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.
1994 Subaru Loyale AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Injector Circuit Tests
- Check Fuel Injector Operation - Ensure there is injector operation using a stethoscope or screwdriver to hear operating sounds while engine is cranked. If operating sounds are not heard, go to next step. If operating sounds are heard, verify fuel pressure. See FUEL PRESSURE under FUEL SYSTEM.
- Check Fuel Injector Resistance - Disconnect each injector connector. Ensure there is less than 2 ohms resistance between injector terminals No. 1 and 2. If specified resistance is present, go to next step. If specified resistance is not present, replace fuel injector(s).
- Check Injector Resistance - Ensure there is more than one megohm of resistance between each terminal of injector side of connector and ground. If resistance is not as specified, replace injector(s). If resistance is as specified, replace ECU.
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.
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