | ||
| Legacy | |||
| Terminal No. 11 | Black/Red | ||
| Terminal No. 14 | Black/White | ||
| Terminal No. 15 | Black | ||
| Terminal No. 22 | Black/Red | ||
| Terminal No. 24 | Black/Yellow | ||
| Terminal No. 25 | Black/Yellow | ||
| Loyale | |||
| Terminal No. 9 | Black | ||
| Terminal No. 30 | Black/Red | ||
| Terminal No. 35 | Black | ||
| Terminal No. 42 | Black/Red | ||
| Terminal No. 44 | Black/Red | ||
| Terminal No. 50 | Black/Yellow | ||
| Terminal No. 51 | Black | ||
| SVX | |||
| Terminal No. 5 | Black/Red | ||
| Terminal No. 11 | Black/Red | ||
| Terminal No. 14 | Black/White | ||
| Terminal No. 22 | Black | ||
| Terminal No. 24 | Blue/Black | ||
| Terminal No. 25 | Black/Yellow | ||
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.