LEXUS LS430 2003 Factory Repair Manual

Torque: 35 N.m (355 kgf.cm, 26 ft.lbf)
Fig. 11: Connecting Fuel Pipe Sub
-Assy No. 2
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
18.INSTALL VACUUM SWITCHING VALVE ASSY FOR EVAP
a. Install the VSV with the bolt.
Torque: 7.5 N.m (76 kgf.cm, 66 in.lbf)
19.INSTALL V-BANK COVER BRACKET NO. 4
a. Install the cover bracket with the 2 nuts.
Torque: 7.5 N.m (76 kgf.cm, 66 in.lbf)
20.INSTALL V-BANK COVER BRACKET NO. 3
a. Install the cover bracket with the bolt.
Torque: 7.5 N.m (76 kgf.cm, 66 in.lbf)
21.INSTALL V-BANK COVER BRACKET NO. 2
a. Install the cover bracket with the bolt.
Torque: 7.5 N.m (76 kgf.cm, 66 in.lbf)
22.INSTALL V-BANK COVER BRACKET NO. 1

a. Install the cover bracket with the bolt.
Torque: 7.5 N.m (76 kgf.cm, 66 in.lbf)
23.INSTALL THROTTLE BODY ASSY
a. Install the throttle body with the 2 bolts and 2 nuts.
b. Connect the water by-pass hose.
c. Connect the PCV hose.
d. Connect the connector to the throttle body.
24.INSTALL INTAKE AIR CONNECTOR PIPE
a. Install the intake air connector pipe with the bolt and hose clamp.
Torque:
4.0 N.m (40 kgf.cm, 35 in.lbf) for hose clamp
5.0 N.m (50 kgf.cm, 44 in.lbf) for bolt
b. Connect the air hose and ventilation hose No. 1 together.
25.INSTALL AIR CLEANER INLET NO. 1
26.INSPECT FUEL PUMP OPERATION AND CHECK FOR FUEL LEAKS
27.INSTALL V-BANK COVER
a. Install the V-bank cover with the 2 nuts.
Torque: 5.0 N.m (50 kgf.cm, 44 in.lbf)
28.REFILL ENGINE COOLANT
29.CHECK FOR ENGINE COOLANT LEAKS
a. Check for engine coolant leaks.
If leaks are present, find the leak and repair or replace parts as necessar
y.

KEY REMINDER WARNING SYSTEM REFERENCE
System NameSee Procedure
Front Power Seat Control SystemINITIALIZATION

Fig. 1: Locating Components Of Key Reminder Warning System
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 2: System Diagram (W/O Smart Key System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
COMMUNICATION LINE REFERENCE
SenderReceiverSignalCommunication
Line
Transponder Key
ECUMeter ECUBuzzer Sound SignalBEAN
Driver Door ECUTransponder Key
ECUFront Door Courtesy Switch Signal
(Driver Side)BEAN

Fig. 3: System Diagram (W/ Smart Key System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
COMMUNICATION LINE REFERENCE
1.FUNCTION OF COMPONENT
SenderReceiverSignalCommunication
Line
Steering Lock
ECUMeter ECUBuzzer Sound SignalBEAN
Driver Door ECUSteering Lock
ECUFront Door Courtesy Switch Signal (Driver
Side)BEAN

Fig. 4: Function Of Component
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2.KEY REMINDER WARNING SYSTEM FUNCTION
a. w/o Smart key system:
When the driver door is opened with the ignition switch in the ACC or LOCK position, this system
sounds a buzzer to warn the driver that the ignition key has not been removed from the ignition key
cylinder.
b. w/ Smart key system:
For the vehicles with the smart key system, with the ignition switch OFF and the smart key in the ignition
key cylinder, opening the driver door causes this system to sound a key reminder warning buzzer. This
system can also sound a key reminder warning buzzer when the smart key is not inserted into the ignition
key cylinder (smart key is in the driver's possession). For details, refer to the SMART KEY SYSTEM

section.
HINT:
Use this procedure to troubleshoot the key reminder warning system.
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1.VEHICLE BROUGHT TO WORKSHOP
2.CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3.INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX
COMMUNICATION SYSTEM (BEAN)
a. Use the hand-held tester to check for normal function of the multiplex communication system.
1. (ECU not connected, communication line malfunctioning) Without code outputs, proceed to
A.
2. (ECU not connected, communication line malfunctioning) With code outputs, proceed to B.
B: Go to MULTIPLEX COMMUNICATION SECTION (See DIAGNOSTIC TROUBLE CODE
CHART )

A: GO TO NEXT STEP
4.(See PROBLEM SYMPTOMS TABLE
)
a. If the fault is not listed on the problem symptoms table, proceed to A.
b. If the fault is listed on the problem symptoms table, proceed to B.
B: Go to step 6
A: GO TO NEXT STEP
5.OVERALL ANALYSIS AND TROUBLESHOOTING
a. (see DATA LIST/ACTIVE TEST
).
1. Inspection with the hand-held tester (DATA LIST).
2. Inspection with the hand-held tester (ACTIVE TEST).
b. (see TERMINALS OF ECU
).
c. (see ON
-VEHICLE INSPECTION ).
d. (see INSPECTION
).
6.ADJUST, REPAIR OR REPLACE
7.CONFIRMATION TEST
END

Fig. 5: Customer Problem Analysis Check Sheet
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
The following items can be customized.
Meter ECU:
CUSTOMIZE PARAMETERS
Display (Item)DefaultContentsSetting
KEY REMND
VOLUMLARGEFunction that changes key reminder
buzzer's volumeLARGE/MEDIUM/SMALL

Fig. 6: Problem Symptoms Table
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1.CHECK TRANSPONDER KEY ECU ASSY
KEY REMND
SOUNDNORMALFunction that changes key reminder
buzzer's frequencyNORMAL/FAST/SLOW/0s