LEXUS GS400 2000 Service Repair Manual

RS07E±01
H02589
H02590
H02591
RS±28
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2259 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is in ON or ACC position, DTCs
will be recorded.

Never use airbag parts from another vehicle. When
replacing parts, replace with new parts.
1. DISCONNECT AIRBAG CONNECTOR
(a) Using a screwdriver, remove the glove compartment door
finish plate.
HINT:
Tape the screwdriver tip before use.
(b) Remove the airbag connector from the plate.
(c) Disconnect the airbag connector.
2. REMOVE INSTRUMENT PANEL
(See page BO±91)
3. REMOVE FRONT PASSENGER AIRBAG ASSEMBLY
(a) Remove the 2 bolts and 2 straps.
(b) Remove the 2 nuts and front passenger airbag assembly.
CAUTION:

Do not store the front passenger airbag assembly
with the airbag deployment side facing down.

Never disassemble the front passenger airbag as-
sembly.

RS07F±01
H02572
H02592
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
RS±29
2260 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. VEHICLE NOT INVOLVED IN COLLISION
(a) Do a diagnostic system check.
(See page DI±552)
(b) Do a visual check which includes the following items with
the front passenger airbag assembly installed in the ve-
hicle.
Check cuts, minute cracks or marked discoloration on the
front passenger airbag assembly and instrument panel.
2. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
NOT DEPLOYED
(a) Do a diagnostic system check.
(See page DI±552)
(b) Do a visual check which includes the following items with
the front passenger airbag assembly removed from the
vehicle.

Check cuts minute cracks or marked discoloration
on the front passenger airbag assembly.

Check cuts and cracks in wire harness, and for chip-
ping in connectors.
CAUTION:
For removal and installation of the front passenger airbag
assembly, see page RS±28 and RS±38, and be sure to fol-
low the correct procedure.

H02593
RS±30
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2261 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
DEPLOYED
(a) Do a diagnostic system check.
(See page DI±552)
(b) Do a visual check which includes the following items with
the front passenger airbag assembly removed from the
vehicle.

Check the deformation or cracks on the instrument
panel and instrument panel reinforcement.

Check the damage on the connector and wire har-
ness.
HINT:
If the instrument panel or instrument panel reinforcement is de-
formed or cracked, never repair it. Always replace it with a new
one.

RS07G±01
AB0152
SST
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
RS±31
2262 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISPOSAL
HINT:
When scrapping vehicles equipped with an SRS or disposing
of a front passenger airbag assembly, always first deploy the
airbag in accordance with the procedure described below. If any
abnormality occurs with the airbag deployment, contact the
SERVICE DEPT. of the TOYOTA MOTOR SALES, U.S.A.,
INC.. When disposing of a front passenger airbag assembly
with an airbag deployed in a collision, follow the same proce-
dure given in step 1±(g) in ºDISPOSALº.
CAUTION:

Never dispose of front passenger airbag assembly
which has an undeployed airbag.

The airbag produces a sizeable exploding sound
when it deploys, so perform the operation out of
doors and where it will not create a nuisance to
nearby residents.

When deploying the airbag, always use the specified
SST (SRS Airbag Deployment Tool). Perform the op-
eration in place away from electrical noise.
SST 09082±00700, 09082±00760

When deploying an airbag, perform the operation at
least 10 m (33 ft) away from the front passenger air-
bag assembly.

The front passenger airbag is very hot when the air-
bag is deployed, so leave it alone for at least 30 min-
utes after deployment.

Use gloves and safety glasses when handling the
front passenger airbag assembly with the deployed
airbag.

Always wash your hands with water after completing
the operation.

Do not apply water etc. to the front passenger airbag
assembly with the deployed airbag.

AB0158
Battery
SST
H02589
H02594
R13455
10 m (33 ft) or more
R09686
RS±32
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2263 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
1. AIRBAG DEPLOYMENT WHEN SCRAPPING VE-
HICLE
HINT:
Have a battery ready as the power source to deploy the airbag.
(a) Check functioning of SST.
(See page RS±17)
SST 09082±00700, 09082±00760
(b) Disconnect the airbag connector.
(1) Using a screwdriver, remove the glove compart-
ment door finish plate.
HINT:
Tape the screwdriver tip before use.
(2) Remove the airbag connector from the plate.
(3) Disconnect the airbag connector.
(c) Install the SST.
(1) Connect the 2 SST each other, then connect them
to the airbag connector of the spiral cable.
SST 09082±00700, 09082±00760
NOTICE:
To avoid damage to the SST connector and wire harness,
do not lock the secondary lock of the twin lock.
(2) Move the SST at least 10 m (33 ft) away from the
front of the vehicle.
(3) Close all the doors and windows of the vehicle.
NOTICE:
Take care not to damage the SST wire harness.
(4) Connect the SST red clip to the battery positive (+)
terminal and the black clip to the battery negative
(±) terminal.
(d) Deploy the airbag.
(1) Check that no one is inside the vehicle or within 10
m (33 ft) area around the vehicle.
(2) 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.

H02592
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
RS±33
2264 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(e) Dispose of front passenger airbag assembly.
CAUTION:

The front passenger 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 front
passenger airbag assembly with the deployed airbag.

Do not apply water etc., to a front passenger airbag
assembly with the deployed airbag.

Always wash your hands with water after completing
the operation.
When scrapping a vehicle, deploy the airbag and scrap
the vehicle with the front passenger airbag assembly still
installed.
2. DEPLOYMENT WHEN DISPOSING OF FRONT PAS-
SENGER AIRBAG ASSEMBLY
NOTICE:

When disposing of the front passenger airbag assem-
bly only, never use the customer's vehicle to deploy
the airbag.

Be sure to follow the procedure given below when de-
ploying the airbag.
HINT:
Have a battery ready as the power source to deploy the airbag.
(a) Remove the front passenger airbag assembly.
(See page RS±28)
CAUTION:
Store the front passenger airbag assembly with the airbag
deployment side facing up.

AB0163
Wire Harness
Diameter
Stripped Wire Harness Section
H02596
AB0158
SSTBattery RS±34
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2265 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Fix the front passenger airbag assembly.
(1) Use a service±purpose wire harness tie down the
front passenger airbag assembly.
Wire harness: Stripped wire harness section
1.25 mm
2
or more (0.0019 in2 or more)
HINT:
To calculate the square of the stripped wire harness section:
Square = 3.14 x (Diameter)
2
divided by 4
CAUTION:
If a wire harness which is too thin or some other thing is
used to tie down the front passenger airbag assembly it
may be snapped by the shock when the airbag is deployed.
This is highly dangerous. Always use a wire harness for ve-
hicle use which is at least 1.25 mm
2 (0.0019 in2).
(2) Wind the wire harness around the mount brackets.
(3) Position the front passenger airbag assembly in-
side the tire with the airbag deployment side 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 front
passenger airbag assembly coming free due to the
shock from the airbag deploying.

Always tie down the front passenger airbag assembly
with the airbag deployment side facing inside.
NOTICE:
The tire will be marked by the airbag deployment, so use
the spare tire.
(c) Check functioning of SST.
(See page RS±17)
SST 09082±00700, 09082±00760
(d) Install the SST.
Connect the SST connector to the front passenger airbag
assembly connector.
SST 09082±00700, 09082±00760
NOTICE:
To avoid damage to the SST connector and wire harness,
do not lock the secondary lock of the twin lock.

R09689
Tires
(5 or More)
R05403
H02597
SST
Battery
10 m (33 ft) or more
Front Passenger
Airbag Assembly
R09687
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
RS±35
2266 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(e) Place the tires
(1) Place at least 2 tires under the tire to which the front
passenger airbag assembly is tied.
(2) Place at least 2 tires over the tire to which the front
passenger airbag assembly is tied. The top tier
should have the wheel installed.
(3) Tie the tires together with 2 wire harness.
CAUTION:
Make sure that the wire harness is 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) Deploy the airbag.
(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 front passenger 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.
(g) Dispose of front passenger airbag assembly.
CAUTION:

The front passenger 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 front
passenger airbag assembly with the deployed airbag.

Always wash your hands with water after completing
the operation.

RS±36
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2267 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

Do not apply water, etc. to a front passenger airbag
assembly with the deployed airbag.
(1) Remove the front passenger airbag assembly from
the tire.
(2) Place the front passenger airbag assembly in a vi-
nyl bag, tie the end tightly and dispose of it in the
same way as other general parts disposal.

RS07H±01
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
RS±37
2268 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the front passenger airbag assembly, instrument panel or instrument panel
reinforcement.

If the airbag has been deployed.

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

If the front passenger airbag assembly, instrument panel or instrument panel reinforcement has
been found to be faulty during the check in items.(See page RS±29)

If the front passenger airbag assembly has been dropped.
CAUTION:
For replacement of the front passenger airbag assembly, see page RS±28 and RS±38.
Be sure to follow the correct procedure.