2003 LEXUS LS430 display

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Page 239 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 24: Identifying Luggage Room J/B ECU Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
LUGGAGE ROOM J/B ECU TERMINALS SPECIFICATIONS 
RFR1 - GND 
(A46-15 - A46-
6)G-B - 
W-BRear blower 
mo

Page 240 of 4500

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 
operati

Page 241 of 4500

LEXUS LS430 2003  Factory Repair Manual 1.STEP MOTORS INITIALIZING FUNCTION 
STEP motor initializing procedure (Automatic initializing) 
1. When the battery is reconnected and the ignition switch is turned to the ON position for the first

Page 248 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 31: Rear A/C Problem Symptoms Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
Air Purifier  
Fig. 32: Air Purifier Problem Symptoms Chart
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
Intel

Page 250 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 34: Diagnostic Trouble Code Information Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
HINT: 
*1 If the room temperature is approximately -20°C (-4°F) or lower, DTC B1411/11 may be output

Page 251 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 36: Room Temperature Sensor Circuit 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.READ VALUE ON HAND-HELD TESTER 
a. Connect the hand-held tester to the DLC3.  
b. Turn t

Page 259 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 42: Ambient Temperature Sensor Circuit 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.READ VALUE ON HAND-HELD TESTER 
a. Connect the hand-held tester to the DLC3.  
b. Tur

Page 266 of 4500

LEXUS LS430 2003  Factory Repair Manual 1.READ VALUE ON HAND-HELD TESTER 
a. Connect the hand-held tester to the DLC3.  
b. Turn the ignition switch to the ON position and push the hand-held tester main switch on.  
c. Select the item below