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 SVX LSiFACTORY 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. Refer to FUEL PRESSURE under FUEL SYSTEM.
- Check Fuel Injector Power Circuit - Turn ignition off and disconnect each fuel injector connector. Ensure there is at least 10 volts between each injector connector terminal and ground. If at least 10 volts are present, go to next step. If at least 10 volts are not present, repair harness or connectors as necessary.
- Check Fuel Injectors - Measure resistance between connector terminals of each fuel injector. If resistance is 11-12 ohms, go to next step. If resistance is not 11-12 ohms, replace injector(s).
- Measure Voltage Between ECU Connectors & Fuel Injectors - Connect fuel injector connectors and turn ignition on. Measure voltage between ECU connector terminals and ground. Refer to the FUEL INJECTION & ECU HARNESS VOLTAGE TESTING table. If at least 5 volts are present, go to next step. If at least 5 volts are not present, repair or replace harness or connectors as necessary.
- Check ECU Ground Circuit Resistance Disconnect ECU 26-pin connector. Measure resistance between connector terminal No. 24 (Blue/Black wire) and ground and between terminal No. 25 (Black/Yellow wire) and ground. If resistance is more than zero ohms, repair harness or connectors between ECU and ground. Inspect ECU connector terminal. If ECU connector terminal is okay, replace ECU.
FUEL INJECTION & ECU HARNESS VOLTAGE TESTING
| ECU Terminal No. | Wire Color | Engine Cylinder No. | ||||
|---|---|---|---|---|---|---|
| 13 (1) | (WHT Wire) | 1 | ||||
| 12 (1) | (WHT/BLK Wire) | 2 | ||||
| 11 (1) | (WHT/RED Wire) | 3 | ||||
| 26 (1) | (WHT/BLU Wire) | 4 | ||||
| 1 (2) | (WHT/GRN Wire) | 5 | ||||
| 12 (2) | (WHT/YEL Wire) | 6 | ||||
|
||||||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.