2009 SUBARU LEGACY alternator

3-32Instruments and controls
control system checked and re-
paired as necessary could cause
serious damage, which may not be
covered by your vehicle ’s warranty.
If this light illuminates steadily or blinks
while the engine is running, it may indicate
that there is a problem or potential
problem somewhere in the emission con-
trol system. ! If the light illuminates steadily
If the light illuminates steadily while driving
or does not go out after the engine starts,
an emission control system malfunction
has been detected.
You should have your vehicle checked by
an authorized SUBARU dealer immedi-
ately. NOTE
This light also illuminates when the fuel
filler cap is not tightened until it clicks.
If you have recently refueled your vehicle,
the cause of the CHECK ENGINE warning
light/malfunction indicator lamp coming on
could be a loose or missing fuel filler cap.
Remove the cap and retighten it until it
clicks. Make sure nothing is interfering
with the sealing of the cap. Tightening the
cap will not make the CHECK ENGINE
warning light/malfunction indicator lamp turn off immediately. It may take several
driving trips. If the light does not go out,
take your vehicle to your authorized
SUBARU dealer immediately. !
If the light is blinking
If the light is blinking while driving, an
engine misfire condition has been de-
tected which may damage the emission
control system.
To prevent serious damage to the emis-
sion control system, you should conform
to the following instructions. . Reduce vehicle speed.
. Avoid hard acceleration.
. Avoid steep uphill grades.
. Reduce the amount of cargo, if possi-
ble.. Stop towing a trailer as soon as
possible.
The CHECK ENGINE warning light/mal-
function indicator lamp may stop blinking
and illuminate steadily after several driv-
ing trips. You should have your vehicle
checked by an authorized SUBARU deal-
er immediately.
& Charge warning light
If this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly. If the light illuminates while driving or does
not go out after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt. If the belt is
loose, broken or if the belt is in good
condition but the light remains on, contact
your nearest SUBARU dealer immedi-
ately. &
Oil pressure warning light
CAUTION
Do not operate the engine with the
oil pressure warning light on. This
may cause serious engine damage.
If this light illuminates when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light illuminates while driving or does
not go out after the engine starts, stop the
engine at the first safe opportunity and
check the engine oil level. If the oil level is
low, add oil immediately. If the engine oil is
at the proper level but the light remains on,
contact your nearest SUBARU dealer
immediately.

11-20Maintenance and service
Spark plugs
CAUTION
. When disconnecting the spark
plug cables, always grasp the
spark plug cap, not the cables.
. Make sure the cables are re-
placed in the correct order.
It may be difficult to replace the spark
plugs. It is recommended that you have
the spark plugs replaced by your
SUBARU dealer.
The spark plugs should be replaced
according to the maintenance schedule
in the “Warranty and Maintenance Book-
let ”. &
Recommended spark plugs
2.5 L non-turbo models: FR5AP-11 (NGK)
2.5 L turbo models:
SILFR6A (NGK)
3.0 L models: ILFR6B (NGK) Drive belts
The power steering oil pump, alternator
and air conditioner compressor depend on
drive belts. Satisfactory performance re-
quires that belt tension be correct. &
2.5 L models
1) Power steering oil pump pulley
2) Alternator pulley
3) Air conditioner compressor pulley
4) Crank pulley
A) 22 lbf (98 N, 10 kgf)
B) 22 lbf (98 N, 10 kgf)

&Engine
Engine model EJ253
(2.5 L, SOHC, non-turbo) EJ255
(2.5 L, DOHC, turbo) EZ30D
(3.0 L, DOHC, non-turbo)
Engine type Horizontally opposed, liquid cooled 4 cylinder,
4 stroke gasoline engine Horizontally opposed, liquid cooled 6 cylinder,
4 stroke gasoline engine
Displacement cu-in (cc) 150 (2,457) 183 (3,000)
Bore 6Stroke in (mm) 3.92 63.11 (99.5 679.0) 3.51 63.15 (89.2 680.0)
Compression ratio 10.0 : 1 8.4 : 1 10.7 : 1
Firing order 1– 3–2 – 4 1
–6– 3–2– 5–4
& Electrical system
Battery type and capacity (5HR) 2.5 L models
MT 55D23L (12V-48AH)
AT 75D23L (12V-52AH)
3.0 L models 75D23L (12V-52AH)
Alternator 12V-110A
Spark plugs 2.5 L non-turbo models
FR5AP-11 (NGK)
2.5 L turbo models SILFR6A (NGK)
3.0 L models ILFR6B (NGK)Specifications
12-3
– CONTINUED –

12-8Specifications
&Fuse panel located in the engine compartment
A) FWD socket (AT models with non-turbo 2.5 L engine)
B) Main fuse Fuse
panel Fuse
rating Circuit
1 30A .ABS unit
. Vehicle dynamics control
unit
2 25A .Main fan (3.0 L models)
3 10A .Secondary air combina-
tion valve (turbo models)
4 25A .Sub fan (except 3.0 L
models)
5 25A .Main fan
6 20A .Audio
7 15A .Headlight (right side)
8 15A .Headlight (left side)
9 20A .Back-up light
10 15A .Horn
11 25A .Rear window defogger
12 15A .Fuel pump
13 15A .Automatic transmission
control unit
14 7.5A .Engine control unit
15 15A .Turn and hazard warning
flasher
16 20A .Parking switch
17 7.5A .Alternator