Subaru Legacy 2005 Service Manual page 1261

8. General Scan Tool
A: OPERATION
1. HOW TO USE GENERAL SCAN TOOL
1) Prepare a general scan tool (general scan tool)
required by SAE J1978.
2) Open the cover and connect the general scan
tool to data link connector located in the lower por-
tion of the instrument panel (on the driver's side).
3) Using the general scan tool, call up DTC and
freeze frame data.
General scan tool functions consist of:
2. MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)
Refer to data denoting the current operating condition of analog input/output, digital input/output or the pow-
ertrain system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.
PID
Number of emission-related powertrain DTC and malfunction indicator light status and diag-
01
nosis support information
03 Fuel system control status
04 Calculated engine load value
05 Engine coolant temperature
06 Short term fuel trim
07 Long term fuel trim
0B Intake manifold absolute pressure
0C Engine revolution
0D Vehicle speed
0E Ignition timing advance
0F Intake air temperature
10 Air flow rate from mass air flow sensor
11 Throttle valve absolute opening angle
13 Check whether oxygen sensor is installed
15 Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor
1C Supporting OBD system
21 Driving distance after MIL illuminates
24 A/F value and A/F sensor output voltage
NOTE:
Refer to general scan tool manufacturer's operation manual to access current powertrain diagnostic data
(MODE $01).
General Scan Tool
(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 non-continuously monitored sys-
tems
(6) MODE $07: Request on-board monitoring
test results for continuously monitored systems
(7) MODE $09: Request vehicle information
Read out the data according to repair procedures.
(For detailed operation procedure, refer to the gen-
eral scan tool operation manual.)
NOTE:
For details concerning DTCs, refer to the List of Di-
agnostic
EN(H4DOTC)(diag)-62, List of Diagnostic Trouble
EN-02097
Code (DTC).>
Data
EN(H4DOTC)(diag)-21
ENGINE (DIAGNOSTICS)
Trouble Code (DTC).
mmHg, kPa, inHg or
<Ref. to
Unit of measure
—
—
%
°C or °F
%
%
psig
rpm
km/h or MPH
°
°C or °F
gm/s
%
—
V and %
—
km or miles
— and V