2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual <0029004c004a00110003001c0014001d0003002c0047004800510057004c0049005c004c0051004a0003002400580047004c005200030024005100470003003500480044005500030024001200260003002600520051005700550052004f00030026005

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LEXUS LS430 2003  Factory Repair Manual WIRING DIAGRAM 
Fig. 92: Identifying Radio Receiver Assy 
- Gateway ECU Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.INSPECT RADIO RECEIVER ASSY 
a. Measure th

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LEXUS LS430 2003  Factory Repair Manual Fig. 93: Inspecting Radio Receiver Assy 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPLACE RADIO RECEIVER ASSY (SEE REPLACEMENT
 )  
OK: Go to next step  
2.CHECK HARNESS AND CONNECTOR (RADIO

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LEXUS LS430 2003  Factory Repair Manual Fig. 94: Identifying Radio Assy Connector 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TX- - Body groundAlways10 kohms or higher

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LEXUS LS430 2003  Factory Repair Manual Fig. 95: Identifying Gateway ECU Connector 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBL

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LEXUS LS430 2003  Factory Repair Manual In AVC-LAN, radio receiver assy becomes the communication master, and the radio receiver assy has enough 
resistance necessary for transmitting the communication. 
WIRING DIAGRAM 
Fig. 96: Radio Recei

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LEXUS LS430 2003  Factory Repair Manual Fig. 97: Inspecting Radio Receiver Assy 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPLACE RADIO RECEIVER ASSY (SEE REPLACEMENT
 )  
OK: Go to next step  
2.CHECK HARNESS AND CONNECTOR (RADIO

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LEXUS LS430 2003  Factory Repair Manual Fig. 98: Identifying Radio Receiver Assy - Stereo Component Tuner Connector 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TXM- - MTX-AlwaysBelow 1 ohms
TXM+ - Body groundAlways10 kohms or higher
TXM-