2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 52: Speaker Circuit Wiring Diagram (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
Fig. 53: Speaker Circuit Wiring Diagram (2 Of 2)
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTI

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LEXUS LS430 2003  Factory Repair Manual a. Disconnect the connectors from the stereo component amplifier assy S28, S30 and speakers.  
b. Measure resistance between terminals of stereo component amplifier assy and speakers. 
Standard: Below

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LEXUS LS430 2003  Factory Repair Manual Fig. 55: Stereo Component Amplifier Assy - Speaker Assy (Standard Model) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual Fig. 56: Identifying Wiring Harness Connector Front No.1 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual Fig. 57: Identifying Wiring Harness Connector Front No.2 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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LEXUS LS430 2003  Factory Repair Manual Fig. 58: Identifying Wiring Harness Connector Rear No.2 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
OK: Go to next step  
2.INSPECT FRONT NO.1 SPEAKER ASSY 
a. Resistance check. 
1. Measure the res

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LEXUS LS430 2003  Factory Repair Manual NG: REPLACE FRONT NO.1 SPEAKER ASSY (SEE REPLACEMENT )  
OK: Go to next step  
3.INSPECT FRONT NO.2 SPEAKER ASSY 
a. Check that malfunction disappears when another speaker in a good condition is insta

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LEXUS LS430 2003  Factory Repair Manual OK: REPLACE REAR NO. 2 SPEAKER ASSY (SEE REPLACEMENT )  
NG: Go to next step  
6.INSPECT WOOFER 
a. Resistance check. 
1. Measure the resistance between the terminals of the speaker.  
Standard:  
TES