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Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.0L) - Introduction >> General Scan Tool >> Operation >> How To Use General Scan Tool
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How To Use General Scan Tool

  1. Prepare a scan tool (general scan tool) required by SAE J1978.
  2. Connect the general scan tool to data link connector located in the lower portion of the instrument panel (on the driver's side).
    G08315883Courtesy of SUBARU OF AMERICA, INC.
  3. Using the general scan tool, call up each data. General scan tool functions consist of:
    1. MODE $01: Current powertrain diagnostic data
    2. MODE $02: Powertrain freeze frame data
    3. MODE $03: Emission-related powertrain DTC
    4. MODE $04: Clear/Reset emission-related diagnostic information
    5. MODE $06: Request on-board monitoring test results for continuously monitored systems
    6. MODE $07: Initial emission-related powertrain DTC
    7. MODE $08: Request control for on-board system, test, and component
    8. MODE $09: Request vehicle information
    9. MODE $0A: Emission-related DTC (with Permanent Status)
  4. Read out the data according to repair procedures. (For detailed operation procedures, refer to the general scan tool operation manual.)
    NOTE: For details concerning DTC, refer to "List of Diagnostic Trouble Code (DTC)". Refer to ENGINE (DIAGNOSTICS) (W/O STI)>LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .
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