Obd-Ii General Scan Tool - Subaru IMPREZA 2002 Service Manual

OBD-II GENERAL SCAN TOOL
ENGINE (DIAGNOSTICSI
PID
01
03
04
9. OBD-II General Scan Tool
Data Unit of measure
Number of emission-related powertrain trouble codes and MIL status
Fuel system control status
-
Calculated enaine load value
YO
ONIOFF
A: OPERATION
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 the data
link connector located in the lower portion of the in-
strument panel (on the driver's side).
1. HOW TO USE OBD-ll GENERAL SCAN
05
I
Enaine coolant temDerature
3) Using the OBD-ll general scan tool, call up diag-
nostic trouble code(s) 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 di-
agnostic trouble codes
(4) MODE $04: Clear/Reset emission-related
diagnostic information
Read out data according to repair procedures. (For
detailed operation procedures, refer to the OBD-ll
General Scan Tool Operation Manual.)
NOTE:
For details concerning diagnostic trouble codes, re-
fer to the List of Diagnostic Trouble Code (DTC).
<Ref. to EN(S0HC)-77, List of Diagnostic Trouble
Code (DTC).>
"C
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.
07
O B
O C
O D
O E
Long term fuel trim
YO
Engine revolution r Pm
Intake manifold absolute pressure kPa
Vehicle speed kmlh
lanition timina advance 0
13
l4
1 C
I
06
I
Short term fuel trim
I
Y O
Check whether oxygen sensor is installed.
-
V and Yo
V and
%
Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor-bank
1
Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor-bank
2
On-board diagnosis system
-
r
10
I
Air flow rate from Dressure sensor
I
glsec
I
11
I
Throttle valve opening angle
I
%
EN(S0HC)-30