LEXUS GS400 2000 Service Repair Manual

H00544
H00544
RS±48
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY
2279 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(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 SYSTEMSIDE AIRBAG ASSEMBLY
RS±49
2280 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the seatback assembly or seatback cover.
CaseReplacing 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.

RS0JE±01
H02863
H02864
RS±50
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY
2281 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
NOTICE:
Never use airbag parts from another vehicle. When replac-
ing parts, replace them with new parts.
1. INSTALL SEATBACK ASSEMBLY
(a) Install the wire harness to the seat cushion inside covers
as shown in the illustration.
NOTICE:
Be careful not to damage the wire harness.
(b) Install the seat cushion inside cover with the 2 screws.
HINT:
Do the same for LH and RH.
(c) Install the seatback assembly with the 4 bolts.
Torque: 61 N´m (622 kgf´cm, 45 ft´lbf)
(d) Install new hog rings.
HINT:
When installing hog rings, take care to prevent wrinkles as least
as possible.
(e) Install the seatback board with the 2 screws to the seat-
back assembly.
2. INSTALL SEAT CUSHION ASSEMBLY
(a) Install the seat cushion assembly with the 4 bolts to the
seat adjuster.
(b) Install the wire harness to the seat cushion, as shown in
the illustration.
Torque: 19 N´m (194 kgf´cm, 14 ft´lbf)
3. INSTALL FRONT SEAT INNER CUSHION COVER
4. INSTALL FRONT SEAT CUSHION SHIELD
5. INSTALL NO.1 FRONT SEAT CUSHION SHIELD
6. INSTALL POWER SEAT SWITCH KNOBS
7. INSTALL HEADREST
8. INSTALL FRONT SEAT
(a) Mount the front seat to the vehicle.
(b) Connect the connectors.
(c) Slide the front seat to the rearmost position.
(d) Tighten the bolts on the rear side temporarily,from the bolt
on the outer side tighten them completely.
Torque: 37 N´m (375 kgf´cm, 27 ft´lbf)
(e) Slide the front seat to the most front position.
(f) Tighten the bolts on the rear side temporarily, from the bolt
on the outer side tighten them completely.
Torque: 37 N´m (375 kgf´cm, 27 ft´lbf)
(g) Install the 4 seat track covers.

N20339
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY
RS±51
2282 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
9. INSTALL FRONT SEAT OUTER BELT FLOOR AN-
CHOR
(a) Install the front seat outer belt floor anchor.
Torque: 42 N´m (430 kgf´cm, 31 ft´lbf)
(b) Install the seat belt anchor cover cap.

RS07P±01
H02615
End Pad
Finish Panel
No.1 Safety Pad
Hood Lock
Release Lever
No.1 Under CoverFront Ash Receptacle
Cluster Finish PanelGlove Compartment
Finish Plate
Glove Compartment
Panel Assembly
No.2 Under Cover
Accessary Socket Case
Accessary Socket
Console Box Carpet
Rear Console
Armrest
Console Box Register No.3 Console Box
Mounting Bracket
Console Box
No.1 Console Box Duct
Airbag Sensor Assembly
: Specified torqueN´m (kgf´cm, ft´lbf)
20 (200, 14)
RS±52
± SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
2283 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
AIRBAG SENSOR ASSEMBLY
COMPONENTS

RS07Q±01
H02616
± SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
RS±53
2284 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and various
computers unless absolutely necessary.
(If the IC terminals are touched, the IC may be destroyed by
static electricity.)
1. REMOVE THESE PARTS:
(See page BO±91)
(a) Finish plate
(b) End Pad
(c) No.1 under cover
(d) Hood lock release lever
(e) No.1 safety pad
(f) No.2 under cover
(g) Glove compartment finish plate
(h) Glove compartment panel assembly
(i) Front ash receptacle
(j) Cluster finish panel
(k) Console box carpet
(l) Accessary socket
(m) Accessary case
(n) Lower rear console box
(o) Rear console armrest
(p) Console box register
(q) Console box
(r) No.3 console box mounting bracket
(s) No.1 console box duct
2. REMOVE AIRBAG SENSOR ASSEMBLY
(a) Disconnect the airbag sensor connectors.
NOTICE:
Remove the connectors with the sensor assembly
installed.
(b) Using a torx wrench, remove the 3 screws and airbag sen-
sor assembly.
Torx wrench: T40 (Part No.09042±00020 or locally
manufactured tool)

RS07R±01
H02574
RS±54
± SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
2285 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. VEHICLE NOT INVOLVED IN COLLISION
Do a diagnostic system check.
(See page DI±552)
2. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
NOT DEPLOYED
Do a diagnostic system check.
(See page DI±552)
3. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
DEPLOYED
Replace the airbag sensor assembly.

RS07S±01
± SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
RS±55
2286 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the airbag sensor assembly.

If the SRS has been deployed in a collision.

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

If the airbag sensor assembly has been dropped.
CAUTION:
For removal and installation of the airbag sensor assembly, see page RS±53 and RS±56. Be sure to
follow the correct procedure.

RS07T±01
H02616
RS±56
± SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
2287 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
NOTICE:

Never use SRS parts from another vehicle. When re-
placing parts, replace them with new parts.

Never reuse the airbag sensor assembly involved in
a collision when the airbag has deployed.

Never repair a sensor in order to reuse it.
1. INSTALL AIRBAG SENSOR ASSEMBLY
(a) Using a torx wrench, install the airbag sensor assembly
with 3 screws.
Torx wrench: T40 (Part No.09042±00020 or locally
manufactured tool)
Torque: 20 N´m (200 kgf´cm, 14 ft´lbf)
(b) Connect the airbag sensor connectors.
NOTICE:

Installation of the connector is done with the sensor
assembly installed. Make sure the sensor assembly
is installed to the specified torque.

If the sensor assembly has been dropped, or there are
cracks, dents or other defects in the case, bracket or
connector, replace the sensor assembly with a new
one.

When installing the senor assembly, take care that
the SRS wiring does not interfere with other parts and
is not pinched between other parts.

After installing , shake the sensor assembly to check
that there is no looseness.
2. INSTALL THESE PARTS: (See page BO±97)
(a) No.1 console box duct
(b) No.3 console box mounting bracket
(c) Console box
(d) Console box register
(e) Rear console armrest
(f) Lower rear console box
(g) Accessary case
(h) Accessary socket
(i) Console box carpet
(j) Cluster finish panel
(k) Front ash receptacle
(l) Glove compartment panel assembly
(m) Glove compartment finish plate
(n) No.2 under cover
(o) No.1 safety pad
(p) Hood lock release lever
(q) No.1 under cover
(r) End Pad
(s) Finish plate

RS07U±01
H02618
2JZ±GE Engine:
Air Cleaner Assembly
1UZ±FE Engine:
Air Cleaner AssemblyAir Cleaner Inlet No.1
ECU Box Upper Cover
ECU Box Front Airbag
Sensor RH
Front Airbag Sensor LH
7.8 (80, 69 in.´lbf)
7.8 (80, 69 in.´lbf)
: Specified torqueN´m (kgf´cm, ft´lbf)

Non±reusable part



± SUPPLEMENTAL RESTRAINT SYSTEMFRONT AIRBAG SENSOR
RS±57
2288 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FRONT AIRBAG SENSOR
COMPONENTS