Page 1193 of 2248

E: DIAGNOSTICS PROCEDURE FOR
SECURITY CONTROL MODULE POWER
SUPPLY/GROUND CIRCUIT
1. Check fuse and power supply circuit.
OK
Not OK
Replace fuse.
Repair or replace wiring harness.
2. Check ground circuit between security control
module and body.
OK
Not OK
Repair or replace wiring harness.
Go to next step on basic diagnostics procedure.
B6M0504A
1. CHECK FUSE AND POWER SUPPLY CIRCUIT.
1) Check fuse No. 25.
2) Measure voltage between main fuse box connector and
body.
Connector & terminal / Specified voltage:
(F35) No. 2—Body / 10 V, or more
B6M0448A
3) Disconnect connector from security control module.
4) Measure voltage between security control module con-
nector and body.
Connector & terminal / Specified voltage:
(B93) No. 8—Body / 10 V, or more
B6M0505A
5) Check fuse No. 3.
6) Turn ignition switch to ACC.
7) Measure voltage between fuse and relay box connec-
tor and body.
Connector & terminal / Specified voltage:
(i5) No. 13—Body / 10 V, or more
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6-2DIAGNOSTICS
6. Security System
Page 1194 of 2248
B6M0452A
8) Disconnect connector from security control module.
9) Measure voltage between security control module con-
nector and body.
Connector & terminal / Specified voltage:
(B93) No. 6—Body / 10 V, or more
B6M0497A
2. CHECK GROUND CIRCUIT BETWEEN SECURITY
CONTROL MODULE AND BODY.
1) Turn ignition switch to OFF.
2) Disconnect connector of security control module.
3) Measure resistance of harness connector between
security control module and body.
Connector & terminal / Specified resistance:
(B93) No. 9—Body / 10Ω, max.
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J: DIAGNOSTICS PROCEDURE FOR DOOR
LOCK/UNLOCK SWITCH SIGNAL
1. Check door lock/unlock switch input signal
for security control module.
Not OK
OK
Go to next step on basic diagnostics procedure.
2. Check door lock/unlock switch.
OK
Not OK
Replace door lock/unlock switch.
Repair or replace wiring harness between door lock/
unlock switch and security control module.
B6M0407A
1. CHECK DOOR LOCK/UNLOCK SWITCH INPUT
SIGNAL FOR SECURITY CONTROL MODULE.
1) Remove security control module without disconnecting
connector.
2) Close all the doors and rear gate (WAGON), and lock
with ignition key.
3) Measure voltage between security control module con-
nector and body.
Connector & terminal / Specified voltage:
(B93) No. 1—Body / 10 V, or more
NOTE:
When one of the door (driver, passenger or rear gate) lock
knobs is in unlocked position, the voltage may be 1 V, max.
4) Unlock the door with ignition key.
5) Measure voltage between security control module con-
nector and body.
Connector & terminal / Specified voltage:
(B93) No. 1—Body/1V,max.
2. CHECK DOOR LOCK/UNLOCK SWITCH.
Refer to 6-2 [W22B5] for inspection of door lock/unlock
switch.
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Page 1211 of 2248

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 (AT vehicles only)
27Knock sensor
28Back-pressure transducer (AT vehicles only)
29Front oxygen sensor
30Rear oxygen sensor
31Pressure sensor (AT vehicles only)
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) (AT vehicles only)
40ABS/TCS control module (TCS equipped models)
41Vehicle speed sensor
42Data link connector (Subaru select monitor)
43Data link connector (OBD-II general scan tool)
44Two way valve
5
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General
Page 1219 of 2248
4. SOLENOID VALVE, EMISSION CONTROL SYSTEM
PARTS AND IGNITION SYSTEM PARTS (LHD MODEL)
EQA0051
1Pressure sources switching solenoid valve
(AT vehicles only)
2Idle air control solenoid valve
3EGR valve (AT vehicles only)
4EGR control solenoid valve (AT vehicles only)
5Purge control solenoid valve
6Ignitor
7Ignition coil
OBD0021AOBD0022A
13
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location
Page 1223 of 2248
5. SOLENOID VALVE, EMISSION CONTROL SYSTEM
PARTS AND IGNITION SYSTEM PARTS (RHD MODEL)
EPA0086
1Pressure sources switching solenoid valve
2Idle air control solenoid valve
3EGR valve
4EGR control solenoid valve
5Purge control solenoid valve
6Ignitor
7Ignition coil
OBD0021AOBD0022A
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location
Page 1233 of 2248
OBD0008C
3. Diagnosis System
A: MALFUNCTION INDICATOR LAMP (MIL)
1. ACTIVATION OF 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) [T800]”.>
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.
27
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System
Page 1238 of 2248

OBD0057A
C: SUBARU SELECT MONITOR
1. HOW TO USE SUBARU SELECT MONITOR
1) Prepare Subaru select monitor and cartridge.
ST1 498307500 SELECT MONITOR KIT
ST2 498349601 CARTRIDGE
G3M0150
2) Turn ignition switch and Subaru select monitor switch to
OFF.
3) Insert cartridge into Subaru select monitor.
OBD0059A
4) Connect Subaru select monitor to data link connector.
Using data link connector for Subaru select monitor
only, connect Subaru select monitor to its data link con-
nector located in the lower portion of the instrument
panel (on the driver’s side), to the side of the center
console box.
OBD0669A
Using data link connector for Subaru select monitor
and OBD-II general scan tool;
(1) Connect ST to Subaru select monitor cable.
ST 498357200 ADAPTER CABLE
OBD0006C
(2) Open the cover and connect Subaru select monitor
to data link connector located in the lower portion of the
instrument panel (on the driver’s side), to the lower
cover.
CAUTION:
Do not connect scan tools except for Subaru select
monitor and OBD-II general scan tool.
32
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System