2003 LEXUS LS430 Factory Repair Manual

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Page 761 of 4500

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

Page 762 of 4500

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

Page 763 of 4500

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

Page 764 of 4500

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

Page 766 of 4500

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

Page 767 of 4500

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

Page 768 of 4500

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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