2000 LEXUS GS400 ABS

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)

RS080±01
H02619
H02620
RS±64
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
2295 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:
(a) Front door scuff plate
(b) Rear door scuff plate
(c) Center pillar lower garnish
2. REMOVE FRONT SEAT OUTER BELT RETRACTOR
(See page BO±124)
(a) w/ Seat Belt Pretensioner:
Disconnect the pretensioner connector.
(b) w/ Seat Belt Warning:
Disconnect the retractor switch connector.
(c) Remove the 2 bolts and retractor.
3. REMOVE SIDE AIRBAG SENSOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Remove the connector with the sensor assembly installed.
(b) Using a torx wrench, remove the 4 screws and side airbag
sensor assembly.
Torx wrench: T40 (Part No.09042±00020 or locally
manufactured tool)

SA0R1±03
± SUSPENSION AND AXLETROUBLESHOOTING
SA±1
2001 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
Wander/pulls
5. Tires (Worn or improperly inflated)
6. Wheel alignment (Incorrect)
7. Steering linkage (Loosen or worn)
8. Hub bearings (Loosen or worn)
9. Steering gear (Out of adjustment or broken)
10.Suspension parts (Worn out)SA±2
SA±4
SA±7
±
SA±9
SA±43
±
±
Bottoming
1. Vehicle (Overloaded)
2. Spring (Weak)
3. Shock absorber (Worn out)±
SA±17
SA±86
SA±21
SA±89
Sways/pitches
1. Tires (Worn or improperly inflated)
2. Stabilizer bar (Bent or broken)
3. Shock absorber (Worn out)SA±2
SA±39
SA±105
SA±21
SA±89
Front wheel shimmy
1. Tires (Worn or improperly inflated)
2. Wheels (Out of balance)
3. Shock absorber (Worn out)
4. Wheel alignment (Incorrect)
5. Ball joints (Worn)
6. Hub bearings (Loosen or worn)
7. Steering linkage (Loosen or worn)
8. Steering gear (Out of adjustment or broken)SA±2
SA±2
SA±21
SA±4
SA±34
SA±9
±
±
Abnormal tire wear
1. Tires (Improperly inflated)
2. Wheel alignment (Incorrect)
3. Suspension parts (Worn out)
4. Shock absorber (Worn out)SA±2
SA±4
SA±7
±
SA±21
SA±89
Noise in rear differential
1. Oil level (Low or wrong grade)
2. Excessive backlash between pinion and ring gear
3. Ring, pinion or side gears (Worn or chipped)
4. Pinion shaft bearing (Worn)
5. Side bearing (Worn)SA±61
SA±63
SA±63
SA±63
SA±63
Oil leak from rear differential
1. Oil level (Too high or wrong grade)
2. Drive pinion oil seal (Worn or damaged)
3. Side gear oil seal (Worn or damaged)
4. Companion flange (Loose or damaged)
5. Side gear shaft (Damaged)SA±61
SA±63
SA±60
SA±67
SA±63

SA0R6±01
F02311
R11097
F02313
SST
SA±10
± SUSPENSION AND AXLEFRONT AXLE HUB
2010 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. REMOVE FRONT BRAKE CALIPER AND DISC
(a) Remove the 2 bolts and brake caliper from the steering
knuckle.
Torque: 118 N´m (1,200 kgf´cm, 87 ft´lbf)
(b) Support the brake caliper securely.
(c) Remove the disc.
3. CHECK BEARING BACKLASH AND AXLE HUB
DEVIATION
(a) Using a dial indicator near the center of the axle hub and
check the backlash in the bearing shaft direction.
Maximum: 0.05 mm (0.0020 in.)
If the blacklash exceeds the maximum, replace the bearing.
(b) Using a dial indicator, check the deviation at the surface
of the axle hub outside the hub bolt.
Maximum: 0.05 mm (0.0020 in.)
If the deviation exceeds the maximum, replace the axle hub.
4. REMOVE ABS SPEED SENSOR
Remove the bolt and ABS speed sensor.
Torque: 7.8 N´m (80 kgf´cm, 69 in.´lbf)
5. REMOVE STEERING KNUCKLE
(a) Remove the upper side of the clip and nut.
Torque: 87 N´m (890 kgf´cm, 64 ft´lbf)
(b) Using SST, remove the steering knuckle from the upper
suspension arm.
SST 09610±20012

SA0SW±01
F03427
ABS Speed Sensor
Wire HarnessToe Control
LinkFender Apron Seal
N´m (kgf´cm, ft´lbf)
: Specified torque
49 (500, 36)
5.4 (55, 48 in.´lbf)
59 (600, 44)
± SUSPENSION AND AXLETOE CONTROL LINK
SA±101
2101 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TOE CONTROL LINK
COMPONENTS

SA0SX±01
F02390
SST
F02391
Matchmarks SA±102
± SUSPENSION AND AXLETOE CONTROL LINK
2102 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE REAR WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. REMOVE REAR FENDER APRON SEAL
3. DISCONNECT ABS SPEED SENSOR WIRE HARNESS
FROM TOE CONTROL LINK
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
4. REMOVE TOE CONTROL LINK
(a) Remove the nut.
Torque: 59 N´m (600 kgf´cm, 44 ft´lbf)
HINT:
At the time of installation, after stabilizing the suspension,
torque the nut.
(b) Using SST, disconnect the toe control link from the axle
carrier.
SST 09610±20012
NOTICE:
Be careful not to damage the dust cover.
(c) Place the matchmarks on the adjusting cam and suspen-
sion member.
(d) Remove the nut, adjusting cam No.2, adjusting cam No.1
and the toe control link.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
HINT:
At the time of installation, after stabilizing the suspension,
torque the nut.

SA0R7±05
R05806
R11093
SST
R11078
SST SA±12
± SUSPENSION AND AXLEFRONT AXLE HUB
2012 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISASSEMBLY
1. REMOVE FRONT HUB GREASE CAP
Using a screwdriver, remove the grease cap from the steering
knuckle.
2. REMOVE FRONT AXLE HUB LOCK NUT AND ABS
SPEED SENSOR ROTOR
(a) Clamp the axle hub in a soft jaw vise.
HINT:
Close vise until it holds hub bolt. Do not tighten further.
(b) Using a chisel and hammer, loosen the staked part of the
lock nut.
(c) Using a 36 mm socket wrench, remove the lock nut.
(d) Remove the ABS speed sensor rotor.
NOTICE:
Take care not to scratch the serrations of the sensor rotor.
3. REMOVE AXLE HUB FROM STEERING KNUCKLE
(a) Remove the 4 bolts and shift the brake dust cover toward
the outside.
(b) Using SST, remove the axle hub from the steering
knuckle.
SST 09950±40011 (09951±04020, 09952±04010,
09953±04020, 09954±04010, 09955±04051,
09957±04010, 09958±04011)
4. REMOVE INNER RACE (OUTSIDE) FROM AXLE HUB
Using SST, remove the inner race from the axle hub.
SST 09950±40011 (09951±04020, 09952±04010,
09953±04020, 09954±04010, 09955±04061,
09957±04010, 09958±04011)

SA0R8±01
W00274
SST
SST
R06214
SST
R08018
SST
SST SA±14
± SUSPENSION AND AXLEFRONT AXLE HUB
2014 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REASSEMBLY
1. INSTALL BEARING
(a) Using SST and a press, install a new bearing to steering
knuckle.
SST 09309±36010, 09950±60020 (09951±00720),
09950±70010 (09951±07150)
NOTICE:
If the inner race and balls come loose from the bearing out-
er race, make sure to install them on the same side as be-
fore.
(b) Using snap ring pliers, install a new snap ring.
2. INSTALL OIL SEAL
(a) Install the inner race (outside).
(b) Using SST and a hammer, install a new oil seal until it is
flush with the end surface of the steering knuckle.
SST 09608±32010
(c) Coat MP grease to the oil seal lip.
3. INSTALL AXLE HUB TO STEERING KNUCKLE
(a) Install the brake dust cover to the steering knuckle with
the 4 bolts.
Torque: 8.3 N´m (85 kgf´cm, 74 in.´lbf)
(b) Using SST and a press, install the axle hub to the steering
knuckle.
SST 09316±60011 (09316±00011, 09316±00071),
09608±32010
4. INSTALL ABS SPEED SENSOR ROTOR
NOTICE:
Do not scratch the serrations of the sensor rotor.
5. INSTALL AXLE HUB LOCK NUT
(a) Install a new axle hub lock nut.
Torque: 199 N´m (2,030 kgf´cm, 147 ft´lbf)
(b) Using a chisel and hammer, stake the lock nut.
6. INSTALL FRONT HUB GREASE CAP
Using a screwdriver and hammer, install the grease cap to the
steering knuckle.