2003 LEXUS LS430 Factory Repair Manual

Page 1569 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 58: Identifying Clearance Warning ECU Assy Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: REPLACE CLEARANCE WARNING ECU ASSY (SEE REPLACE

Page 1570 of 4500

LEXUS LS430 2003  Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE 
1.INSPECT FUSE (RR IG FUSE) 
a. Remove the RR IG fuse from the luggage room J/B.  
b. Measure the resistance according to the value (

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LEXUS LS430 2003  Factory Repair Manual Fig. 60: Identifying RR IG Fuse Location 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: INSPECT FOR SHORT IN ALL COMPONENTS CONNECTED TO FUSE AND REPAIR 
OR REPLACE THEM IF NEEDED, AND REPLACE FUS

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LEXUS LS430 2003  Factory Repair Manual Standard:  
TESTER CONNECTION SPECIFIED CONDITION 
Fig. 61: Identifying C17 Connector Terminals (1 Of 2)
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CLE

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LEXUS LS430 2003  Factory Repair Manual Fig. 62: Identifying C17 Connector Terminals (2 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CLEARANCE WARNING ECU 
ASSY - BODY GROUND)  
OK: PROCEE

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LEXUS LS430 2003  Factory Repair Manual Fig. 63: Clearance Sonar Main Switch Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.READ VALUE OF HAND-HELD TESTER 
a. Connect the hand-held tester to the DLC3.

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LEXUS LS430 2003  Factory Repair Manual ITEM CONDITION DESCRIPTION
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS 
TABLE  
NG: Go To Next Step.  
2.INSPECT CLEARANCE WARNING ECU ASSY (CLSW TERMINAL) 
a. Disconnect the C17

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LEXUS LS430 2003  Factory Repair Manual Fig. 65: Identifying CLSW Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
OK: REPLACE CLEARANCE WARNING ECU ASSY (SEE REPLACEMENT
 )  
NG: Go To Next Step.  
3.CHECK HARNESS AND CONNECTOR (CL