valve assy LEXUS LS430 2003 Factory User Guide

Fig. 106: Identifying Height Control Solenoid Valve Front LH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
RESULT DESCRIPTION
HINT:
When a malfunction is found in the front solenoid valve, replace the height control valve sub-assy No. 1.
HEIGHT CONTROL SOLENOID VALVE REAR RH:
a. Disconnect the height control solenoid valve connector.
b. Connect terminal 1 (SLRR) to the battery positive (+) terminal, and terminal 2 (GND) to the battery
negative (-) terminal.
c. Check the operating sound of the height control solenoid valve.
OK:
It should make an operating sound (click).
OKA
NGB

Fig. 107: Identifying Height Control Solenoid Valve Rear RH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
RESULT DESCRIPTION
HINT:
When a malfunction is found in the rear solenoid valve, replace the height control valve sub-assy No. 2.
HEIGHT CONTROL SOLENOID VALVE REAR LH:
a. Disconnect the height control solenoid valve connector.
b. Connect terminal 3 (SLRL) to the battery positive (+) terminal, and terminal 2 (GND) to the battery
negative (-) terminal.
c. Check the operating sound of the height control solenoid valve.
OK:
It should make an operating sound (click).
OKA
NGC

Fig. 108: Identifying Height Control Solenoid Valve Rear LH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
RESULT DESCRIPTION
HINT:
When a malfunction is found in the rear solenoid valve, replace the height control valve sub-assy No. 2.
B: REPLACE HEIGHT CONTROL VALVE SUB-ASSY NO. 1 (SEE REPLACEMENT
)
C: REPLACE HEIGHT CONTROL VALVE SUB-ASSY NO. 2 (SEE REPLACEMENT
)
A:Go to next step
5.INSPECT EXHAUST SOLENOID VALVE
a. Disconnect the exhaust solenoid valve connector.
b. Connect terminal 3 (SLEX) to the battery positive (+) terminal, and terminal 2 (GND) to the battery
ne
gative (-) terminal.
OKA
NGC

c. Check the operating sound of the exhaust solenoid valve.
OK:
It should make an operating sound (click).
HINT:
When a malfunction is found in the exhaust solenoid valve, replace the height control compressor assy.
NG: REPLACE HEIGHT CONTROL COMPRESSOR ASSY (SEE REPLACEMENT
)
OK:Go to next step
6.INSPECT HEIGHT CONTROL SENSOR LINK SUB-ASSY
a. Inspect and adjust the height control sensor link sub-assy (see ON
-VEHICLE INSPECTION ).
NG: REPLACE HEIGHT CONTROL SENSOR LINK SUB-ASSY
OK: CHECK AND REPAIR OR REPLACE PARTS
Air tube is clogged (see ON-VEHICLE INSPECTION ).
Compressor is faulty (see REPLACEMENT ).
Height control sensor sub-assy is faulty (see REPLACEMENT - HEIGHT CONTROL
SENSOR SUB-ASSY FRONT , REPLACEMENT - HEIGHT CONTROL SENSOR SUB-
ASSY REAR LH ).
Foreign material in the height control solenoid valve and/or exhaust solenoid valve (see
REPLACEMENT
- HEIGHT CONTROL COMPRESSOR ASSY , REPLACEMENT -
HEIGHT CONTROL VALVE SUB
-ASSY NO.1 , REPLACEMENT - HEIGHT CONTROL
VALVE SUB-ASSY NO.2 ).
Suspension control ECU malfunction (see REPLACEMENT ).
CIRCUIT DESCRIPTION

Fig. 11: Removing Bolt And Park/Neutral Position Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
26.INSTALL PARK/NEUTRAL POSITION SWITCH ASSY
a. Install the park/neutral position switch to the manual valve shaft.
b. Temporarily install the bolt.

Fig. 62: Removing Magnets
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4.REMOVE VALVE BODY OIL STRAINER ASSY
a. Remove the 4 bolts and oil strainer.

Fig. 68: Installing ATF Temperature Sensor And Lock Plate With Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
9.INSTALL VALVE BODY OIL STRAINER ASSY
a. Coat a new O-ring with ATF.
b. Install the O-ring.

Fig. 75: Removing Magnets
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4.REMOVE VALVE BODY OIL STRAINER ASSY
a. Remove the 4 bolts and oil strainer.

Fig. 78: Removing Bolt And Lock Plate, And Separating ATF Temperature Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
6.REMOVE TRANSMISSION VALVE BODY ASSY
a. Remove the 20 bolts and valve bod
y.

7.INSTALL TRANSMISSION VALVE BODY ASSY
a. Install the clutch control solenoid No.1 (SL1) and line pressure control solenoid (SLT) with the
lock plate and bolt.
Torque: 6.4 N.m (65 kgf.cm, 56 in..lbf)
b. Install the automatic transmission 3-way solenoid (SR) with the bolt.
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
c. Install the automatic transmission 3-way solenoid (S1) with the bolt.
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
d. Install the automatic transmission 3-way solenoid (S2) and automatic transmission 3-way solenoid
(S4) with the bolt.
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
e. Install the automatic transmission 3-way solenoid (S3) with the bolt.
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
f. Install the lock up control solenoid (SLU) and clutch control solenoid (SL2) with the lock plate and
bolt.
Torque: 6.4 N.m (65 kgf.cm, 56 in..lbf)