wiring SUBARU LEGACY 2009 5.G Owners Manual

1-26Seat, seatbelt and SRS airbags
.Airbag control module (including im-
pact sensors) . Frontal airbag module (driver ’s side)
. Frontal airbag module (front passen-
ger ’s side)
. Side airbag sensor (center pillar right-
hand side). Side airbag sensor (center pillar left-
hand side). Side airbag module (driver ’s side)
. Side airbag module (front passenger ’s
side). Curtain airbag sensor (rear wheel
house right-hand side). Curtain airbag sensor (rear wheel
house left-hand side) . Curtain airbag module (right-hand side)
. Curtain airbag module (left-hand side)
. Satellite safing sensor (under the rear
center seat) . Seatbelt pretensioner (driver ’s side)
. Seatbelt pretensioner (front passen-
ger ’s side)
. Seatbelt buckle switch (front passen-
ger ’s side)
. Front passenger ’s seatbelt tension
sensor. Front passenger ’s occupant detection
system weight sensor. Front passenger ’s occupant detection control module.
Front passenger ’s frontal airbag ON
and OFF indicator. All related wiring
WARNING
If the warning light exhibits any of
the following conditions, there may
be a malfunction in the seatbelt
pretensioners and/or SRS airbag
system. Immediately take your vehi-
cle to your nearest SUBARU dealer
to have the system checked. Unless
checked and properly repaired, the
seatbelt pretensioners and/or SRS
airbags will operate improperly (e.g.
SRS airbags may inflate in a very
minor collision or not inflate in a
severe collision), which may in-
crease the risk of injury. . Flashing or flickering of the warn-
ing light
. No illumination of the warning
light when the ignition switch is
first turned to the “ON ”position
. Continuous illumination of the
warning light
. Illumination of the warning light
while driving &
System servicing
WARNING
. When discarding a seatbelt re-
tractor assembly or scrapping
the entire vehicle damaged by a
collision, consult your SUBARU
dealer.
. Tampering with or disconnecting
the system ’s wiring could result
in accidental activation of the
seatbelt pretensioner and/or air-
bag or could make the system
inoperative, which may result in
serious injury. Do not use elec-
trical test equipment on any
circuit related to the seatbelt
pretensioner and airbag sys-
tems. For required servicing of
the seatbelt pretensioner, consult
your nearest SUBARU dealer.

!Components
Sedan
1) Airbag control module (including impact sensors)
2) Frontal airbag module (driver ’s side)
3) Frontal airbag module (front passenger ’s
side) 4) Front sub sensor (left-hand side)
5) Front sub sensor (right-hand side)
6) Side airbag module (driver
’s side)
7) Side airbag module (front passenger ’s
side) 8) Side airbag sensor (center pillar left-hand
side)
9) Side airbag sensor (center pillar right- hand side)
10) Airbag wiring
11) Seatbelt pretensioner (driver ’s side)
12) Seatbelt pretensioner (front passenger ’s
side)
13) Curtain airbag sensor (rear wheel house right-hand side)
14) Curtain airbag sensor (rear wheel house left-hand side)
15) Curtain airbag module (right-hand side)
16) Curtain airbag module (left-hand side)
17) Seatbelt buckle switch (front passenger ’s
side)
18) Front passenger ’s seatbelt tension sen-
sor
19) Front passenger ’s occupant detection
system weight sensor
20) Front passenger ’s occupant detection
control module
21) Front passenger ’s frontal airbag ON and
OFF indicator
22) SRS airbag system warning light
23) Satellite safing sensor (under the rear center seat)
Seat, seatbelt and SRS airbags
1-43
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1-44Seat, seatbelt and SRS airbags
Station wagon
1) Airbag control module (including impact sensors)
2) Frontal airbag module (driver ’s side)
3) Frontal airbag module (front passenger ’s
side)
4) Front sub sensor (left-hand side)
5) Front sub sensor (right-hand side) 6) Side airbag module (driver
’s side)
7) Side airbag module (front passenger ’s
side)
8) Side airbag sensor (center pillar left-hand side)
9) Side airbag sensor (center pillar right- hand side) 10) Airbag wiring
11) Seatbelt pretensioner (driver
’s side)
12) Seatbelt pretensioner (front passenger ’s
side)
13) Curtain airbag sensor (rear wheel house right-hand side)
14) Curtain airbag sensor (rear wheel house left-hand side)
15) Curtain airbag module (right-hand side)
16) Curtain airbag module (left-hand side)
17) Seatbelt buckle switch (front passenger ’s
side)
18) Front passenger ’s seatbelt tension sen-
sor
19) Front passenger ’s occupant detection
system weight sensor
20) Front passenger ’s occupant detection
control module
21) Front passenger ’s frontal airbag ON and
OFF indicator
22) SRS airbag system warning light
23) Satellite safing sensor (under the rear center seat)

1-64Seat, seatbelt and SRS airbags
Vehicle without SI-DRIVE
A diagnostic system continually monitors
the readiness of the SRS airbag system
(including front seatbelt pretensioners)
while the vehicle is being driven. The
SRS airbag system warning light “AIR-
BAG ”will show normal system operation
by lighting for approximately 6 seconds
when the ignition switch is turned to the“ ON ”position.
The following components are monitored
by the indicator: . Front sub sensor (right-hand side)
. Front sub sensor (left-hand side)
. Airbag control module (including im-
pact sensors). Frontal airbag module (driver ’s side)
. Frontal airbag module (front passen- ger
’s side)
. Side airbag sensor (center pillar right-
hand side). Side airbag sensor (center pillar left-
hand side). Side airbag module (driver ’s side)
. Side airbag module (front passenger ’s
side). Curtain airbag sensor (rear wheel
house right-hand side). Curtain airbag sensor (rear wheel
house left-hand side). Curtain airbag module (right-hand side)
. Curtain airbag module (left-hand side)
. Satellite safing sensor (under the rear
center seat) . Seatbelt pretensioner (driver ’s side)
. Seatbelt pretensioner (front passen-
ger ’s side)
. Seatbelt buckle switch (front passen-
ger ’s side)
. Front passenger ’s seatbelt tension
sensor . Front passenger ’s occupant detection
system weight sensor. Front passenger ’s occupant detection
control module. Front passenger ’s frontal airbag ON
and OFF indicator. All related wiring
WARNING
If the warning light exhibits any of
the following conditions, there may
be a malfunction in the seatbelt
pretensioners and/or SRS airbag
system. Immediately take your vehi-
cle to your nearest SUBARU dealer
to have the system checked. Unless
checked and properly repaired, the
seatbelt pretensioners and/or SRS
airbags will operate improperly (e.g.
SRS airbags may inflate in a very
minor collision or not inflate in a
severe collision), which may in-
crease the risk of injury. . Flashing or flickering of the warn-
ing light
. No illumination of the warning
light when the ignition switch is
first turned to the “ON ”position
. Continuous illumination of the
warning light
. Illumination of the warning light
while driving

&SRS airbag system servicing
WARNING
. When discarding an airbag mod-
ule or scrapping the entire vehi-
cle damaged by a collision, con-
sult your SUBARU dealer.
. The SRS airbag has no user-
serviceable parts. Do not use
electrical test equipment on any
circuit related to the SRS airbag
system. For required servicing of
the SRS airbag, consult your
nearest SUBARU dealer. Tamper-
ing with or disconnecting the system ’s wiring could result in
accidental inflation of the SRS
airbag or could make the system
inoperative, which may result in
serious injury.
CAUTION
If you need service or repair in areas
listed in the following, have an
authorized SUBARU dealer perform
the work. The SRS airbag control
module, impact sensors and airbag
modules are stored in these areas. . Under the center console
. Inside each front fender
. Steering wheel and column and
nearby areas
. Top of the dashboard on front
passenger ’s side and nearby
areas
. Each front seat and nearby area
. Inside each center pillar
. In each roof side (from the front
pillar to a point over the rear seat)
. Between the rear seat cushion
and rear wheel house on each side
. Under the rear center seat
In the event that the SRS airbag is
deployed, replacement of the system
should be performed only by an author-
ized SUBARU dealer. When the compo-
nents of the SRS airbag system are
replaced, use only genuine SUBARU parts.
NOTE
In the following cases, contact your
SUBARU dealer as soon as possible. . The front part of the vehicle was
involved in an accident in which the
only the driver ’s SRS frontal airbag or
both driver ’s and front passenger ’s
SRS frontal airbags did not deploy.. The pad of the steering wheel, the
cover over the front passenger ’s SRS
frontal airbag, or either roof side (from
the front pillar to a point over the rear
seat) is scratched, cracked, or other-
wise damaged.. Center pillar, rear wheel house or
rear sub frame, or an area near these
parts, was involved in an accident in
which the SRS side airbag and SRS
curtain airbag did not deploy.. The fabric or leather of either front
seatback is cut, frayed, or otherwisedamaged.. The rear part of the vehicle was
involved in an accident. Seat, seatbelt and SRS airbags
1-65
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1-66Seat, seatbelt and SRS airbags
&Precautions against vehicle modification
WARNING
To avoid accidental activation of the
system or rendering the system
inoperative, which may result in
serious injury, no modifications
should be made to any components
or wiring of the SRS airbag system.
This includes following modifica- tions: . Installation of custom steering
wheels
. Attachment of additional trim
materials to the dashboard
. Installation of custom seats
. Replacement of seat fabric or
leather
. Installation of additional fabric or
leather on the front seat
. Attachment of a hands-free mi-
crophone or any other accessory
to a front pillar, a center pillar, a
rear pillar, the windshield, a side
window, an assist grip, or any
other cabin surface that would be
near a deploying SRS curtainairbag. .
Installation of additional electri-
cal/electronic equipment such as
a mobile two-way radio on or
near the SRS airbag system
components and/or wiring is not
advisable. This could interfere
with proper operation of the
SRS airbag system.
CAUTION
Do not perform any of the following
modifications. Such modifications
can interfere with proper operation
of the SRS airbag system. . Attachment of any equipment
(bush bar, bullbar, winches, snow
plow, skid/sump plate, etc.) other
than genuine SUBARU acces-
sory parts.
. Modification of the suspension
system or front end structure.
. Installation of a tire of different
size and construction from the
tires specified on the vehicle
placard attached to the driver ’s
door pillar or specified for indivi-
dual vehicle models in this Own-er ’s Manual.
. Attachment of any equipment
(side steps or side sill protectors, etc.) other than genuine SUBARU
accessory parts to the side body.
Always consult your SUBARU dealer if
you want to install any accessory parts on
your vehicle.

!Side mirrors
After hitching a trailer to your vehicle,
check that the standard side mirrors
provide a good rearward field of view
without significant blind spots. If significant
blind spots occur with the vehicle ’s stan-
dard side mirrors, use towing mirrors that
conform with Federal, state/province and/
or other applicable regulations. ! Trailer lights
CAUTION
Direct splicing or other improper
connection of trailer lights may
damage your vehicle ’s electrical
system and cause a malfunction of
your vehicle ’s lighting system. Connection of trailer lights to your vehi-cle
’s electrical system requires modifica-
tions to the vehicle ’s lighting circuit to
increase its capacity and accommodate
wiring changes. To ensure the trailer lights
are connected properly, please consult
your SUBARU dealer. Check for proper
operation of the turn signals, the brake
lights and parking lights each time you
hitch up. ! Tires
WARNING
Never tow a trailer when the tem-
porary spare tire is used. The tem-
porary spare tire is not designed to
sustain the towing load. Use of the
temporary spare tire when towing
can result in failure of the spare tire
and/or less stability of the vehicle.
Make sure that all the tires on your vehicle
are properly inflated.
The recommended cold tire pressure
under trailer towing conditions is shown
in chapter 12, “Specifications ”and in
“ GAS STATION REFERENCE ”at the
end of this manual. Adjust the rear tire
pressure to the recommended pressure
when the tires are cold. Normal pressure
should be maintained in the front tires. Trailer tire condition, size, load rating and
proper inflation pressure should be in
accordance with the trailer manufacturer
’s
specifications.
In the event your vehicle gets a flat tire
when towing a trailer, ask a commercial
road service to repair the flat tire.
If you carry a regular size spare tire in your
vehicle or trailer as a precaution against
getting a flat tire, be sure that the spare
tire is firmly secured.
& Trailer towing tips
CAUTION
. Never exceed 45 mph (72 km/h)
when towing a trailer in hilly
country on hot days.
. When towing a trailer, steering,
stability, stopping distance and
braking performance will be dif-
ferent from normal operation. Forsafety ’s sake, you should employ
extra caution when towing a
trailer and you should never
speed. You should also keep the
following tips in mind: Driving tips
8-27
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11-4Maintenance and service
guard against getting oil or fluids
in your eyes. If something does
get in your eyes, thoroughly
wash them out with clean water.
. Do not tamper with the wiring of
the SRS airbag system or seat-
belt pretensioner system, or at-
tempt to take its connectors
apart, as that may activate the
system or it can render it inop-
erative. NEVER use a circuit
tester for these wiring. If your
SRS airbag or seatbelt preten-
sioner needs service, consult
your nearest SUBARU dealer.
& Before checking or servicing
in the engine compartment
WARNING
. Always stop the engine and set
the parking brake firmly to pre-
vent the vehicle from moving.
. Always let the engine cool down.
Engine parts become very hot
when the engine is running and
remain hot for some time after
the engine is stopped.
. Do not spill engine oil, engine
coolant, brake fluid or any other fluid on hot engine components.
This may cause a fire.
. Always remove the key from the
ignition switch. When the ignition
switch is in the “ON ”position,
thecoolingfanmayoperate
suddenly even when the engine
is stopped.
& When you do checking or
servicing in the engine com-
partment while the engine is running
WARNING
A running engine can be dangerous.
Keep your fingers, hands, clothing,
hair and tools away from the cooling
fan, belts and any other moving
engine parts. Removing rings,
watches and ties is advisable. Engine hood
To open the hood:
1. If the wiper blades are lifted off the
windshield, return them to their originalpositions.
2. Pull the hood release knob under the
instrument panel.

distilled water.Fuses
CAUTION
Never replace a fuse with one hav-
ing a higher rating or with material
other than a fuse because serious
damage or a fire could result.
The fuses are designed to melt during an
overload to prevent damage to the wiring
harness and electrical equipment. The
fuses are located in two fuse boxes. One
is located under the instrument panel
behind the fuse box cover on the driver ’s
seat side.
Open the lid that is located above the
hood release knob and pull it toward you
to remove it.
The other one is housed in the engine compartment. Maintenance and service
11-47
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Main fuse
Main fuse box
The main fuses are designed to melt
during an overload to prevent damage to
the wiring harness and electrical equip-
ment. Check the main fuses if any
electrical component fails to operate (ex-
cept the starter motor) and other fuses are
good. A melted main fuse must be
replaced. Use only replacements with the
same specified rating as the melted main
fuse. If a main fuse blows after it is
replaced, have the electrical system
checked by your nearest SUBARU dealer. Installation of accessories
Always consult your SUBARU dealer
before installing fog lights or any other
electrical equipment in your vehicle. Such
accessories may cause the electronic
system to malfunction if they are incor-
rectly installed or if they are not suited for
the vehicle.
Maintenance and service
11-49