2003 LEXUS LS430 Factory Repair Manual

Page 1817 of 4500

LEXUS LS430 2003  Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: REPLACE AIRBAG SENSOR ASSY CENTER (SEE HOW TO PROCEED WITH 
TROUBLESHOOTING )  
WIRING DIAGRAM 
Fig. 70: P

Page 1818 of 4500

LEXUS LS430 2003  Factory Repair Manual PROCEED WITH TROUBLESHOOTING) and A/C system (see HOW TO PROCEED WITH 
TROUBLESHOOTING ). 
1.PERFORM ACTIVE TEST BY HAND-HELD TESTER 
a. Operate the hand-held tester according to the steps on the disp

Page 1819 of 4500

LEXUS LS430 2003  Factory Repair Manual C: Go to step 9  
A: GO TO NEXT STEP  
3.INSPECT FRONT SEAT INNER BELT ASSY (PASSENGER SIDE) 
a. Disconnect the connector from the front seat inner belt assy (FR Passenger Side).  
b. Measure the resi

Page 1820 of 4500

LEXUS LS430 2003  Factory Repair Manual 4.CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSY - BODY 
GROUND) (SEE HOW TO PROCEED WITH TROUBLESHOOTING
 ) 
a. Disconnect the connector from the front seat inner belt assy (FR Passenger Sid

Page 1821 of 4500

LEXUS LS430 2003  Factory Repair Manual a. Disconnect the B5 and A25 connectors.  
b. Measure the resistance according to the value (s) in the table below.  
Standard  
RESISTANCE SPECIFICATIONS 
Tester ConnectionConditionSpecified Conditio

Page 1822 of 4500

LEXUS LS430 2003  Factory Repair Manual

Page 1823 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 73: Identifying B5 And A25 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: REPLACE AIRBAG SENSOR ASSY CENTER (SEE HOW TO PROCEED

Page 1824 of 4500

LEXUS LS430 2003  Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: GO TO NEXT STEP  
7.INSPECT CLOCK ASSY 
a. Disconnect the clock assy connector.  
b. Measure the voltage according to the value (s) in the table below.