2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 3: Inserting Tester Probes Into Connector 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
4.CONNECTOR HANDLING 
a. When insertin
g tester probes into a connector, insert them from the rear of the

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LEXUS LS430 2003  Factory Repair Manual Fig. 4: Checking Continuity Between Connectors From Rear Side 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Use a repair wire to check the connector if it is impossible to check continuity from th

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LEXUS LS430 2003  Factory Repair Manual Fig. 5: Identifying Can Communication System Electrical Components Location (1 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual Fig. 6: Identifying Can Communication System Electrical Components Location (2 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual Fig. 7: Wiring Diagram - Can Communication System (W/LEXUS Navigation System) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual Fig. 8: Wiring Diagram - Can Communication System (W/O LEXUS Navigation System) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
HINT: 
The position of the terminus circuit differs in vehicles with and

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LEXUS LS430 2003  Factory Repair Manual conventional communication line (SIL). 
1.BRIEF DESCRIPTION 
a. The CAN (Controller Area Network) is a serial data communication system for real time 
application. It is a multiplex communication syst

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LEXUS LS430 2003  Factory Repair Manual U0073, U0100, U0101, U0122, U0123, U0124, U0126, U0132, U0145, U1101 
5.REMARK FOR TROUBLESHOOTING 
a. Trouble in the CAN bus (communication line) can be checked from the DLC3 (except when there 
is a