How To Use General Scan Tool

Prepare a general scan tool required by SAE J1978.
Open the cover and connect the general scan tool to data link connector (A) located in the lower portion of instrument panel (on the driver's side).

Fig 1: Identifying Data Link Connector
Courtesy of SUBARU OF AMERICA, INC.
Using the general scan tool, call up DTC and freeze frame data.

General scan tool functions consist of:

MODE $01: Current powertrain diagnostic data
MODE $02: Powertrain freeze frame data
MODE $03: Emission-related powertrain DTC
MODE $04: Clear/Reset emission-related diagnostic information
MODE $06: Request on-board monitoring test results for non-continuously monitored systems
MODE $07: Request on-board monitoring test results for continuously monitored systems
MODE $09: Request vehicle information 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 the List of Diagnostic Trouble Code (DTC). < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >