2000 LEXUS GS400 Service Repair Manual

SS0FE±01
± SERVICE SPECIFICATIONSSUSPENSION AND AXLE
SS±53
209 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TORQUE SPECIFICATION
Part tightenN´mkgf´cmft´lbf
FRONT
Hub nut1031,05076
Brake caliper x Steering knuckle11 81,20087
ABS speed sensor x Steering knuckle7.88069 in.´lbf
Steering knuckle x Upper suspension arm8789064
Lower ball joint x Steering knuckle11 31,15083
Brake dust cover x Steering knuckle8.38574 in.´lbf
ABS speed sensor wire harness x Shock absorber5.05548 in.´lbf
Stabilizer bar x Stabilizer bar link5556041
Shock absorber bracket x Shock absorber1571,60011 6
Piston rod x Suspension support No.22728020
Suspension support No.1 x Body5657041
Upper suspension arm x Body5354039
Stabilizer bar link x No.2 lower suspension arm11 31,15083
Height control link x Shock absorber bracket5.45548 in.´lbf
No.2 lower suspension arm x No.1 lower suspension arm2452,500180
No.2 lower suspension arm x Lower ball joint1621,65011 9
Strut bar bracket x Body A
B58
152590
1,55043
11 2
No.2 lower suspension arm x Body9597070
Shock absorber bracket x No.2 lower suspension arm2525018
Tie rod end x Lower ball joint8789064
Stabilizer bar bracket x Body2829021
Tie rod end lock nut5657041
Axle hub lock nut1992,030147

SS±54
± SERVICE SPECIFICATIONSSUSPENSION AND AXLE
210 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)Part tighten
N´mkgf´cmft´lbf
REAR
Hub nut1031,05076
Brake caliper x Axle carrier1041,06577
Axle carrier x Upper suspension arm1081,10080
Backing plate x Axle carrier5960043
Drive shaft x Axle hub2892,950213
No.2 lower suspension arm x Axle carrier11 01,12081
No.1 lower suspension arm x Axle carrier7576555
Drive shaft x Differential side gear shaft6869550
Differential drain plug4950039
Differential filler plug4950039
Differential mounting boltFront
Rear123
1421,250
1,45090
105
Ring gear set boltSee page SA±73
Companion flange lock nutSee page SA±73
Differential carrier retainer set bolt2222516
Differential carrier cover set bolt4747534
Breather plug2121015
Suspension support x Body Upper side
Lower side64
18650
18547
13
Piston rod x Suspension support2728020
Upper suspension arm x Body8890065
No.1 lower suspension arm x Body7576555
No.2 lower suspension arm x Stabilizer bar link x Height control sensor link3030522
No.2 lower suspension arm x Shock absorber11 01,12081
No.2 lower suspension arm x Body11 01,12081
ABS speed sensor wire harness x Toe control link5.45548 in.´lbf
Toe control link x Axle carrier5960044
Toe control link x Body5960044
Stabilizer bar x Stabilizer bar link6566048
Stabilizer bar bracket x Body1818513
ABS speed sensor x Axle carrier7.88069 in.´lbf
Parking brake cable x Backing plate7.88069 in.´lbf
Suspension member brace x Body5051037
Differential x Propeller shaft7980558
Oil deflector x Differential carrier cover7.07062 in.´lbf

SS062±07
± SERVICE SPECIFICATIONSBRAKE
SS±55
211 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
BRAKE
SERVICE DATA
Brake pedal height (from asphalt sheet)150.0 ± 160.0 mm (5.906 ± 6.299 in.)
Brake pedal freeplay0.2 ± 2.0 mm (0.008 ± 0.079 in.)
Brake pedal reserve distance at 490 N (50 kgf, 110.2 lbf)More than 93 mm (3.66 in.)
Front brake pad thickness STD11.0 mm (0.433 in.)
Front brake pad thickness Minimum1.0 mm (0.039 in.)
Front brake disc thickness STD32.0 mm (1.260 in.)
Front brake disc thickness Minimum30.0 mm (1.181 in.)
Front brake disc runout Maximum0.05 mm (0.0020 in.)
Rear brake pad thickness STD10.5 mm (0.413 in.)
Rear brake pad thickness Minimum1.0 mm (0.039 in.)
Rear brake disc thickness STD12.0 mm (0.472 in.)
Rear brake disc thickness Minimum10.5 mm (0.413 in.)
Rear brake disc runout Maximum0.05 mm (0.0020 in.)
Rear brake disc inside diameter STD190 mm (7.48 in.)
Rear brake disc inside diameter Maximum191 mm (7.52 in.)
Parking brake shoe lining thickness for rear disc brake STD2.5 mm (0.098 in.)
Parking brake shoe lining thickness for rear disc brake Minimum1.0 mm (0.039 in.)
Parking brake pedal travel at 294 N (30 kgf, 66.1 lbf)7 ± 9 clicks
Parking brake clearance between rear shoe and leverLess than 0.35 mm (0.0138 in.)
Parking brake adjusting shim thickness for rear disc brake
0.3 mm (0.012 in.)
0.6 mm (0.024 in.)
0.9 mm (0.035 in.)

SS063±07
SS±56
± SERVICE SPECIFICATIONSBRAKE
212 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Brake line union nut1515511
Hydraulic brake booster clevis lock nut2526019
Hydraulic brake booster x Pedal bracket131309
Bleeder plug1111 08
Parking brake pedal assembly x Body131309
Front brake caliper installation bolt3435025
Front disc brake caliper x Flexible hose3031022
Front disc brake torque plate x Steering knuckle11 81,20087
Rear disc brake caliper x Flexible hose3031022
Rear disc brake caliper x Rear axle carrier1041,06577
Reservoir set screw1.717.515.2 in.´lbf
Oil pressure sensor x Hydraulic brake booster8183060
Accumulator x Booster pump motor5455036
Front speed sensor installation bolt8.08271 in.´lbf
Front speed sensor harness clamp bolt5.05144 in.´lbf
Rear speed sensor installation bolt8.08271 in.´lbf
Rear speed sensor harness x Body5.55649 in.´lbf
Rear speed sensor harness x Toe control arm5.05144 in.´lbf
Rear seatback x Body1818513

SS0F3±01
± SERVICE SPECIFICATIONSSTEERING
SS±57
213 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
STEERING
SERVICE DATA
POWER STEERING FLUID
Fluid level rise Maximum5 mm (0.20 in.)
Fluid pressure at idle speed with valve closed Minimum8,336 kPa (85 kgf/cm2, 1,209 psi)
STEERING WHEEL
Steering wheel freeplayMaximum30 mm (1.18 in.)
Steering effort at idle speedMaximum7 N´m (70 kgf´cm, 61 in.´lbf)
PS VANE PUMP
2JZ±GE Engine:
Vane pump rotating torqueMaximum0.25 N´m (2.5 kgf´cm, 2.2 in.´lbf)
Oil clearance between pump shaft and bushing STD0.03 ± 0.05 mm (0.0012 ± 0.0020 in.)
Oil clearance between pump shaft and bushingMaximum0.07 mm (0.0028 in.)
Vane plate heightMinimum8.6 mm (0.339 in.)
Vane plate thickness Minimum1.40 mm (0.0551 in.)
Vane plate lengthMinimum14.99 mm (0.5902 in.)
Clearance between the rotor groove and plateMaximum0.033 mm (0.0013 in.)
Vane plate length Pump rotor and cam ring mark
NONE14.999 ± 15.001 mm (0.59051 ± 0.59059 in.)
114.997 ± 14.999 mm (0.59043 ± 0.59051 in.)
214.995 ± 14.997 mm (0.59035 ± 0.59043 in.)
314.993 ± 14.995 mm (0.59027 ± 0.59035 in.)
414.991 ± 14.993 mm (0.59020 ± 0.59027 in.)
Spring free lengthMinimum33.2 mm (1.307 in.)
1UZ±FE Engine:
Vane pump rotating torqueMaximum0.25 N´m (2.5 kgf´cm, 2.2 in.´lbf)
Oil clearance between pump shaft and bushing STD0.03 ± 0.05 mm (0.0012 ± 0.0020 in.)
Oil clearance between pump shaft and bushingMaximum0.07 mm (0.0028 in.)
Vane plate heightMinimum8.0 mm (0.315 in.)
Vane plate thickness Minimum1.77 mm (0.0697 in.)
Vane plate lengthMinimum14.97 mm (0.5894 in.)
Clearance between the rotor groove and plateMaximum0.035 mm (0.0014 in.)
Vane plate length Pump rotor and cam ring mark
NONE14.996 ± 14.998 mm (0.59039 ± 0.59047 in.)
114.994 ± 14.996 mm (0.59032 ± 0.59039 in.)
214.992 ± 14.994 mm (0.59024 ± 0.59032 in.)
314.990 ± 14.992 mm (0.59016 ± 0.59024 in.)
414.988 ± 14.990 mm (0.59008 ± 0.59016 in.)
Spring free lengthMinimum36.0 mm (1.42 in.)
POWER STEERING GEAR
Steering rack runout Maximum0.30 mm (0.0118 in.)
Total preload (Control valve rotating torque)0.5 ± 1.7 N´m (4.7 ± 17.2 kgf´cm, 4.1 ± 14.9 in.´lbf)
PROGRESSIVE POWER STEERING (PPS)
PPS solenoid valve resistance6 ± 11 W

SS0F4±03
SS±58
± SERVICE SPECIFICATIONSSTEERING
214 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
STEERING COLUMN
Steering wheel pad set screw (Torx screw)8.89078 in.´lbf
Steering wheel set nut3536026
Intermediate shaft assembly x Control valve shaft3536026
No.2 intermediate shaft assembly x Intermediate shaft assembly3536026
Column assembly set nut2526019
No.2 intermediate shaft assembly x Main shaft3536026
Column tube support set bolt2020415
Tilt slider assembly set bolt2323017
POWER STEERING VANE PUMP
2JZ±GE Engine:
Union bolt4950036
Pump assembly set bolt5859043
Vane pump pulley set nut4344032
Front housing x Rear housing2424017
Oil reservoir set bolt Front131309
Rear2424017
Solenoid valve x Front housing51 (69)524 (700)38 (51)
1UZ±FE Engine:
Union bolt4950036
Pump assembly set bolt4344032
Pump assembly set nut4344032
Vane pump pulley set nut4344032
Front housing x Rear bracket3940029
Suction port union set bolt131309
Air control valve2930022
Solenoid valve x Front housing51 (69)524 (700)38 (51)
POWER STEERING GEAR
Intermediate shaft assembly x Control valve shaft3536026
Pressure feed and return tube set union bolt4243031
PS gear assembly set bolt6566048
Tube clamp set bolt55548 in.´lbf
Turn pressure tube20 (25)203 (250)15 (18)
Tie rod end Lock nut5556041
Rack end x Steering rack76 (103)770 (1,050)56 (76)
Rack guide spring cap lock nut51 (69)521 (700)38 (51)
Rack guide spring cap2525018
Control valve assembly set bolt1818513
Bearing guide nut2525018
Cylinder end stopper5960043
( ): For use without SST

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

SS0CN±02
SS±60
± SERVICE SPECIFICATIONSBODY ELECTRICAL
216 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
BODY ELECTRICAL
SERVICE DATA
DAYTIME RUNNING LIGHT RELAY (MAIN) (Wire Harness Side)
1 ± Ground (Ignition switch position LOCK or ACC)No voltage
1 ± Ground (Ignition switch position ON or START)Battery positive voltage
5 ± Ground (Engine Stop)No voltage
5 ± Ground (Engine Running)Battery positive voltage
7 ± Ground (Constant)Battery positive voltage
9 ± Ground (Constant)Battery positive voltage
AUTOMATIC LIGHT CONTROL SENSOR
(Connector disconnected)
4 ± Ground (Ignition switch position LOCK or ACC)No voltage
4 ± Ground (Ignition switch position ON)5.2 ± 9.0 V
(Connector connected)
1 ± Ground (Ignition switch position LOCK or ACC)No voltage
1 ± Ground (Ignition switch position ON)9.5 V or more
HEADLIGHT BEAM LEVEL CONTROL ECU
(Connector disconnected)
A1 ± A5 (Ignition switch position OFF)26 ± 30 W
A1 ± A6 (Ignition switch position OFF)26 ± 30 W
A1 ± A7 (Ignition switch position OFF)26 ± 30 W
A1 ± A8 (Ignition switch position OFF)26 ± 30 W
A4 ± B4 (Ignition switch position ON and light control switch HEAD)Below 1.5 V
B1 ± B3 (Ignition switch position OFF)3.5 k ± 6.5 kW
B5 ± B7 (Ignition switch position OFF)3.5 k ± 6.5 kW
(Connector disconnected)
B2 ± B3 (Ignition switch position ON)Approx. 2.5 V
B6 ± B7 (Ignition switch position ON)Approx. 2.5 V
B1 ± B3 (Ignition switch position ON)5V
B5 ± B7 (Ignition switch position ON)5V
TURN SIGNAL FLASHER
1 ± Ground (Ignition switch position LOCK or ACC)No voltage
1 ± Ground (Ignition switch position ON)Battery positive voltage
4 ± Ground (Constant)Battery positive voltage
LIGHT FAILURE RELAY (Wire Harness Side)
5 ± Ground (Light control switch position OFF)No voltage
5 ± Ground (Light control switch position TAIL or HEAD)Battery positive voltage
8 ± Ground (Ignition switch position LOCK or ACC)No voltage
8 ± Ground (Ignition switch position ON)Battery positive voltage
9 ± Ground (Stop light switch position OFF)No voltage
9 ± Ground (Stop light switch position ON)Battery positive voltage
10 ± Ground (Stop light switch position OFF)No voltage
10 ± Ground (Stop light switch position ON)Battery positive voltage
SPEEDOMETER (ON±VEHICLE)
USA: