2000 LEXUS GS400 brake sensor

BE0HH±07
I01359
Brake Master Cylinder

Brake Fluid Level
Warning Switch
Combination Meter
and Telltale Light
Assembly
Airbag Sensor Assembly Parking Brake Switch
Driver Side
Junction Block

GAUGE Fuse

SRS±B FuseIgnition Switch
ECM
Washer Tank

Washer Level
Warning Switch Engine Room No.1
Junction Block

MPX±B Fuse
Seat Belt Buckle Switch
Rheostat Light Control
ABS, TRAC and VSC ECU
Clock Assembly

Passenger Seat Belt
Waning Light
BE±80
± BODY ELECTRICALCOMBINATION METER
2381 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMBINATION METER
LOCATION
The vehicle shown in this illustration is ºGS400º.
All components of ºGS300º other than the ones used for engine are same as ºGS400º.

Clock (Passenger seat belt warning light)
Tilt and telescopic ECU
Fuel main sender gauge
Fuel sub sender gauge
ABS, TRAC and VSC ECU (Speed signal)
Speed control unit
Headlight dimmer switch
Ground
Window washer level warning switch
Body control No.2 ECU
ECM
ABS, TRAC and VSC ECU (VSC warning light)
ABS, TRAC and VSC ECU (SLIP warning light)
ABS, TRAC and VSC ECU (TRAC OFF warning light)
ABS, TRAC and VSC ECU (ABS warning light)
ABS, TRAC and VSC ECU (Brake warning light)
GAUGE fuse
Turn signal flasher (Left turn side)
Turn signal flasher (Right turn side)
Light control rheostat (+B)
Light control rheostat (Signal)
Light control rheostat (Ground)
PANEL fuse
Airbag sensor assembly
MPX+B fuse
DOME+B fuse
HEAD±RH fuse
Igniter
Headlight beam leveling control ECU
Ground
Telltale light assembly (IG+)
Telltale light assembly (ODO/TRIP switch)
Telltale light assembly (Right turn signal)
Telltale light assembly (RESET switch)
Telltale light assembly (Left turn signal)
GroundWiring connector side No.1
1
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
17
1 1
1
2
3
4
5
6
9
12
13
14
15
16
18
22
1 1
1
3
4
8
9
10 U B A
± BODY ELECTRICALCOMBINATION METER
BE±85
2386 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

F06045
Reservoir Set Screw
Hydraulic Brake Booster
Oil Pressure
Sensor
No. 1 Accumulator
BracketNo. 2
Accumulator
Bracket
No. 1 Pump
Bracket
Actuator No. 1 TubeAccumulator

O±ring
Spring
Silencer Tube Grommet
No. 2 Piston
No. 1 PistonSnap Ring
BootClevis Reservoir
Cap
No. 2 Pump
Bracket Sleeve
Collar
Booster Pump Motor
Cushion Washer Actuator Hose
15 (155, 11)
54 (550, 36)
1.7 (17.5, 15.2 in.´lbf)
81 (830, 60)
Non±reusable part


Cushion Cushion
Collar
Cushion
25 (260, 19)
N´m (kgf´cm, ft´lbf) : Specified torqueSpacer

O±ring
Clamp

Wire Harness
± BRAKEHYDRAULIC BRAKE BOOSTER
BR±49
2157 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

BR0YV±02
F06048
SST
SST
F06961
F01657Pin
± BRAKEHYDRAULIC BRAKE BOOSTER
BR±51
2159 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISASSEMBLY
1. PLACE HYDRAULIC BRAKE BOOSTER IN VISE
Using SST, set the hydraulic brake booster in vise.
SST 09630±00014 (09631±00142),
09950±60010 (09951±00180, 09951±00190)
2. REMOVE RESERVOIR AND GROMMETS
(a) Remove the reservoir cap.
(b) Remove the 3 set screws and pull out the reservoir.
Torque: 1.7 N´m (17.5 kgf´cm, 15.2 in.´lbf)
(c) Remove the 3 grommets.
3. REMOVE CYLINDER BOOT
4. REMOVE OIL PRESSURE SENSOR
Using 30 mm deeper socket wrench and remove the oil pres-
sure sensor, spacer and O±ring.
Torque: 81 N´m (830 kgf´cm, 60 ft´lbf)
5. REMOVE PISTONS
(a) Pressing the piston in with a screwdriver, use a pin or an
equivalent to push the snap ring from the hole in the body
then remove it with another screwdriver.
(b) Remove the No. 1 and No. 2 piston, pulling straight out,
not at an angle.
NOTICE:

If pulled out and installed at an angle, there is a possi-
bility that the cylinder bore could be damaged.

At the time of reassembly, be careful not to damage
the rubber lips on the pistons.
6. DISCONNECT ACTUATOR HOSE
7. REMOVE 3 BOLTS, 2 HANGERS AND CLAMP

BR0K1±07
F02813
Front Speed Sensor
5.0 (51, 44 in.´lbf)
5.0 (51, 44 in.´lbf)
8.0 (82, 71 in.´lbf)
N´m (kgf´cm, ft´lbf) : Specified torque
± BRAKEFRONT SPEED SENSOR
BR±57
2165 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FRONT SPEED SENSOR
COMPONENTS

BR0K2±06
F02814
F02815
BR±58
± BRAKEFRONT SPEED SENSOR
2166 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. DISCONNECT SPEED SENSOR CONNECTOR
3. REMOVE SPEED SENSOR
(a) Remove the resin clip and 2 clamp bolts holding the sen-
sor harness to the body.
Torque: 5.0 N´m (51 kgf´cm, 44 in.´lbf)
(b) Remove the bolt and speed sensor from the steering
knuckle.
Torque: 8.0 N´m (82 kgf´cm, 71 in.´lbf)

BR0K3±04
± BRAKEFRONT SPEED SENSOR
BR±59
2167 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page BR±58).
HINT:
After installation, check speed sensor signal (See page DI±389).

BR0K4±07
F02816
Headrest
Seatback
Seat Cushion
Rear Speed Senser
5.5 (56, 49in.´lbf)
5.0 (51, 44 in.´lbf)
8.0 (82, 71 in.´lbf)
18 (185, 13)
N´m (kgf´cm, ft´lbf) : Specified torque BR±60
± BRAKEREAR SPEED SENSOR
2168 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REAR SPEED SENSOR
COMPONENTS