2023 SUBARU BRZ wiring

Seatbelt Pretensioners
45
Seat, Seatbelt and SRS Airbags1
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When you sell your vehicle, we urge
you to inform the bu yer that the vehicle
is equipped with seatbelt
pretensioners. Also, notify the buyer of
the contents in this section.■ Front seatbelt with Shoulder
Belt PretensionerThe pretensioner sensor also serves as
follows.
 Front impact sensor
 Side impact sensor
 Rollover sensor
If the sensor detects a certain predeter-
mined amount of force during frontal or
side collisions or rollover accidents, any
seatbelt that has a se atbelt pretensioner is
quickly drawn back in by the retractor to take up the slack so
that the belt more
effectively restrains the seat occupant.
The front seatbelt pretensioner includes a
tension reducing device which limits the
peak forces exerted by the seatbelt on the
occupant in the event of a collision. The
front passenger's side adaptive force
limiter will select a reducing load to suit the
body size of the occupant as detected by
the occupant detection sensor.
When a seatbelt pretensioner is activated,
an operating noise will be heard and a
small amount of smoke will be released.
These occurrences are normal and not
harmful. This smoke does not indicate a
fire in the vehicle.
Once the seatbelt pretensioner has been
activated, the seatbelt retractor remains
locked. Consequently, the seatbelt cannot
be pulled out and retracted and therefore
must be replaced.
■ System MonitorsA diagnostic system continually monitors
the readiness of the seatbelt pretensioner
with the ignition switch in the “ON” posi-
tion. The seatbelt pr etensioners share the
control module with the SRS airbag
system. Therefore, if any malfunction
occurs in a seatbelt pretensioner, the SRS
airbag system warning light will illuminate. For details, refer to "SRS Airbag System

Monitors" P87.
■ System Servicing
100121
WARNING
When discarding a seatbelt
retractor 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 SRS
airbag 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 SRS airbag
systems. For required servicing
of the seatbelt pretensioner,
consult your nearest SUBARU
dealer.
CAUTION
For the locations of the sensors and
control modules, refer to "Compo-
nents" P68.
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SRS Airbag (Supplemental Restraint System Airbag)
69
Seat, Seatbelt and SRS Airbags1
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120
2
3
4
6
14
9
7
5
10
11
13
12
8
15
21
22
23
17
16
19
18
102764
1) Front impact sensor (left-hand side)
2) Front impact sensor (right-hand side)
3) SRS airbag system warning light
4) Frontal airbag module (driver’s side)
5) Airbag control module (including impact
sensor and rollover sensor)
6) Front passenger’s frontal airbag ON
and OFF indicator
7) Frontal airbag module (front
passenger’s side)
8) Seatbelt buckle switch (front
passenger’s side)
9) Curtain airbag module (right-hand side)
10) Side impact sensor (door right-hand
side)
11) Side airbag module (front passenger’s
side)
12) Seatbelt pretensioner and adaptive
force limiter (front passenger’s side)
13) Side impact sensor (center pillar right-
hand side)
14) Airbag wiring
15) Side impact sensor (rear wheel house
right-hand side)
16) Front passenger’s occupant detection
sensors
17) Side impact sensor (rear wheel house
left-hand side)
18) Side airbag module (driver’s side)
19) Side impact sensor (center pillar left-
hand side)
20) Seatbelt pretensi oner (driver’s side)
21) Side impact sensor (door left-hand side)
22) Knee airbag module (driver’s side)
23) Curtain airbag module (left-hand side)
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SRS Airbag (Supplemental Restraint System Airbag)
88
- Right-hand side
- Left-hand side
 Airbag control module (including
impact sensor and rollover sensor)
 Frontal airbag module
- Driver’s side
- Front passenger’s side
 Knee airbag module
- Driver’s side
 Side impact sensor
- Center pillar left-hand side
- Center pillar right-hand side
- Forward of rear wheel house left-
hand side
- Forward of rear wheel house right-
hand side
- Door left-hand side
- Door right-hand side
 Side airbag module
- Driver’s side
- Front passenger’s side
 Curtain airbag module
- Right-hand side
- Left-hand side
 Front seatbelt pretensioner and adap-
tive force limiter
- Front passenger's side
 Front seatbelt pretensioner
- Driver's side
 Seatbelt buckle switch
- Front passenger’s side 
Front passenger’s occupant detection
sensor
 Front passenger’s frontal airbag ON
and OFF indicator
 All related wiring
■ SRS Airbag System
Servicing
WARNING
If the warning light exhibits any of
the following conditions, immedi-
ately stop the vehicle in a safe
place, and consult a SUBARU
dealer. Unless a technician checks
and repairs the system as needed,
the seatbelt pretensioners and/or
the SRS airbag will not operate
properly in the event of a collision,
which may result in injury. Flashing or flickering of the
warning 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
WARNING
 When discarding an airbag
module or scrapping the entire
vehicle damaged by a collision,
consult 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.
Tampering 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 indicated in the following list,
have the work performed by an
authorized SUBARU dealer. The
SRS airbag control module, impact
sensors and airbag modules are
stored in these areas.
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SRS Airbag (Supplemental Restraint System Airbag)
89
Seat, Seatbelt and SRS Airbags1
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In the event that the SRS airbag is
deployed, replacement of the system
should be performed only by an autho-
rized SUBARU dealer. When the
components of the SRS airbag system
are replaced, use only genuine
SUBARU parts.
NOTEIn the following cases, contact your
SUBARU dealer as soon as possible.
 The front part of the vehicle was
involved in an accident in which only
the driver’s SRS fron tal 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 ei ther roof side (from
the front pillar to a point over the rear
seat) is scratched, cracked, or other-
wise damaged.
 The center pillar, door, 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 otherwise
damaged.
 The rear part of the vehicle was
involved in an accident in which no
SRS airbag was deployed.
■ Precautions against Vehicle
Modification
Under the center of the instru-
ment panelOn both the righ t and left sides at
the front of the vehicle Steering wheel and column and
nearby areas Bottom of the steering 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Inside each door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
WARNING
 To avoid accidental activation of
the system or rendering the
system inoperative, which may
result in serious injury, no modifi-
cations 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
microphone or any other
accessory to a front pillar, a
center pillar, a rear pillar, the
windshield, a side window or
any other cabin surface that
would be near a deploying
SRS curtain airbag.
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SRS Airbag (Supplemental Restraint System Airbag)
90
Always consult your SUBARU dealer if
you want to install any accessory parts on
your vehicle.
■ How to Contact the Vehicle
Manufacturer concerning
Modifications for Persons
with Disabilities That May
Affect the Advanced Airbag
SystemChanging or moving any parts of the front
seats, rear seat, se atbelts, front bumper,
front side frame, radiator panel, instru-
ment panel, combination meter, steering
wheel, steering colu mn, tire, suspension
or floor panel can affect the operation of
the SUBARU advanced airbag system. If
you have any questions, you may contact
the following SUBARU distributors.
of Columbia>
Subaru of America, Inc.
Customer Advocacy Department
One Subaru Drive
P.O. Box 9103
Camden, NJ 08101-9877
1-800-SUBARU3 (1-800-782-2783)

Subaru Hawaii
2850-A Pukoloa St., 
Honolulu, HI 96819
877-215-0338

- Installation of additional elec- trical/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.- Modifications on or inside the
door panels for the purpose of
a speaker replacement or
sound insulation
 The impact sensors, which detect
the pressure of an impact, are
located in the doors. Do not
modify any components of the
doors or door trims, such as the
addition of door speakers for
example. Any modifications to
the doors will create a risk of the
airbag system becoming inopera-
tive or unintended airbag deploy-
ment.
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, winches, snow plow,
skid plate, etc.) other than
genuine SUBARU accessory
parts to the front end. 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
center pillar or specified for indi-
vidual vehicle models in this
Owner’s Manual. Attachment of any equipment
(side steps or side sill protectors,
etc.) other than genuine SUBARU
accessory parts to the side body.
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Rear View Camera
263
Starting and Operating7
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the switch. The vehicle speed at that
moment will be memorized and treated as
the new set speed.
When setting the displayed unit as
“MPH”: 
The set speed can be decreased 1 mph
(1.6 km/h) each time by pushing the cruise
control switch to the “-SET” side.
When setting the displayed unit as
“km/h”: 
The set speed can be decreased 1 km/h
(0.6 mph) each time by pushing the cruise
control switch to the “-SET” side.▼ To decrease the speed (by brake
pedal)
1. Depress the brake pedal to release
cruise control temporarily.
2. When the speed decreases to the
desired speed, push the cruise control
switch to the “-SET” side once. Now the
desired speed is set and the vehicle will
keep running at that speed without
depressing the accelerator pedal.■ Cruise Control Indicator
LightRefer to "Combination Meter Settings"
 P130.
7-19. Rear View CameraA rear view camera is attached to the
trunk lid. When the ignition switch is in the
“ON” position and the shift lever (MT
models) or select lever (AT models) is set
to “R”, the rear view camera automatically
displays the rear view image behind the
vehicle on the center information display.
WARNING
 Since the rear view camera uses a
wide-angle lens, the image on the
monitor is diffe rent from the
actual view in terms of distance.
702799
 Since the range of the image on
the monitor is limited, always
check the rear view and the
surrounding area with your eyes
and mirrors, and move backward
at a slow speed. Moving back-
ward only by checking the rear
view image from the camera
could cause an accident. Do not disassemble or modify the
camera, switch or wiring. If
smoke comes out or you smell a
strange odor, stop using the rear
view camera immediately.
Contact your SUBARU dealer for
an inspection. Continued use
may result in accident, fire or
electric shock.
CAUTION
 When washing your vehicle with
a high-pressure washer, do not
allow water to touch the camera
directly. Entry of water in the
camera lens may result in
condensation, malfunction, fire
or electric shock. Since the camera is a precision
device, do not subject it to strong
impacts. Otherwise, malfunction,
fire or electric shock may occur.
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Rear View Camera
264NOTEDo not wipe the camera with
alcohol, benzine or paint thinner.
Otherwise, discoloration may occur.
To remove contamination, wipe the
camera with a cloth moistened with a
diluted neutral detergent. Then wipe it
with a soft, dry cloth. 
When waxing the vehicle, be careful
not to apply the wax to the camera. If it
comes in contact with the camera,
moisten a clean cloth with a diluted
neutral detergent to remove the wax.
 The camera lens has a hard coating
to help prevent scratches. However,
when washing the vehicle or cleaning
the camera lens, be careful not to
scratch the camera lens. Do not use a
washing brush directly on the camera
lens. The image quality of the rear view
camera may deteriorate.
 Strong light shined on the camera
lens may develop vertical lines around
the light source. This is not a malfunc-
tion.
 Under the fluorescent light, the
display may flicker. However, this is
not a malfunction.
 The image of the rear view camera
may be slightly different from the
actual color of the objects.
 If there is a malfunction on the
center information display, refer to
"Malfunctions of the Center Informa-
tion Display" P327.
■ How to Use the Rear View
CameraWhen the shift lever/se lect lever is set to
“R”, the rear view camera automatically
displays the rear view image from the vehicle. When the lever is set to other

positions, the image before setting to “R”
is displayed.
1. Set the ignition switch to “ON”.
2. Set the shift lever/ select lever to “R”.
NOTEThe image of the rear view camera is
horizontally reversed as is the case
with the vehicle inside mirror or the
outside mirror.
 When “Rear Camera Delay Control”
is on, the rear view image from the rear
view camera will be displayed on the
center information display for a certain
amount of time after the shift lever (MT
models) or select lever (AT models) is
shifted from “R” to another position.
When any of the following conditions
are met, the rear view image will be
canceled: - The select lever is shifted to “P”
(AT models)
- The vehicle speed becomes
approximately 5 mph (8 km/h) or
more
- The parking brake is engaged
- 9 seconds have elapsed since
the shift lever (MT models) or select
lever (AT models) was shifted from
“R” to another position
 If mud or snow sticks to or is
frozen on the camera, you must
be very careful when removing it.
Otherwise, damage to the camera
may cause a fire or electric shock.
Pour water or lukewarm water
over the camera to remove mud
and ice, and wipe it with a soft,
dry cloth. Do not put a flame close to the
camera or wiring. Otherwise,
damage or fire may occur. When replacing the fuse, be sure
to use a fuse with the specified
rating. Use of a fuse with a
different rating may result in a
malfunction. If you use the rear view camera
for a long time wh ile the engine is
not operated, the battery may
become completely discharged.
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Maintenance Precautions
340NOTESUBARU does not endorse the use of
non-SUBARU approved flushing sys-
tems and strongly advises against per-
forming these services on a SUBARU
vehicle. Non-SUBARU approved flush-
ing systems use chemicals and/or sol-
vents which have not been tested or
approved by SUBARU. SUBARU war-
ranties do not cover any part of the
vehicle which is damaged by adding or
applying chemicals and/or solvents
other than those approved or recom-
mended by SUBARU.
■ Before Checking or
Servicing in the Engine
Compartment
■When Checking or Servicing
in the Engine Compartment
Do not tamper wi th the wiring of
the SRS airbag system or seatbelt
pretensioner system, or attempt
to take its connectors apart, as
that may activate the system or it
can render it inoperative. NEVER
use a circuit tester for these
wiring. If your SRS airbag or
seatbelt pretensioner needs
service, consult your nearest
SUBARU dealer. Check the inside of the engine
compartment to see if there are
any cloths and tools left. If they
are left inside, they may be a
cause of malfunction and fire.
WARNING
 Always stop the engine and apply
the parking brake to prevent 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. When the ignition switch is in the
“ON” position, the cooling fan
may operate suddenly even when
the engine is stopped. If your
body or clothes come into
contact with a rotating fan, that
could result in serious injury. To
avoid risk of injury, always turn
the push-button i gnition switch to
the “OFF” position and confirm
that the operation indicator on
the switch is turn ed off. Then take
the access key fob out from the
vehicle.
 Before performing any servicing
on a vehicle equipped with a
remote engine start system
temporarily place that system in
the service mode to prevent it
from unexpectedly starting the
engine.
B02092
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