2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 45: Climate Control Does Not Operate (Blinking Pattern 4) Wiring Diagram (2 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.CHECK SEAT HEATER (INDICATOR) 
a. Check th

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LEXUS LS430 2003  Factory Repair Manual RESULT REFERENCE 
B: Go to step 5  
A: Go to next step  
2.INSPECT FRONT SEAT HEATER SWITCH (THERMISTOR OF SEATBACK) (SEE 
INSPECTION
 ) 
NG: REPLACE FRONT SEAT HEATER SWITCH  
OK: Go to next step  
3

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 46: Identifying Seat Climate Control Blower Connector Terminals And Seat Climate 
Controller Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND C

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LEXUS LS430 2003  Factory Repair Manual Fig. 47: Identifying Seat Climate Controller Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPLACE FRONT SEAT HEATER SWITCH  
OK: REPLACE SEAT CLIMATE CONTROL CONTROLLER  
5.I

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LEXUS LS430 2003  Factory Repair Manual When the rear LH indicator is blinking, check the rear LH side connector. When the rear RH indicator is 
blinking, check the rear right RH side connector. 
a. Disconnect the C28 or C30 blower connecto

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 48: Identifying Seat Climate Control Blower Connector Terminals And Seat Climate 
Controller Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND C