instrument panel LEXUS GS400 2000 Service User Guide

IN±38
± INTRODUCTIONTERMS
38 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) H±FUSE
High Current Fuse
HIHigh
HIDHigh Intensity Discharge (Head Lamp)
HSGHousing
HTHard Top
HWSHeated Windshield System
IACIdle Air Control
ICIntegrated circuit
IDIIndirect Diesel Injection
IFSIndependent Front Suspension
IGIgnition
IIAIntegrated Ignition Assembly
INIntake (Manifold, Valve)
INTIntermittent
I/PInstrument Panel
IRSIndependent Rear Suspension
J/BJunction Block
J/CJunction Connector
KDKick±Down
LANLocal Area Network
LBLiftback
LCDLiquid Crystal Display
LEDLight Emitting Diode
LHLeft±Hand
LHDLeft±Hand Drive
L/H/WLength, Height, Width
LLCLong±Life Coolant
LNGLiquified Natural Gas
LOLow
LPGLiquified Petroleum Gas
LSDLimited Slip Differential
LSP & PVLoad Sensing Proportioning And Bypass Valve
LSPVLoad Sensing Proportioning Valve
MAX.Maximum
MICMicrophone
MILMalfunction Indicator Lamp
MIN.Minimum
MPMultipurpose
MPXMultiplex Communication System
M/TManual Transmission
MTMount
MTGMounting
NNeutral
NANatural Aspiration
No.Number
O/DOverdrive

SS0FC±03
± SERVICE SPECIFICATIONSSUPPLEMENTAL RESTRAINT SYSTEM
SS±59
215 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
SUPPLEMENTAL RESTRAINT SYSTEM
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Steering wheel3536026
Steering wheel pad7.17263 in.´lbf
Front passenger airbag assembly x Instrument panel5.65749 in.´lbf
Front passenger airbag assembly x Instrument panel reinforcement2020515
Seatback assembly x Seat adjuster6162245
Seat cushion assembly x Seat adjuster1919414
Front seat x body3737527
Front seat outer belt x Front seat4243031
Airbag sensor assembly2020014
Front airbag sensor2020014
Side airbag sensor assembly2020014

± SERVICE SPECIFICATIONSBODY
SS±65
221 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) INSTRUMENT PANEL
±±±
Steering wheel nut3536026
Front passenger airbag assembly x reinforcement5.65750 in.´lbf
FRONT SEAT±±±
Side airbag assembly x Seatback frame5.45548 in.´lbf
Seat x Body3737527
Seatback x Seat adjuster6162245
Seat cushion x Seat adjuster1919414
REAR SEAT±±±
Seatback x Body1818513
SEAT BELT±±±
Front Seat Belt:±±±
Adjustable anchor x Body4243031
Shoulder anchor x Adjustable anchor4243031
Outer belt x Front seat4243031
Retractor x Body Upper Bolt:7.57666 in.´lbf
Lower Bolt:4243031
Inner belt x Seat4243031
Rear Seat Belt:±±±
Floor anchor x Body4243031
Inner belt x Body4243031
Retractor x Body4243031
Tether anchor x Body2020414

AB0089
Secondary Lock
Primary LockLockLock
Primary Lock Incomplete
(Secondary Lock Prevented)Primary Lock Complete
(Secondary Lock Permitted)Twin±Lock Completed
Z14034
Fig.1
Fig.2Power Source
Safing
Sensor
Squibs
Airbag Sensor
± SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS±7
2238 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(4) Connector Twin±Lock Mechanism
With this mechanism connectors (male and female
connectors) are locked by 2 locking devices to in-
crease the connection reliability. If the primary lock
is incomplete, ribs interfere and prevent the sec-
ondary lock.
(b) When the vehicle is involved in a frontal collision in the
hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the airbag sensor go
on simultaneously. When a deceleration force acts on the
sensors, 2 squibs in the driver airbag and front passenger
airbag ignite and generate gas. The gas discharging into
the driver airbag and front passenger airbag rapidly in-
creases the pressure inside the bags, breaking open the
steering wheel pad and instrument panel door.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag's rear or
side.

RS07D±01
H02588
Instrument Panel
Front Passenger
Airbag Assembly
5.6 (57, 49 in.´lbf)
: Specified torqueN´m (kgf´cm, ft´lbf)
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
RS±27
2258 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FRONT PASSENGER AIRBAG ASSEMBLY
COMPONENTS

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.

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.

RS07I±01
H02591
H02590
H04226
RS±38
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2269 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
NOTICE:
Never use airbag parts from another vehicle. When replac-
ing parts, replace with new parts.
1. INSTALL FRONT PASSENGER AIRBAG ASSEMBLY
(a) Install the front passenger airbag assembly with 2 nuts.
Torque: 5.6 N´m ( 57 kgf´cm, 49 in.´lbf)
NOTICE:

Pass the straps of the front passenger airbag door
through the brackets on the right and left sides se-
curely.

Install the straps so that they are not pinched be-
tween the airbag and instrument panel.
(b) Install the 2 straps and 2 bolts.
NOTICE:

When installing the front passenger airbag assembly,
make sure that the straps are not distorted and
installed to the brackets securely.

Make sure that the front passenger airbag assembly
is installed to the specified torque.

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

When installing the front passenger airbag assembly,
take care that the wiring does not interfere with other
parts and is not pinched between other parts.
2. INSTALL INSTRUMENT PANEL
(See page BO±97)
Install the 2 bolts to the instrument panel reinforcement.
Torque: 20 N´m (205 kgf´cm, 15 ft´lbf)
3. CONNECT AIRBAG CONNECTOR
(a) Connect the airbag connector.
(b) Install the airbag connector to glove compartment door
finish plate.
(c) Install the glove compartment door finish plate.