Page 1449 of 2248

1CHECK ANY OTHER DTC P0130, P0133,
P0135, P0136, P0139 AND P0141 ON DIS-
PLAY.
: Check that Subaru Select Monitor or the
OBD-II general scan tool shows P0130,
P0133, P0135, P0136, P0139 and P0141.
: Inspect the relevant DTC using“11. Diagnostics
Chart with Trouble Code”.
Inspection of P0420 is not necessary after above.
: Go to step 2.
2
CHECK EXHAUST SYSTEM.
Check for gas leaks or air suction caused by loose or dis-
located nuts and bolts, and open hole at exhaust pipes.
: Check the following position of exhaust
sys-
tem.
Between cylinder head and front exhaust pipe.
Between front exhaust pipe and front catalytic
converter.
Between front catalytic converter and rear cata-
lytic converter.
: Repair or replace exhaust system.
: Go to step 3.
3
CHECK REAR CATALYTIC CONVERTER.
1) Separate rear catalytic converter from rear exhaust
pipe.
: Is there damage at rear face of rear cata-
lyst?
: Replace front and rear catalytic converters.
: Go to next step.
2) Remove front catalytic converter.
: Is there damage at rear face or front face of
front catalyst?
If there is damage in front catalyst, replace front catalytic
converter.
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11. Diagnostics Chart with Trouble Code
Page 1450 of 2248
OBD0331
AE: DTC P0441
—EVAPORATIVE EMISSION CONTROL
SYSTEM INCORRECT PURGE FLOW
(CPC
—F)—
DESCRIPTION:
The evaporative emission control system is employed to
prevent evaporative fuel from being discharged into ambi-
ent atmosphere. This system includes a canister, purge
control solenoid valve, fuel cut valve, their connecting lines,
etc.
Gasoline vapor evaporated from the fuel tank is intro-
duced into the canister located in the engine compartment
through the evaporation line, and is absorbed on activated
carbon in it. A fuel cut valve is also incorporated on the tank
fuel line.
The purge control solenoid valve is controlled by the
ECM and provides optimal purge control according to the
engine coolant temperature, engine load and vehicle
speed.
OBD0332A
244
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1451 of 2248
OBD0333A
The purge control solenoid valve is on the evaporation
line between canister and throttle body. It is built on the
below of intake manifold.
DTC DETECTING CONDITION:
Two consecutive trips with fault
1.Check transmission type.
AT
MT
Check AT/MT identification circuit.
2.Check any other DTC P0105, P0106, P0443
and P1102 on display.Inspect P0105, P0106, P0443 and P1102 using“11 .
Diagnostics Chart with Trouble Code [T1100]”.
It is unnecessary to inspect DTC P0441.
3.Check purge control solenoid valve operation.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
WIRING DIAGRAM:
LHD model
OBD0334
245
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1452 of 2248
WIRING DIAGRAM:
RHD model
B2M0456
246
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1453 of 2248

1
CHECK TRANSMISSION TYPE.
Refer to flow chart on page 245.
2CHECK ANY OTHER DTC P0105, P0106,
P0443 AND P1102 ON DISPLAY.
: Check that Subaru select monitor or the
OBD-II general scan tool shows P0105,
P0106, P0443 and P1102.
: Inspect the relevant DTC using“11. Diagnostics
chart with Trouble Code”.
: Go to step 3.
3CHECK PURGE CONTROL SOLENOID VALVE
OPERATION.
1) Turn ignition switch to OFF.
2) Connect test mode connector at the lower portion of
instrument panel (on the driver’s side), to the side of the
center console box.
3) Turn ignition switch to ON.
: Make sure that the ON/OFF operating sound
of purge control solenoid valve occurs at
about 0.3 Hz.
: Replace purge control solenoid valve.
: Go to next step.
4) Disconnect canister purge hose from canister.
: Blow through the canister purge hose to
check if pulsations occur.
: Check and repair loose connections, cracks, and
clogging in evaporation line.
: Replace purge control solenoid valve.
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11. Diagnostics Chart with Trouble Code
Page 1454 of 2248
OBD0335
AF: DTC P0443
—EVAPORATIVE EMISSION CONTROL
SYSTEM PURGE CONTROL VALVE CIRCUIT
MALFUNCTION (CPC)—
DESCRIPTION:
Refer to“AE: DTC P0441—EVAPORATIVE EMISSION
CONTROL SYSTEM INCORRECT PURGE FLOW—
[T11AE0]”.
DTC DETECTING CONDITION:
Two consecutive trips with fault
TROUBLE SYMPTOM:
Erroneous idling
1.Check output signal from ECM.
2.Check harness.
3.Check harness.
4.Check purge control solenoid valve.
5.Check power supply to purge control solenoid
valve.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
248
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11. Diagnostics Chart with Trouble Code
Page 1455 of 2248
WIRING DIAGRAM:
LHD model
OBD0334
WIRING DIAGRAM:
RHD model
B2M0456
249
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1456 of 2248
OBD0337A
1
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure voltage between ECM connector terminal and
body.
: Connector & terminal
(B84) No. 59—Body / 10 V, or more
: Go to step 2.
: Go to step 3.
OBD0337A
2
CHECK HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from purge control solenoid
valve.
3) Turn ignition switch to ON.
4) Measure voltage between ECM connector and body.
: Connector & terminal
(B84) No. 59—Body / 10 V, or more
: Repair short circuit of harness between ECM con-
nector and purge control solenoid valve connec-
tor.
: Go to next step.
OBD0338
5) Turn ignition switch to OFF.
6) Measure resistance between purge control solenoid
valve terminals .
: Terminals
No. 1—No. 2/1Ω, or less
: Replace purge control solenoid valve and ECM.
: Go to next.
: Is there poor contact in ECM connector?
: Repair poor contact in ECM connector.
: Replace ECM.
250
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code