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.
Fuel Pump Circuit
- CHECK OPERATING SOUND OF FUEL PUMP.
Make sure that the fuel pump operates for two seconds when turning the ignition switch to ON.
NOTE: Fuel pump operation can be executed using the Subaru Select Monitor.
Refer to "Active Test" for the procedures. Refer to ENGINE (DIAGNOSTICS) (STI)>ACTIVE TEST .Does the fuel pump emit operating sound?
Yes: Check the fuel injector circuit. Refer to ENGINE (DIAGNOSTICS) (STI)>DIAGNOSTICS FOR ENGINE STARTING FAILURE>FUEL INJECTOR CIRCUIT .
No: Display the DTC. Refer to ENGINE (DIAGNOSTICS) (STI)>READ DIAGNOSTIC TROUBLE CODE (DTC)>OPERATION .
Use the Manual With the Right Hardware
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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.