Obd-Ii General Scan Tool - Subaru IMPREZA 2004 Service Manual

9. OBD-II General Scan Tool

A: OPERATION
1. HOW TO USE OBD-II GENERAL SCAN
TOOL
1) Prepare a general scan tool (OBD-II general
scan tool) required by SAE J1978.
2) Connect the OBD-II general scan tool to data
link connector located in the lower portion of the in-
strument panel (on driver's side).
3) Using the OBD-II general scan tool, call up DTC
and freeze frame data.
OBD-II 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
Read out data according to repair procedures. (For
detailed operation procedures, refer to the OBD-II
General Scan Tool Operation Manual.)
NOTE:
For details concerning DTC, refer to the List of Di-
agnostic Trouble Code
EN(H4SO)(diag)-74, List of Diagnostic Trouble
Code (DTC).>
OBD-II General Scan Tool
IM-00072
(DTC). <Ref. to
EN(H4SO)(diag)-29
ENGINE (DIAGNOSTICS)