2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 41: Checking Wire Harness (Steering Lock ECU -Transponder Key Amplifier)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR  
OK: Go to next step  
5.CHECK

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LEXUS LS430 2003  Factory Repair Manual Fig. 43: Engine Immobilizer System Malfunction - Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.CHECK WIRE HARNESS (STEERING LOCK ECU - ECM) 
a. Disconnect the S

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 44: Checking Wire Harness (Steering Lock ECU -ECM)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR  
OK: REPLACE ECM  
CIRCUIT DESCRIPTION 
This circuit

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LEXUS LS430 2003  Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE 
1.INSPECT FUSE (MPX-B1, AM2, STR LOCK, D/C CUT) 
a. Remove the MPX-B1, AM2 and STR LOCK fuses from the passenger side J/B.  
b. Remov

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LEXUS LS430 2003  Factory Repair Manual Fig. 46: Checking Wire Harness (Steering Lock ECU - Battery & Body Ground) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR  
OK: REPLACE STEERING LOCK ECU

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LEXUS LS430 2003  Factory Repair Manual SYSTEM REFERENCE TABLE 
System NameProceed To
Front Power Seat Control SystemINITIALIZATION