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

8. 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) Open the cover and connect the OBD-II general
scan tool to the data link connector located in the
lower portion of the instrument panel (on the driv-
er's side).
2. MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)
Refers to data denoting the current operating condition of analog input/output, digital input/output and/or the
powertrain system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.
PID
01 Number of emission-related powertrain DTC and malfunction indicator light status
03 Fuel system control status
04 Calculated engine load value
05 Engine coolant temperature
06 Short term fuel trim (bank 1)
07 Long term fuel trim (bank 1)
08 Short term fuel trim (bank 2)
09 Long term fuel trim (bank 2)
0B Intake manifold absolute pressure
0C Engine revolution
0D Vehicle speed
0E Ignition timing advance
10 Air flow rate of manifold absolute pressure sensor
11 Throttle valve opening angle
13 Check whether oxygen sensor is installed.
Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (bank
24
1)
Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (bank
28
2)
1C On-board diagnostic system
NOTE:
Refer to OBD-II general scan tool manufacturer's instruction manual to access generic OBD-II PIDs (MODE
$01).
OBD-II General Scan Tool
3) Using the OBD-II general scan tool, call up DTC
and freeze frame data.
OBD-II general scan tool functions consist of:
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 DTCs, refer to the List of Di-
agnostic
EN(H6DO)(diag)-66, List of Diagnostic Trouble
Code (DTC).>
EN-02533
Data
EN(H6DO)(diag)-23
(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
Trouble Code
ENGINE (DIAGNOSTICS)
(DTC). <Ref. to
Unit of measure
ON/OFF
—
%
°C
%
%
%
%
kPa
rpm
km/h
°
g/sec
%
—
V and %
V and %
—