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.
1993 Subaru SVXFACTORY OEM SERVICE PROCEDURE
Code 12: Starter Switch
NOTE:
Refer to illustration for ECU connector and terminal identification. See Figure
.
- Turn ignition switch to START position. Ensure starter motor is operating. If starter motor is operating correctly, go to step 4). If starter motor is not operating correctly, check inhibitor switch operation. Turn ignition switch to OFF position. Disconnect inhibitor switch connector, located near transaxle dipstick.
- Using an ohmmeter, check resistance between connector terminals No. 11 (Black/White wire) and No. 12 (Black/Yellow wire). Resistance should be zero ohms with transaxle in Park or Neutral. Resistance should be at least 1000 ohms when transaxle is shifted into any other position. If resistance is as specified, go to next step. If resistance is not as specified, repair inhibitor switch as necessary.
- Inspect starter assembly and repair as necessary. If starter assembly is okay, inspect and repair starter power supply circuit. Ensure vehicle security system is operating properly. Repair as necessary.
- Turn ignition switch to OFF position. Disconnect ECU connectors. Using a DVOM, check voltage between ECU connector B61, terminal No. 10, and ground while cranking engine.
- Voltage should be 9-12 volts. If voltage is not as specified, repair circuit between ECU connector and starter assembly. If voltage is as specified, check ECU connector terminals for good contact. Repair as necessary. If connector terminals are okay, 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.