Lexus GS300/400 (2000 year). Service manual - part 248

AB0163

Wire Harness
Diameter

Stripped Wire Harness Section

H00549

H00548

H02607

RS–46

–

SUPPLEMENTAL RESTRAINT SYSTEM

SIDE AIRBAG ASSEMBLY

2277

(c)

Using a service–purpose wire harness, tie down the side
airbag assembly to the tire.
Wire harness: Stripped wire harness section
1.25 mm

2 

or more (0.0019 in

2

. or more)

CAUTION:
If a wire harness which is too thin or some other thing is
used to tie down the side airbag assembly, it may be
snapped by the shock when the airbag is deployed. This is
highly dangerous. Always use a wire harness for vehicle
use which is at least 1.25 mm

2

 (0.0019 in

2

.).

HINT:
To calculate the square of the stripped wire harness section–

Square = 3.14 x (Diameter)

2

 divided by 4

(1)

Install the 2 nuts to the side airbag assembly.

(2)

Wind the wire harness around the stud bolts of the
side airbag assembly as shown in the illustration.

(3)

Position the side airbag assembly inside the tire
with the airbag deployment direction facing inside.

Tire size: Must exceed the following dimensions–
Width: 185 mm (7.28 in.)
Inner diameter: 360 mm (14.17 in.)

CAUTION:

Make sure the wire harness is tight. It is very danger-
ous when a loose wire harness results in the side air-
bag assembly coming free due to the shock from the
airbag deploying.

AB0158

SST

Battery

H02608

Tires
(5 or More)

R05403

H02609

10 m (33 ft) or more

SST

Battery

Side Airbag Assembly

–

SUPPLEMENTAL RESTRAINT SYSTEM

SIDE AIRBAG ASSEMBLY

RS–47

2278

Always tie down the side airbag assembly with the
airbag deployment side facing inside.

NOTICE:
The tire will be marked by the airbag deployment, so when
disposing of the airbag use a redundant tire.

(d)

Check functioning of the SST 
(See step 1–(a) on page 

RS–17

).

SST

09082–00700

(e)

Place the tires.
(1)

Place at least 2 tires under the tire to which the side
airbag assembly is tied.

(2)

Place at least 2 tires over the tire to which the side
airbag assembly is tied. The top tire should have the
wheel installed.

(3)

Tie the tires together with 2 wire harness.

CAUTION:
Make sure that the wire harness are tight. It is very danger-
ous when loose wire harness results in the tires coming
free due to the shock from the airbag deploying.
HINT:
Place the SST connector and wire harness inside tires. Secure
at least 1 m (3 ft) of slack for the wire harness.

(f)

Install the SST.
Connect the connectors of the 2 SST to the side airbag
assembly connector.
SST

09082–00700, 09082–00750

NOTICE:
To avoid damaging the SST connector and wire harness,
do not lock the secondary lock of the twin lock. Also, se-
cure some slack for the SST wire harness inside the tire.
(g)

Deploy the airbag.

H00544

H00544

RS–48

–

SUPPLEMENTAL RESTRAINT SYSTEM

SIDE AIRBAG ASSEMBLY

2279

(1)

Connect the SST red clip to the battery positive (+)
terminal and the black clip to the battery negative
(–) terminal.

(2)

Check that no one is within 10 m (33 ft) area around
the tire which the side airbag assembly is tied to.

(3)

Press the SST activation switch and deploy the air-
bag.

HINT:
The airbag deploys simultaneously as the LED of the SST ac-
tivation switch lights up.
(h)

Dispose of the side airbag assembly.

CAUTION:

The side airbag assembly is very hot when the airbag
is deployed, so leave it alone for at least 30 minutes
after deployment.

Use gloves and safety glasses when handling a side
airbag assembly with the deployed airbag.

Do not apply water etc. to a side airbag assembly with
the deployed airbag.

Always wash your hands with water after completing
the operation.
(1)

Remove the side airbag assembly from the tire.

(2)

Place the side airbag assembly in a vinyl bag, tie the
end tightly and dispose of it in the same way as oth-
er general parts disposal.

3.

DEPLOYMENT WHEN DISPOSING OF SIDE AIRBAG
ASSEMBLY WITH AIRBAG DEPLOYED IN COLLISION

Dispose of the side airbag assembly.
CAUTION:

The side airbag assembly is very hot when the airbag
is deployed, so leave it alone for at least 30 minutes
after deployment.

Use gloves and safety glasses when handling a side
airbag assembly with the deployed airbag.

Do not apply water etc. to a side airbag assembly with
the deployed airbag.

Always wash your hands with water after completing
the operation.
(1)

Remove the side airbag assembly from the seat
(See page 

RS–40

 and see step 2).

(2)

Place the side airbag assembly in a vinyl bag, tie the
end tightly and dispose of it in the same way as oth-
er general parts disposal.

RS07N–02

–

SUPPLEMENTAL RESTRAINT SYSTEM

SIDE AIRBAG ASSEMBLY

RS–49

2280

REPLACEMENT

REPLACEMENT REQUIREMENTS
In the following cases, replace the seatback assembly or seatback cover.

Case

Replacing part

If the side airbag has been deployed.

Seatback assembly

If the side airbag assembly has been found to be faulty in troubleshooting.

Seatback assembly

If the side airbag assembly has cuts during checking items 

(See page 

RS–42

).

Seatback assembly

If the seatback cover has cuts and frayed seams during checking items 

(See page 

RS–42

).

Seatback cover

If the side airbag assembly has been found to be faulty during checking items

(See page 

RS–42

).

Seatback assembly

If the seatback cover has been found to be faulty during checking items 

(See page 

RS–42

).

Seatback cover

If the seatback assembly has been dropped.

Seatback assembly

CAUTION:
For removal and installation of the seatback assembly, see page 

RS–40

 and 

RS–50

. Be sure to follow

the correct procedure.