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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System (Diagnostics - Introduction) (STI)) >> Diagnostics for Engine Starting Failure >> Fuel Pump Circuit

Fuel Pump Circuit

WARNING: This page is about a different variant/trim than selected.
CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (STI)>Clear Memory Mode>OPERATION , and inspection mode Ref. to ENGINE (DIAGNOSTICS) (STI)>Inspection Mode>PROCEDURE .
  1. 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. Ref. to ENGINE (DIAGNOSTICS) (STI)>Active Test .

    Does the fuel pump emit operating sound?

    Yes: Check the fuel injector circuit. Ref. to ENGINE (DIAGNOSTICS) (STI)>Diagnostics for Engine Starting Failure>FUEL INJECTOR CIRCUIT .

    No: Display the DTC. Ref. to ENGINE (DIAGNOSTICS) (STI)>Read Diagnostic Trouble Code (DTC)>OPERATION .