LEXUS LS430 2003 Factory Repair Manual

LEXUS LS430 2003 Factory Repair Manual LS430 2003 LEXUS LEXUS https://www.carmanualsonline.info/img/36/57050/w960_57050-0.png LEXUS LS430 2003 Factory Repair Manual
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LEXUS LS430 2003  Factory Repair Manual Fig. 45: Identifying Power Source Circuit (Stereo Component Tuner) Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.INSPECT STEREO COMPONENT TUNER (B, ACC, GND) 
a

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LEXUS LS430 2003  Factory Repair Manual c. Measure the voltage according to the value (s) in the table below. 
TESTER CONNECTION CONDITION CHART 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN P

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LEXUS LS430 2003  Factory Repair Manual WIRING DIAGRAM 
Fig. 47: Stereo Component Amplifier Assy Wiring Diagram
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.INSPECT STEREO COMPONENT AMPLIFIER ASSY (+B, +B2, ACC, G

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LEXUS LS430 2003  Factory Repair Manual c. Measure the voltage according to the value (s) in the table below.  
TESTER CONNECTION CONDITION CHART 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN

Page 765 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 49: Identifying Standard Model 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
CIRCUIT DESCRIPTION 
This circuit provides the power to the audio and rear A/C control switch. 
WIRING DIAGRAM

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LEXUS LS430 2003  Factory Repair Manual Fig. 50: Identifying Audio And Rear A/C Control SW Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.INSPECT AUDIO AND REAR A/C CONTROL SWITCH (+B, ACC, GND) 
a. Di

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LEXUS LS430 2003  Factory Repair Manual NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS 
TABLE or DIAGNOSTIC TROUBLE CODE CHART  
Fig. 51: Inspecting Audio And Rear A/C Control S

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LEXUS LS430 2003  Factory Repair Manual If there is a short in this circuit, the stereo component amplifier assy detects it and stops output to the speakers.
Thus sound can not be heard from the speaker even if there is no malfunction in th

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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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