Page 601 of 2453
SB-4
General Description
SEAT BELT SYSTEM
3. THIRD SEAT BELT
(1) Outer seat belt RH ASSY (4) Inner seat belt LH ASSYTightening torque: N·m (kgf-m, ft-lb)
(2) Outer seat belt LH ASSY T1: 30 (3.1, 22)
(3) Inner seat belt RH ASSY T2: 38 (3.9, 28)
SB-00305
T1
T1
T1
(1)
(2)
(3)
(4)
T1
T2
T1
T1
T2
Page 602 of 2453

SB-5
General Description
SEAT BELT SYSTEM
B: CAUTION
•Before starting the work, turn the ignition switch
to OFF, disconnect the battery ground cable and
wait for 20 seconds or more.
•The pretensioner system has a backup power
source. The pretensioner might deploy if you do not
wait for 20 seconds or more before starting work.
•Do not drop or apply any impact to the preten-
sioner.
•If oil, grease or water gets on the pretensioner,
wipe it off immediately with a dry cloth.
•Do not expose the pretensioner to high tempera-
ture or flame.
•Do not allow current to flow through or voltage to
reach the pretensioner. Do not use a circuit tester
to check resistance of the pretensioner.
•Do not disassemble or attempt to repair the pre-
tensioner. If it is dented, cracked or deformed, re-
place it with a new one.
•Do not use the airbag or pretensioner parts from
other vehicles. Always replace parts with new
parts.
•When handling a seat belt with deployed preten-
sioner, wear gloves and goggles. Wash your hands
afterwards.
•Do not reuse a seat belt with deployed preten-
sioner.
•If material from the airbag enters the eyes or con-
tacts skin during deployment, wash it away with
clean water, and then consult a doctor.
C: PREPARATION TOOL
1. GENERAL TOOL
TOOL NAME REMARKS
TO RX® T50Used for removing and installing the inner seat belt assembly.
Page 603 of 2453
SB-6
Pretensioner Connector
SEAT BELT SYSTEM
2. Pretensioner Connector
A: PROCEDURE
Refer to air bag connectors in the airbag section.
Page 604 of 2453
SB-7
Inspection Locations After a Collision
SEAT BELT SYSTEM
3. Inspection Locations After a
Collision
A: INSPECTION
Check for the following, and replace with new parts
if necessary.
•Center pillar lower trim is discolored or cracked.
•Wire harness and connector are damaged.
Page 605 of 2453

SB-8
Seat Belt Warning System
SEAT BELT SYSTEM
4. Seat Belt Warning System
A: WIRING DIAGRAM
B: INSPECTION
TROUBLE SYMPTOM:
•Driver’s side seat belt warning light does not turn on or off.
•Warning buzzer does not beep.
Step Check Yes No
1CHECK BODY INTEGRATED MODULE.
1) Connect the Subaru Select Monitor to the
data link connector.
2) Turn the ignition switch to ON. (engine
OFF)
3) Turn the Subaru Select Monitor power to
ON.
4) Read the data of the driver’s seat belt
switch using the Subaru Select Monitor.
to LAN(diag)-12, OPERATION, Subaru Select
Monitor.>
Is the seat belt switch display
OFF?
Go to step 2.Go to step 6.
2CHECK SEAT BELT WARNING LIGHT.
Read the data of driver’s seat belt warning light
using the Subaru Select Monitor.
Is the seat belt warning light
display ON?
Go to step 3.Check the harness
between combina-
tion meter and
body integrated
unit.
3CHECK BODY INTEGRATED MODULE.
1) Connect the driver’s seat belt.
2) Read the data of driver’s seat belt switch
using Subaru Select Monitor.
Is the seat belt switch display
ON?
Go to step 4.Go to step 6.
4CHECK SEAT BELT WARNING LIGHT.
Read the data of driver’s seat belt warning light
using the Subaru Select Monitor.
Is the seat belt warning light
display OFF? Also, is the seat
belt warning light in the combi-
nation meter gone off?
Go to step 5.Check the harness
between ignition
switch and body
integrated unit.
5CHECK SEAT BELT WARNING BUZZER.
1) Connect the driver’s seat belt.
2) Turn the ignition switch to ON.
Does the buzzer beep? Go to step 6.Replace the body
integrated unit.
6CHECK DRIVER’S SEAT BELT BUCKLE
SWITCH.
1) Insert the tongue plate to the driver’s seat
belt buckle.
2) Measure the voltage between connector
(R8) and chassis ground.
Connector & terminal
(R8) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 7.Repair the har-
ness between
driver’s seat
buckle switch and
chassis ground.
7CHECK DRIVER’S SEAT BELT BUCKLE
SWITCH.
1) Disconnect the connector (R8) from driver’s
seat inner seat belt assembly.
2) Measure the resistance between connector
(R8) terminals and chassis ground.
Connector & terminal
(R8) No. 1 — Chassis ground:
(R8) No. 3 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 8.Replace the
driver’s seat inner
belt.
10, Front Seat
Belt.>
8CHECK BODY HARNESS.
Measure the voltage between connector
(R167) and chassis ground.
Connector & terminal
(R167) No. 11 (+) — Chassis ground (–):
Is the voltage more than 10 V?
Also, does the seat belt warn-
ing light come on?
Go to step 9.Repair or replace
the driver’s seat
inner belt and
body harness.
Page 606 of 2453

SB-9
Seat Belt Warning System
SEAT BELT SYSTEM
9CHECK BODY INTEGRATED MODULE.
Measure the voltage between connector (i84)
and chassis ground.
Connector & terminal
(i84) No. 4 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 10.Check the body
integrated unit.
10 CHECK COMBINATION METER.
Measure the voltage between connector
(R167) and chassis ground.
Connector & terminal
(R167) No. 20 (+) — Chassis ground (–):
Is the voltage more than 10 V?
Also, does the seat belt warn-
ing light come on?
Go to step 11.Replace the body
integrated unit.
11 CHECK COMBINATION METER.
Measure the voltage between connector (i10)
and chassis ground.
Connector & terminal
(i10) No. 9 (+) — Chassis ground (–):
Is the voltage more than 10 V?
Also, does the seat belt warn-
ing light come on?
Go to step 12.Check the combi-
nation meter.
12 CHECK SEAT BELT WARNING SYSTEM.
1) Disconnect the driver’s seat belt.
2) Turn the ignition switch to ON.
Does the seat belt warning
buzzer beep and warning light
blink for 6 seconds after turn-
ing the ignition switch to ON?
Go to step 13.Replace the body
integrated unit.
13 CHECK SEAT BELT WARNING SYSTEM.
Wait for 6 seconds from the step 12 condition
(seat belt warning buzzer beeps and warning
light blinks).
Does the seat belt warning
light repeat illuminating/blink-
ing every 15-seconds, and the
warning buzzer beep?
Go to step 14.Replace the body
integrated unit.
14 CHECK SEAT BELT WARNING SYSTEM.
Connect the driver’s seat belt buckle in the
step 13 condition (seat belt warning light
repeat illuminating/blinking every 15-seconds,
and warning buzzer beeps).
Does the seat belt warning
light go off and the buzzer
stop?
Go to step 15.Replace the body
integrated unit.
15 CHECK SEAT BELT WARNING SYSTEM.
Disconnect the driver’s seat belt.
Does the seat belt warning
light repeat illuminating/ blink-
ing every 15-seconds?
Go to step 16.Replace the body
integrated unit.
16 CHECK SEAT BELT WARNING SYSTEM.
1) Lift-up the vehicle.
NOTE:
Raise all wheels off floor.
2) Start the engine, and set the vehicle speed
to more than 15 km/h (9 MPH).
NOTE:
When there is a speed difference between front
and rear wheels, the ABS or VDC warning may
light, but this does not indicate a malfunction.
When diagnosis is complete, perform clear
memory for VDC.
ERATION, Subaru Select Monitor.>
Does the seat belt warning
light repeat illuminating/ blink-
ing every 15-seconds?
Go to step 17.Replace the body
integrated unit.
17 CHECK SEAT BELT WARNING SYSTEM.
Connect the driver’s seat belt in the step 16
condition.
Does the seat belt warning
light go off and the buzzer
stop?
Go to step 18.Replace the body
integrated unit.
18 Seat Belt Warning System
Disconnect the driver’s seat belt in the step 17
condition.
Does the seat belt warning
light repeat illuminating/ blink-
ing every 15-seconds?
Go to step 19.Replace the body
integrated unit.
19 CHECK SEAT BELT WARNING SYSTEM.
Connect the driver’s seat belt.
Does the seat belt warning
light go off and the buzzer
stop?
A temporary con-
tact failure.
Replace the body
integrated unit.
Step Check Yes No
Page 607 of 2453

SB-10
Front Seat Belt
SEAT BELT SYSTEM
5. Front Seat Belt
A: REMOVAL
1. OUTER SEAT BELT ASSEMBLY
1) Fold the backrest all the way forward, and then
move the front seat all the way forward.
2) Turn the ignition switch to OFF, disconnect the
battery ground cable, and wait more than 20 sec-
onds.
3) Remove the center pillar lower trim and center
pillar upper trim.
LOWER TRIM, REMOVAL, Side Trim.>
EI-44, CENTER PILLAR UPPER TRIM, REMOV-
AL, Side Trim.>
4) Remove the bolt, and then remove the shoulder
anchor.
5) Remove the bolt, and then remove the adjust-
able anchor assembly.
6) Disconnect connector (A) of the pretensioner,
and remove the lower anchor bolt and seat belt re-
tractor.
7) On the passenger side, disconnect connector of
the belt tension sensor.
CAUTION:
•Do not drop or subject the pretensioner to
any impact.
•Since the pretensioner and bracket are inte-
grated as a unit, do not disassemble them.
2. INNER SEAT BELT ASSEMBLY
1) Turn the ignition switch to OFF, disconnect the
battery ground cable, and wait more than 20 sec-
onds.
2) Remove the four bolts in the slide rail LH and
RH.
3) Disconnect the seat belt warning light connector
under the seat.
4) Remove the harness clips from the back of the
seat.
5) Remove the TORX® bolt, and then remove the
inner seat belt assembly.
SB-00152
SB-00153
SB-00306
(A)
SB-00319
SB-00307
Page 608 of 2453

SB-11
Front Seat Belt
SEAT BELT SYSTEM
B: INSTALLATION
1. OUTER SEAT BELT ASSEMBLY
Install in the reverse order of removal.
CAUTION:
•The parts of driver and passenger sides are
not the same. Before installation, make sure
that the correct part is used.
•Be careful not to twist the seat belts during
installation.
Tightening torque:
NENT, General Description.>
2. INNER SEAT BELT ASSEMBLY
Install in the reverse order of removal.
CAUTION:
•After the driver’s and passenger’s inner seat
belt assembly installation, check that the seat
belt buckle switch operates normally using the
Subaru Select Monitor in {Status Data} of “Air-
bag System”.
OF STATUS INFORMATION, OPERATION, Sub-
aru Select Monitor.>Improper buckle switch op-
eration may cause airbag system malfunction.
•Inner seat belt assembly harness (1) must be
routed securely as shown in the figure, as it can
affect the performance of the seat position sen-
sor and occupant detection system.
•Driver’s seat
•Passenger’s seat
Tightening torque:
NENT, General Description.>
C: INSPECTION
1. OUTER SEAT BELT ASSEMBLY
Check for the following, and replace with new parts
if necessary.
•Pretensioner is cracked or deformed.
•The belt tension sensor is cracked. Or deformed.
•Seat belt is slackened, bent or worn. Seat belt is
abnormally wound or extended.
2. INNER SEAT BELT ASSEMBLY
Check for the following, and replace with new parts
if necessary.
•Inner seat belt assembly is deformed or dam-
aged.
•Seat belt buckle cannot be engaged properly.
SB-00317
(1)
SB-00318
(1)