Page 1777 of 2890
1Engine control module (ECM)
2Ignition coil
3Ignitor
4Crankshaft position sensor
5Camshaft position sensor
6Throttle position sensor
7Fuel injectors
8Pressure regulator
9Engine coolant temperature sensor
10Mass air flow sensor
11Idle air control solenoid valve
12Purge control solenoid valve
13Fuel pump
14PCV valve
15Air cleaner
16Canister
17Main relay
18Fuel pump relay
19Fuel filter
20Front catalytic converter
21Rear catalytic converter
22EGR valve
23EGR control solenoid valve
24Radiator fan
25Radiator fan relay
26Pressure sources switching solenoid valve
27Knock sensor
28Back-pressure transducer
29Front oxygen sensor
30Rear oxygen sensor
31Pressure sensor
32A/C compressor
33Inhibitor switch
34CHECK ENGINE malfunction indicator lamp (MIL)
35Tachometer
36A/C relay
37A/C control module
38Ignition switch
39Transmission control module (TCM)
40Vehicle speed sensor
41Data link connector (Subaru select monitor)
42Data link connector (OBD-II general scan tool)
43Two way valve
44Filter
9
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General
Page 1779 of 2890
1Engine control module (ECM)
2Ignition coil
3Ignitor
4Crankshaft position sensor
5Camshaft position sensor
6Throttle position sensor
7Fuel injectors
8Pressure regulator
9Engine coolant temperature sensor
10Mass air flow sensor
11Idle air control solenoid valve
12Purge control solenoid valve
13Fuel pump
14PCV valve
15Air cleaner
16Canister
17Main relay
18Fuel pump relay
19Fuel filter
20Front catalytic converter
21Rear catalytic converter
22EGR valve
23EGR control solenoid valve
24Radiator fan
25Radiator fan relay
26Pressure sources switching solenoid valve
27Knock sensor
28Back-pressure transducer
29Front oxygen sensor
30Rear oxygen sensor (Except California model)
31Pressure sensor
32A/C compressor
33Inhibitor switch
34CHECK ENGINE malfunction indicator lamp (MIL)
35Tachometer
36A/C relay
37A/C control module
38Ignition switch
39Transmission control module (TCM)
40Vehicle speed sensor 2
41Data link connector (For Subaru select monitor)
42Data link connector (For Subaru select monitor and OBD-II
general scan tool)
43Two way valve
44Rear oxygen sensor (California model only)
45Filter
11
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General
Page 1782 of 2890
2. Electrical Components Location
A: ENGINE
1. MODULE
OBD0003A
1Engine control module (ECM)
2Data link connector (for Subaru select monitor only)
3Data link connector (for Subaru select monitor and OBD-II
general scan tool)
4Test mode connector
5CHECK ENGINE malfunction indicator lamp (MIL)
OBD0004AOBD0005D
OBD0006BB2M0470A
14
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location
Page 1796 of 2890
B2M0470C
3. Diagnosis System
A: CHECK ENGINE MALFUNCTION
INDICATOR LAMP (MIL)
1. ACTIVATION OF CHECK ENGINE MALFUNCTION
INDICATOR LAMP (MIL)
1) When ignition switch is turned to ON (engine off), the
CHECK ENGINE malfunction indicator lamp (MIL) in the
combination meter illuminates.
NOTE:
If the MIL does not illuminate, perform diagnostics of the
CHECK ENGINE light circuit or the combination meter cir-
cuit.
function Indicator Lamp (MIL), 2-7 [T700]”.>
OBD0053A
2) After starting the engine, the MIL goes out. If it does not,
either the engine or the emission control system is mal-
functioning.
OBD0054A
3) If the diagnosis system senses a misfire which could
damage the catalyzer, the MIL will blink at a cycle of 1 Hz.
OBD0055A
4) When ignition switch is turned to ON (engine off) or to
“START” with the test mode connector connected, the MIL
blinks at a cycle of 3 Hz.
28
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System
Page 1798 of 2890
3. CURRENT POWERTRAIN DIAGNOSTIC DATA
(MODE $01)
Refers to data denoting the current operating condition of
analog input/output, digital input/output and/or the power-
train system.
A list of the support data and PID (Parameter Identification)
codes are shown in the following table.
PID DataUnit of measure
01 Number of emission-related powertrain trouble codes and MIL status ON/OFF
03 Fuel system control status—
04 Calculated engine load value%
05 Engine coolant temperature°C
06 Short term fuel trim%
07 Long term fuel trim%
0B Intake manifold absolute pressurekPa
0C Engine revolutionrpm
0D Vehicle speedkm/h
0E Ignition timing advance°
10 Air flow rate from mass air flow sensor g/sec
11 Throttle valve opening angle%
13 Check whether oxygen sensor is installed.—
14 Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor—bank 1 V and %
15 Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor—bank 2 V and %
1C On-board diagnosis system—
NOTE:
Refer to OBD-II general scan tool manufacturer’s instruc-
tion manual to access generic OBD-II PIDs (MODE $01).
4. POWERTRAIN FREEZE FRAME DATA (MODE $02)
Refers to data denoting the operating condition when
trouble is sensed by the on-board diagnosis system.
A list of the support data and PID (Parameter Identification)
codes are shown in the following table.
PID DataUnit of measure
02 Trouble code that caused CARB required freeze frame data storage—
03 Fuel system control status—
04 Calculated engine load value%
05 Engine coolant temperature°C
06 Short term fuel trim%
07 Long term fuel trim%
0B Intake manifold absolute pressurekPa
0C Engine revolutionrpm
0D Vehicle speedkm/h
NOTE:
Refer to OBD-II general scan tool manufacturer’s instruc-
tion manual to access freeze frame data (MODE $02).
30
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System
Page 1806 of 2890
Function mode Contents Abbreviation Unit of measure
FB2Load data (Freeze frame data) LOAD F %
Engine coolant temperature signal (Freeze frame data) TW F °C
Throttle position signal (Freeze frame data) ALPH F %
Long term fuel trim (Freeze frame data) KBLR F %
Intake manifold absolute pressure signal (Freeze frame data) MANI F kPa
Engine speed signal (Freeze frame data) EREV F rpm
Vehicle speed signal (Freeze frame data) VSP F km/h
FB3Mass air flow signal (Freeze frame data) QA F (P0100) V
Pressure signal (Freeze frame data) PS F (P0105) V
Pressure signal (Freeze frame data) PR F (P0106) V
Engine coolant temperature signal (Freeze frame data) TW F (P0115) V
Throttle position signal (Freeze frame data) THV F (P0120) V
EGR control solenoid valve signal (Freeze frame data) EGR (P0403) —*1
Purge control solenoid valve signal (Freeze frame data) CPC (P0443) —*1
Start switch signal (Freeze frame data) STSW (P1100) —*1
Pressure sources switching solenoid valve signal (Freeze
frame data)BR1 (P1102) —*1
Radiator fan relay 1 signal (Freeze frame data) FAN1 (P1500) —*1
FC0 Clear memory — —
FD01 Compulsory fuel pump relay operation check FUEL PUMP —
FD02 Compulsory purge control solenoid valve operation check CPC SOL —
FD03 Compulsory radiator fan relay operation check RAD FAN —
FD04 Compulsory A/C relay operation check A/C RELAY —
FD05 Compulsory EGR control solenoid valve operation check EGR SOL —
FD07 Compulsory pressure control solenoid valve operation check PCV SOL —
FD08 Compulsory vent control solenoid valve operation check VENT SOL —
FD10Compulsory pressure sources switching solenoid valve opera-
tion checkBR SOL —
NOTE:
1) Subaru select monitor is also available for monitoring
information other than that used for check and repair of the
vehicle.
2) F42 (Maximum and minimum EGR system pressure
value) will not read accurately until the EGR flow diagno-
sis terminates.
EGR flow diagnosis terminates when LED No. 2 illuminates
at function mode FA4.
3) *1: “Hi” or “Low” is shown instead of measured value.
4) Because ASV solenoid valve, FICD solenoid valve and
air injection system diagnosis solenoid valve are not
installed, FD06, FD09 and FD11 will be displayed but non-
functional.
38
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System
Page 1818 of 2890
47. FB MODE FOR ENGINE
Function mode Abbreviation Contents Contents of display Page
FB0 INSPECT On-board diagnostics (Inspection)Current trouble code indicated by on-board
diagnostics after clear memory.58
FB1 OBD On-board diagnostics (Read data)Current trouble code indicated by on-board
diagnostics.32
FB2LOAD F Load data
Freeze frame data
Data stored at the time of trouble
occurrence, is shown on display.34
TW F Engine coolant temperature signal
ALPH F Throttle position signal
KBLR F Long term fuel trim
MANI FIntake manifold absolute pressure
signal
EREV F Engine speed signal
VSP F Vehicle speed signal
FB3QA F (P0100) Mass air flow signal
Freeze frame data
Data stored at the time of trouble
occurrence, is shown on display.35
PS F (P0105) Pressure signal
PR F (P0106) Pressure signal
TW F (P0115) Engine coolant temperature signal
THV F (P0120) Throttle position signal
EGR (P0403) EGR control solenoid valve signal
CPC (P0443) Purge control solenoid valve signal
STSW (P1100) Start switch signal
BR1 (P1102)Pressure sources switching sole-
noid valve signal
FAN1 (P1500) Radiator fan relay 1 signal
48. FC MODE FOR ENGINE
Function mode Abbreviation Contents Contents of display Page
FC0 MEMORY CLR Back-up memory clearFunction of clearing trouble code stored in
memory.57
49. FD MODE FOR ENGINE
Function mode Abbreviation Contents Contents of display Page
FD01 FUEL PUMP
Compulsory valve operation checkFunction of checking operation of fuel
pump relay, purge control solenoid valve,
radiator fan relay, A/C relay, EGR control
solenoid valve, pressure control solenoid
valve, vent control solenoid valve and pres-
sure sources switching solenoid valve.63
FD02 CPC SOL
FD03 RAD FAN
FD04 A/C RELAY
FD05 EGR SOL
FD07 PCV SOL
FD08 VENT SOL
FD10 BR SOL
NOTE:
Because ASV solenoid valve, FICD solenoid valve and air
injection system diagnosis solenoid valve are not installed,
FD06, FD09 and FD11 will be displayed but non-functional.
50
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System
Page 1821 of 2890
G3M0723
52. FUNCTION MODE: F00
—MODE DISPLAY—
SPECIFIED DATA:
Data at the left should be indicated.
Probable cause (if outside“specified data”)
1. Communication failure
(No communication method can be confirmed
with power ON.)
(1)Check loose or poor connectors, or
shortcircuit.
(2) Check type of cartridge.
2. Vehicle types cannot be identified (due to
communication failure).Check improper cartridge.
Replace with proper one.
OBD0673
53. FUNCTION MODE: F01
—BATTERY VOLTAGE (VB)—
CONDITION:
(1) Ignition switch ON
(2) Engine idling after warm-up
SPECIFIED DATA:
(1) 12±1 V
(2) 13±1 V
1. BatteryCheck battery voltage and specific gravity of
electrolyte.
2. Charging system(1)Measure regulating voltage under no loads.
(2) Check generator (as a single unit).
53
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System
