2000 LEXUS GS400 flat tire

I04084
A
D
CB BE±96
± BODY ELECTRICALCOMBINATION METER
2397 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. INSPECT SPEEDOMETER ON±VEHICLE
Using a speedometer tester, inspect the speedometer for allow-
able indication error and check the operation of the odometer.
HINT:
Tire wear and tire over or under inflation will increase the indica-
tion error.
USA (mph)CANADA (km/h)
Standard indication Allowable range Standard indication Allowable range
20 18 ± 24 20 17 ± 24
40 38 ± 44 40 38 ± 46
60 56 ± 66 60 57.5 ± 67
80 78 ± 88 80 77 ± 88
100 98 ± 110 100 96 ± 109
120 118 ± 132 120 115 ± 130
140 134 ± 151.5
160 153 ± 173
If error is excessive, replace the speedometer.
7. INSPECT SPEEDOMETER RESISTANCE
Measure the resistance between terminals with fixing pointer to
the stopper.
Tester connectionResistance (W)
A ± B140 ± 185
C ± D130 ± 175
If resistance value is not as the specified, replace the meter.
8. INSPECT TACHOMETER/
ON±VEHICLE
(a) Connect a tune±up test tachometer, and start the engine.
NOTICE:

Reversing the connection of the tachometer will dam-
age the transistors and diodes inside.

When removing or installing the tachometer, be care-
ful not to drop or subject it to heavy shocks.
(b) Compare the tester and tachometer indications.
DC 13.5 V 25 °C at (77°F)
Standard indicationAllowable range
700630 ± 770
1,000900 ± 1,100
2,0001,850 ± 2,150
3,0002,800 ± 3,200
4,0003,800 ± 4,200
5,0004,800 ± 5,200
6,0005,750 ± 6,250
7,0006,700 ± 7,300

SS0FD±01
± SERVICE SPECIFICATIONSSUSPENSION AND AXLE
SS±49
205 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
SUSPENSION AND AXLE
SERVICE DATA
Cold tire inflation
pressure
(GS 400)
Tire size
225/55R16 94V *1Front
*1Rear
*2Front
*2Rear
235/45ZR17 *1Front
*1Rear
*2Front
*2Rear
220 kPa (2.2 kgf/cm2
or bar, 32 psi)
220 kPa (2.2 kgf/cm2 or bar, 32 psi)
290 kPa (2.9 kgf/cm2 or bar, 42 psi)
290 kPa (2.9 kgf/cm2 or bar, 42 psi)
230 kPa (2.3 kgf/cm2 or bar, 33 psi)
230 kPa (2.3 kgf/cm2 or bar, 33 psi)
300 kPa (3.0 kgf/cm2 or bar, 44 psi)
300 kPa (3.0 kgf/cm2 or bar, 44 psi)
Cold tire inflation
pressure
(GS 300)
Tire size
P215/60R16 94V *1Front
*1Rear
*2Front
*2Rear
225/55R16 94V *1Front
*1Rear
*2Front
*2Rear
210 kPa (2.1 kgf/cm2 or bar, 30 psi)
210 kPa (2.1 kgf/cm2 or bar, 30 psi)
300 kPa (3.0 kgf/cm2 or bar, 44 psi)
300 kPa (3.0 kgf/cm2 or bar, 44 psi)
220 kPa (2.2 kgf/cm2 or bar, 32 psi)
220 kPa (2.2 kgf/cm2 or bar, 32 psi)
300 kPa (3.0 kgf/cm2 or bar, 44 psi)
300 kPa (3.0 kgf/cm2 or bar, 44 psi)
Vehicle height
P215/60R16 *3Front
*4Rear
225/55R16 *3Front
*4Rear
235/45ZR17 *3Front
*4Rear
243 mm (9.63 in.)
226 mm (8.90 in.)
240 mm (9.45 in.)
221 mm (8.70 in.)
238 mm (9.37 in.)
219 mm (8.62 in.)
Camber
Left±right error±0°16' ± 30' (±0.27° ± 0.5°)
30' (0.5°) or less
Front wheel
alignmentCaster
Left±right error7°33' ± 30' (7.55° ± 0.5°)
30' (0.5°) or less
Steering axis inclination
Left±right error8°52' ± 30' (8.87° ± 0.5°)
30' (0.5°) or less
Toe±in (total)
Rack end length difference0°09' ± 12' (0.15° ± 0.2°, 1.5 ± 2 mm, 0.06 ± 0.08 in.)
1.5 mm (0.059 in.) or less
Wheel angle Inside wheel
Outside wheel: Reference38°51' (36°51' - 39°51')
38.85° (36.85° - 39.85°)
32°05'
32.08°
Rear wheel
Camber
Left±right error±0°47' ± 30' (±0.78° ± 0.5°)
30' (0.5°) or less
Rear wheel
alignment
Toe±in (total)
Link and arm length difference0°08' ± 12' (0.13° ± 0.2°, 1.4 ± 2 mm, 0.056 ± 0.08 in.)
4.0 mm (0.16 in.) or less
FtlWheel bearing backlash0.05 mm (0.0020 in.)Front axleAxle hub deviation0.05 mm (0.0020 in.)
*1: For driving under 160 km/h (100 mph)
*
2: For driving at 160 km/h (100 mph) or over
*
3: Measure from the ground to the center of the lower suspension arm mounting bolt.
*
4: Measure from the ground to the center of the No.2 lower suspension arm mounting bolt.

SR0DF±03
SR±2
± STEERINGTROUBLESHOOTING
2172 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 the order shown. If necessary, repair or replace these parts.
SymptomSuspect AreaSee page
Hard steering
3. Tires (Improperly inflated)
4. Power steering fluid level (Low)
5. Drive belt (Loose)
6. Front wheel alignment (Incorrect)
7. Steering system joints (Worn)
8. Suspension arm ball joints (Worn)
9. Steering column (Binding)
10.Power steering gear
11. PPS systemSA±2
SR±4
±
SA±4
±
SA±27
SA±37
±
SR±42
SR±59
Poor return
1. Tires (Improperly inflated)
2. Front wheel alignment (Incorrect)
3. Steering column (Binding)
4. Power steering gearSA±2
SA±4
±
SR±42
Excessive play
1. Steering system joints (Worn)
2. Suspension arm ball joints (Worn)
3. Intermediate shaft, Universal joint, Sliding yoke (Worn)
4. Front wheel bearing (Worn)
5. Power steering gear
6. PPS system±
SA±27
SA±37
±
SA±10
SR±42
SR±59
Abnormal noise
1. Power steering fluid level (Low)
2. Steering system joints (Worn)
3. Power steering gearSR±4
±
SR±42
HINT:
When the problem occurs on the power tilt and telescopic steering system, refer to the DI section.
(See page DI±517)

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

SA0R2±01
R03031
R13504
SA±2
± SUSPENSION AND AXLETIRE AND WHEEL
2002 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TIRE AND WHEEL
INSPECTION
1. INSPECT TIRE
(a) Check the tires for wear and for the proper inflation pres-
sure.
Cold tire inflation pressure:
(GS 400)
Tire sizeFront
kPa (kgf/cm2
or bar, psi)
Rear
kPa (kgf/cm2
or bar, psi)
225/55R16 94V*1220 (2.2, 32)
*2290 (2.9, 42)
*1220 (2.2, 32)
*2290 (2.9, 42)
235/45ZR17*1230 (2.3, 33)
*2300 (3.0, 44)
*1230 (2.3, 33)
*2300 (3.0, 44)
(GS 300)
Tire sizeFront
kPa (kgf/cm2
or bar, psi)
Rear
kPa (kgf/cm2
or bar, psi)
P215/60R16 94V*1210 (2.1, 30)
*2300 (3.0, 44)
*1210 (2.1, 30)
*2300 (3.0, 44)
225/55R16 94V*1220 (2.2, 32)
*2300 (3.0, 44)
*1220 (2.2, 32)
*2300 (3.0, 44)
*1: For driving under 160 km/h (100 mph)
*
2: For driving at 160 km/h (100 mph) or over
(b) Check the tire runout.
Tire runout: 1.4 mm (0.055 in.) or less
2. ROTATING TIRES
HINT:
See the illustration for where to rotate each tire.

R07928
F04238
16 inch wheel
17 inch wheelApprox. 25 mm (0.984 in.)
Approx. 25 mm (0.984 in.)
R11097
± SUSPENSION AND AXLETIRE AND WHEEL
SA±3
2003 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. INSPECT WHEEL BALANCE
(a) Check and adjust the off±the±car balance.
(b) If necessary, check and adjust the on±the±car balance.
Unbalance after adjustment: 8.0 g (0.018 lb) or less
NOTICE:

Adhere the sticking type balance weight to the flat
position shown in the illustration.

Push the balance weight securely with a finger to ad-
here it to the position.
(Pushing force: 10 kgf/more than 2 secs.)

After cleaning the surface which the balance weight
will be adhered to of dirt, oil and water with a cleaning
detergent, adhere the balance weight to the surface.

Do not touch the sticking surface of the tape.

Do not use the once used balance weight.

Please use the TOYOTA genuine sticking type bal-
ance weight.
4. CHECK WHEEL BEARING LOOSENESS
(a) Check the backlash in the bearing shaft direction.
Maximum: 0.05 mm (0.0020 in.)
(b) Check the axle hub deviation.
Maximum: 0.05 mm (0.0020 in.)
5. CHECK FRONT SUSPENSION FOR LOOSENESS
6. CHECK STEERING LINKAGE FOR LOOSENESS
7. CHECK BALL JOINT FOR LOOSENESS AND
EXCESSIVE PLAY (See page SA±34)
8. CHECK SHOCK ABSORBER WORKS PROPERLY

Check for oil leak

Check mounting bushings for wear

Bounce front and rear of the vehicle