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Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.5L) - Introduction >> Inspection Mode >> Procedure >> General Scan Tool
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General Scan Tool

  1. Check that no DTC remains after clearing memory. Refer to ENGINE (DIAGNOSTICS) (STI)>CLEAR MEMORY MODE .
  2. Warm up the engine.
  3. Install the delivery mode fuse (A).
    CAUTION: Do not use any fuses that are installed on the vehicle.
    G10265783Courtesy of SUBARU OF AMERICA, INC.
  4. Connect the general scan tool to data link connector located in the lower portion of the instrument panel (on the driver's side).
    CAUTION: Do not connect the scan tools except for Subaru Select Monitor and general scan tool.
    G08315883Courtesy of SUBARU OF AMERICA, INC.
  5. Start the engine.
    NOTE: Depress the clutch pedal when starting engine.
  6. Turn the neutral position switch to ON using gear shift lever.
  7. Keep the engine speed in 2, 500 - 3, 000 rpm range for 40 seconds.
  8. Place the gear shift lever in 1st gear and drive the vehicle at 5 to 10 km/h (3 to 6 MPH).
    NOTE:
    • For AWD model, release the parking brake.
    • The rotating speed difference between front and rear wheels may illuminate the ABS warning light, but this does not indicate a malfunction. When engine control system diagnosis is finished, perform the VDC memory clearance procedure of self-diagnosis function. Refer to VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)>CLEAR MEMORY MODE .
  9. Using the general scan tool, check for DTC and record the result (s).
    NOTE: