2003 LEXUS LS430 Factory Repair Manual

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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

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LEXUS LS430 2003  Factory Repair Manual METER:  
SPEED METER DATA LIST REFERENCE 
OK:  
Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.  
NG: Go to step 3  
OK: REPLACE COMBINATION METER ASSY (SEE OVERH

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LEXUS LS430 2003  Factory Repair Manual Fig. 46: Identifying Terminals C12-18 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
e. Check the si
gnal waveform according to the condition (s) in the table below.

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LEXUS LS430 2003  Factory Repair Manual Fig. 47: Identifying Signal Waveform 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
SIGNAL WAVEFORM CONDITIONS 
OK:  
As shown in the illustration  
HINT: 
As vehicle speed increases, the cycle of the

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LEXUS LS430 2003  Factory Repair Manual 5.CHECK HARNESS AND CONNECTOR (ABS & TRACTION ACTUATOR ASSY (VSC) -
COMBINATION METER ASSY) (SEE HOW TO PROCEED WITH TROUBLESHOOTING
 ) 
a. Disconnect the C12 and S42 connectors.  
b. Measure the resi

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 48: Identifying C12 And S42 Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR  
OK: GO TO NEXT STEP  
6.INSPECT ABS & TRACTION ACTUATOR ASSY (VS

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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