content LEXUS LS430 2003 Factory Repair Manual

HINT:
The followings are the possible items to be customized.
AIR CONDITIONER
AIR CONDITIONER CUSTOMIZE PARAMETERS
SMOK - Body
ground (L14-16
- Body ground)L - Body
groundSmoke sensor
operation signal
Ignition switch ON. Rear A/C switch to
AUTO. By using cigarette smoke. Ignition
switch ON. Rear A/C switch to AUTO. By
not using cigarette smoke.
Above 4.0 V
Below 1.0 V
AUTO - Body
ground (L14-17
- Body ground)W -
Body
groundAuto switch
signal
Ignition switch ON. Rear A/C rear seat
AUTO indicator lights up. Ignition switch
ON. Rear A/C rear seat AUTO indicator
does not light up.
Below 1.0 V 10 to
14 V
RHR - Body
ground (L14-18
- Body ground)V -
Body
groundRear blower
motor operation
signal
Ignition switch ON. Rear A/C manual
mode. Rear A/C blower motor does not
operate. Ignition switch ON. Rear A/C
manual mode. Rear A/C blower motor
speed LO or HI. During actuator check
mode. Display code 0. Display code 2.
10 to 14 V Below
1.0 V 10 to 14 V
Below 1.0 V
RFR - Body
ground (L14-19
- Body ground)Y -
Body
groundRear blower
motor operation
signal
Ignition switch ON. Rear A/C blower
motor speed to except HI. Ignition switch
ON. Rear A/C blower motor speed to HI.
During actuator check mode. Display code
0. Display code 2.
10 to 14 V Below
1.0 V 10 to 14 V
Below 1.0 V
FRS - Body
ground (L14-20
- Body ground)B -
Body
groundExhaust damper
servomotor
operation signal
Ignition switch ON. Front A/C blower
motor operates. Push "FRS" switch.
Ambient temperature below -1 °C Ignition
switch ON. Front A/C blower motor
operates. Push "REC" switch.
10 to 14 V Below
1.0 V
(1)w/ Rear A/C
DISPLAY (ITEM)DEFAULTCONTENTSSETTING

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
The following can be customized.
WARNING
CUSTOMIZE PARAMETERS
SENSOR
CUSTOMIZE PARAMETERS
DISPLAY (ITEM)DEFAULTCONTENTSSETTING
F BUZ SPECIFIED
(Front buzzer specified)OFFFunction to make front buzzer sound when
obstacles are within approximately 500 to
1,000 mm (19.69 to 39.37 in.) in the front of
the vehicle.ON/OFF
R BUZ SPECIFIED
(Rear buzzer specified)ONFunction to make rear buzzer sound when
obstacles are within approximately 500 to
1,000 mm (19.69 to 39.37 in.) in the rear of
the vehicle.ON/OFF
NO MOVE BUZZ (No
move judgement buzzer)ONFunction to make buzzer sound when vehicle
speed is 0 km/h and sensors detect obstacles.ON/OFF
KEY BATTERY BUZ
(Key battery buzzer)ONFunction to make the warning available when
the smart key battery is low.ON/OFF
KEEP SENSE BUZ
(Keep sense status
buzzer)ONFunction to make buzzer sound when
distance between vehicle and obstacle does
not change for more than 3 seconds.ON/OFF
F&R BUZZER FREQ
(Front & rear buzzer
frequency)1.0/1.5Function to change frequency of front and
rear buzzers.(1/1.5)/ (1.3/1.8)/
(1.5/2)
F&R BUZZER VOLM
(Front & rear buzzer
volume)M2Function to change volume of front and rear
buzzers.L/M1/M2/M3/H
DISPLAY (ITEM)DEFAULTCONTENTSSETTING
R SENSOR (Rear
sensor)ONFunction to make 4 rear sensors available.ON/OFF

DISPLAY
DISPLAY ITEM DESCRIPTION
Check the circuits for each problem symptom in the order given in the table below, and proceed to the relevant
troubleshooting page.
REV RNG SENS
(Reverse range
sensor)
Fsde2,RFunction to set available sensors when shift
position is R.ALL/Fcrn4,R/Fsde2,R
NON-P/R RNG
SEN (Non P/R range
sensor)
FFunction to set available sensors when shift
position is not P or R.ALL/F,Rcrn2/F
SENSOR COND/N
(Sensor condition N
range)
ONFunction to make sensors available when shift
position is N.OFF/ON
F SIDE DIST SEN
(Front side distance
sensor)
LONG
Function to change maximum distance that front
side sensors are able to detect. (SHORT: 375
mm (14.76 in.), LONG: 500 mm (19.69 in.))
SHORT / LONG
DISPLAY (ITEM)DEFAULTCONTENTSSETTING
APPRCH DISP
OFF (Approach
display off)
OFF
Function to make multi-information display turn
off when vehicle starts to leave obstacles which
are within approximately 250 mm (9.84 in.) of
vehicle.
ON/OFF
DISP TIMEOUT
(Display timeout
time)
INVALID
Function to change time until multi-information
display turns off when detected distance by
sensors does not change.
5s/10s/20s/INVALID
SONAR DISP OFF
(Sonar display off
time)
3s
Function to change time until multi-information
display turns off after sensors stop detecting
obstacle.
1s/2s/3s/4s

Fig. 12: Identifying Multi-Information Display Areas
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
The multi-information display consists of three display areas (computer area, graphic area, and
warning area) and the master warning indicator. These areas display the contents given in the table
below.
A steering pad switch (for multi-information display) that switches the contents of the multi-
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ITEM DETAILS
3.MULTI-INFORMATION DISPLAY FLOW CHART
ItemDetails
Computer areaDisplays cruise information. In addition, the contents of the display can be switched by
operating the DISP1 of the steering pad switch.
Graphic area
Displays the following information (radar cruise, clearance sonar, open door, compass,
and outside temperature). The items from "Compass" to "Blank" (via outside
temperature) can be switched by operating the DISP2 of the steering pad switch.
Warning areaDisplays warning messages. These messages appear only if an abnormal signal has been
input by a system.
Master
warning
indicatorComes on/blinks with buzzer sounding in accordance to direction from the displayed
item in the warning area.

Fig. 27: Identifying Waveform 1
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Waveform 1 (Reference):
WAVEFORM 1 (REFERENCE)
ItemContents
Tool setting5V/DIV, 10 ms/DIV
Vehicle conditionEngine idle speed

Fig. 28: Identifying Waveform 2
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Waveform 2 (Reference):
WAVEFORM 2 (REFERENCE)
HINT:
As vehicle speed increases, the cycle of the signal waveform narrows.
COMBINATION METER INNER CIRCUIT
ItemContents
Tool setting5V/DIV, 20 ms/DIV
Vehicle conditionDriving at approx. 20 Km/h (12 mph)

Front power seat:
FRONT POWER SEAT - CUSTOMIZE PARAMETERS
1.INITIALIZE FRONT POWER SEAT CONTROL SYSTEM
a. The power seat ECU must be initialized under any of the following conditions.
The battery is disconnected.
The D/C cut fuse is replaced.
The power seat switch (power seat ECU) is replaced.
The power seat assy is removed from the vehicle.
b. Initialize the power seat ECU as follows.
1. Using the seat switches, fully slide the seat forward, fully recline the seatback forward, and
fully raise the seat cushion and headrest.
2. Using the seat switches, fully slide the seat rearward, fully recline the seatback rearward, and
fully lower the seat cushion and headrest.
Display (Item)DefaultContentsSetting
HEADREST CONTROLAVAILFunction that activates
physique compensation
headrest control when driver
seat is moved (sliding).NOT AVL/AVAIL

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. 36: Displaying Navigation Screen
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4.Check the navigation and disc information when the "Parts Information" screen is displayed.
NAVIGATION MANUFACTURER CHART
HINT:
The microphone is checked in the "Navigation Check (Microphone Check)" mode.
Illustrations may differ from the actual vehicle depending on vehicle specifications.
1.Start the diagnostic mode (see DIAGNOSTIC START
-UP/FINISH )
DisplayContents
Navigation Manufacturer/*1Navigation ECU manufacturer name is displayed.
Navigation Version/*2Navigation ECU version is displayed.
Disc Manufacturer/*3Map disc manufacturer is displayed.
Disc Version/*4Map disc version is displayed.

Fig. 43: Displaying Mode Screen
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Screen Description
DISPLAY CONTENTS CHART
d. LAN Monitor (Original) Screen
DisplayContents
Device name/*1Target Device
Segment/*2Target Device Logical address
DTC/*3DTC (Diagnostic Trouble Code)
Timestamp/*4The time and date of past DTCs displayed. (The year is displayed in 2 digit
format.)
Present
Code/*5The DTC output at the service check is displayed.
Past Code/*6Diagnostic memory results and recorded DTCs are displayed.