2003 LEXUS LS430 diagram

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Page 1770 of 4500

LEXUS LS430 2003  Factory Repair Manual in the warning area. 
SFI (EFI) system (see SYSTEM DIAGRAM )  
VSC system (see HOW TO PROCEED WITH TROUBLESHOOTING )  
CRUISE system (see HOW TO PROCEED WITH TROUBLESHOOTING)

Page 1782 of 4500

LEXUS LS430 2003  Factory Repair Manual METER ACTIVE TEST REFERENCE 
WIRING DIAGRAM 
and engine idling
TIRE PRESS WARNIndicat. Lamp TIRE PRESS (OFF/ON)Confirm that the vehicle is stopped 
and engine idling
AUTO LV INDICIndicat. Lamp HEADLAM

Page 1783 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 43: Combination Meter Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECT PROCEDURE 
1.INSPECT COMBINATION METER ASSY 
a. Measure the resistance according to the value (s) in th

Page 1785 of 4500

LEXUS LS430 2003  Factory Repair Manual WIRING DIAGRAM 
Fig. 45: Speedometer Wiring Diagram
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.PERFORM ACTIVE TEST BY HAND-HELD TESTER 
a. Operate the hand-held tester acc

Page 1792 of 4500

LEXUS LS430 2003  Factory Repair Manual WIRING DIAGRAM 
Fig. 50: Tachometer Wiring Diagram
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.PERFORM ACTIVE TEST BY HAND-HELD TESTER 
a. Operate the hand-held tester acco

Page 1798 of 4500

LEXUS LS430 2003  Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: GO TO ENGINE CONTROL SYSTEM (SEE REPLACEMENT
 )  
WIRING DIAGRAM 
Fig. 55: Fuel Receiver Gauge Wiring Diagram
 
Courtesy of TOYOTA MOTOR SALES, U.S.A.,

Page 1810 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 63: Identifying Fuel Sender Gauge Assy And Luggage Room Junction Block Assy Connector 
Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: RE

Page 1811 of 4500

LEXUS LS430 2003  Factory Repair Manual OK:  
Needle indication is normal.  
NG: REPLACE COMBINATION METER ASSY (SEE OVERHAUL
 )  
OK: GO TO NEXT STEP  
2.READ VALUE OF HAND-HELD TESTER (ENGINE COOLANT) 
a. Operate the hand-held tester acco