brake sensor LEXUS LS430 2003 Factory Manual PDF

The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF" and switching oil pressure to
the valves in the valve body.
The ECM calculates the "actual" transmission gear by comparing the signals from the input speed sensor (NT)
and the output speed sensor (SP2). The ECM can detect many mechanical problems in the shift solenoids, valve
body, and the transmission clutches, brakes, and gears. If the ECM detects that the actual gear position and the
commanded gear position are different, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
MONITOR STRATEGY TABLE
TYPICAL ENABLING CONDITIONS
The following items are common to all conditions below.
TYPICAL ENABLING CONDITIONS TABLE
Related DTCsP0781: Valve body/Rationality check
Required sensors/ComponentsValve body, Automatic transmission assembly
Frequency of operationContinuous
Duration<0026005200510047004c0057004c005200510003000b0024000c00030044005100470003000b0025000c00030013001100170003005600480046001100030026005200510047004c0057004c005200510003000b0026000c00030016000300560048004600
110003[
Condition (C) 1 sec.
MIL operation2 driving cycles
Sequence of operationNone
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Turbine speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve S1 circuitNot circuit malfunction
Shift solenoid valve S2 circuitNot circuit malfunction
Shift solenoid valve S3 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Shift solenoid valve SR circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
ECT (Engine coolant temperature) sensor circuitNot circuit malfunction
KCS sensor circuitNot circuit malfunction
ETCS (Electric throttle control system)Not system down
Transmission range"D"
ECT40°C (104°F) or more
Spark advance from Max. retard timing by KCS
control0° CA or more
EngineStarting

a. Check the steering wheel at the straight-ahead position.
b. Remove the 2 bolts and sliding yoke from the steering intermediate shaft.
Fig. 34: Removing Bolts And Sliding Yoke

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
33.REMOVE FRONT DISC BRAKE CYLINDER ASSY RH (See OVERHAUL
)
34.REMOVE DISC BRAKE CYLINDER ASSY LH (See OVERHAUL
)
35.REMOVE FRONT SUSPENSION UPPER ARM ASSY RH (See REPLACEMENT
)
36.REMOVE FRONT SUSPENSION UPPER ARM ASSY LH (See REPLACEMENT
)
37.REMOVE PNEUMATIC FRONT RH W/ SHOCK ABSORBER CYLINDER ASSY (See
REPLACEMENT
)
38.REMOVE PNEUMATIC FRONT LH W/ SHOCK ABSORBER CYLINDER ASSY (See
REPLACEMENT
)
39.REMOVE HEIGHT CONTROL SENSOR LINK SUB-ASSY FRONT (See REPLACEMENT
)
40.REMOVE STABILIZER BRACKET FRONT (See REPLACEMENT
)
41.DISCONNECT POWER STEERING GEAR HOUSING ASSY
a. Remove the bolt, and disconnect the 2 PS oil tubes from the front frame.
b. Remove the 4 bolts, and disconnect the PS gear housing from the front frame.

Fig. 77: Installing Power Steering Gear Housing Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
114.INSTALL HEIGHT CONTROL SENSOR LINK SUB-ASSY FRONT (See REPLACEMENT
)
115.INSTALL PNEUMATIC FRONT RH W/SHOCK ABSORBER CYLINDER ASSY (See
REPLACEMENT
)
116.INSTALL PNEUMATIC FRONT LH W/SHOCK ABSORBER CYLINDER ASSY (See
REPLACEMENT
)
117.INSTALL FRONT SUSPENSION UPPER ARM ASSY RH (See REPLACEMENT
)
118.INSTALL FRONT SUSPENSION UPPER ARM ASSY LH (See REPLACEMENT
)
119.INSTALL FRONT DISC BRAKE CYLINDER ASSY RH (See OVERHAUL
)
120.INSTALL DISC BRAKE CYLINDER ASSY LH (See OVERHAUL
)
121.INSTALL STEERING SLIDING W/ SHAFT YOKE SUB-ASSY
a. Tighten the 2 bolts for sliding yoke.
Torque: 35 N.m (357 kgf.cm, 26 ft.lbf)

3.SEPARATE SKID CONTROL SENSOR WIRE (See REPLACEMENT )
4.REMOVE DISC BRAKE CYLINDER ASSY LH (See step 8 in OVERHAUL
)
5.REMOVE FRONT DISC (See step 14 in OVERHAUL
)
6.REMOVE FRONT AXLE HUB SUB-ASSY LH (See step 5 in REPLACEMENT
)
7.REMOVE STEERING KNUCKLE LH
a. Remove the clip and castle nut.
b. Using SST, separate the upper ball joint from the steering knuckle LH.
SST 09628-62011
Fig. 68: Removing Steering Knuckle LH

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
8.SEPARATE TIE ROD ASSY LH
a. Remove the clip and castle nut.
b. Using SST, separate the tie rod end.
SST 09628-62011

b. Install a new cotter pin on the steering knuckle.
14.INSTALL FRONT AXLE HUB SUB-ASSY LH (See step 8 in REPLACEMENT
)
15.INSTALL FRONT DISC (See step 15 in OVERHAUL
)
16.INSTALL DISC BRAKE CYLINDER ASSY LH (See step 21 in OVERHAUL
)
17.INSTALL SKID CONTROL SENSOR WIRE (See step 11 in REPLACEMENT
)
18.INSTALL FRONT STABILIZER LINK ASSY LH (See REPLACEMENT
)
19.INSTALL FRONT WHEELS
Torque: 103 N.m (1,050 kgf.cm, 76 ft.lbf)
20.CHECK ABS SPEED SENSOR SIGNAL (See TEST MODE PROCEDURE
)
REPLACEMENT
1.REMOVE FRONT WHEELS
2.REMOVE FRONT STABILIZER LINK ASSY LH
a. Support the suspension lower arm assy with a jack using a wood block to avoid damage.
b. Remove the bolt and nut to separate the front stabilizer link assy LH.
c. Remove the nut and front stabilizer link assy LH.