2003 LEXUS LS430 Factory Repair Manual

Page 753 of 4500

LEXUS LS430 2003  Factory Repair Manual OK: Radio receiver assy is properly installed.
NG: REINSTALL THE RADIO RECEIVER ASSY PROPERLY  
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS 
TABLE  
INSPECTION PROCEDURE 
1.CHECK

Page 754 of 4500

LEXUS LS430 2003  Factory Repair Manual 3.REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK 
a. Replace the cassette tape with another one and recheck. 
1. Replace the cassette tape with another normal one to see if the same trouble occurs aga

Page 755 of 4500

LEXUS LS430 2003  Factory Repair Manual INSPECTION PROCEDURE 
1.REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK 
a. Replace the cassette tape with another one and recheck. 
1. Replace the cassette tape with another normal one to see if the s

Page 756 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 41: Raising Cassette Door 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.CHECK FOR ANY FOREIGN OBJECT 
a. Check for foreign objects. 
1. Check that no foreign objects or d

Page 757 of 4500

LEXUS LS430 2003  Factory Repair Manual trouble occurs again.  
OK: Malfunction disappears.  
OK: CASSETTE TAPE FAULTY  
NG: Go to next step  
3.CLEAN HEAD AND CHECK OPERATION 
a. Head cleaning 
1. Raise the cassette door with your finger.

Page 758 of 4500

LEXUS LS430 2003  Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
CIRCUIT DESCRIPTION 
This circuit provides the power to the radio receiver assy. 
WIRING DIAGRAM 
Fig. 43: Identifying Power Source Circuit (Radio Receiver

Page 759 of 4500

LEXUS LS430 2003  Factory Repair Manual a. Disconnect the radio receiver assy connector R2.  
b. Measure the resistance according to the value (s) in the table below. 
TESTER CONNECTION CONDITION CHART 
c. Measure the voltage according to t

Page 760 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 44: Disconnecting Radio Receiver Assy Connector R2 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
CIRCUIT DESCRIPTION 
This circuit provides the power to the stereo component tuner. 
WIRING DIAGR