2003 LEXUS LS430 Factory Repair Manual

Page 1633 of 4500

LEXUS LS430 2003  Factory Repair Manual rear right side is blinking, check the rear right side connector.
a. Disconnect the C27 or C29 blower connector.  
b. Measure the resistance of the wire harness side connector.  
Standard:  
Rear LH

Page 1634 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 31: Identifying Seat Climate Control Blower Connector Terminals And Climate Control 
Switch Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND CO

Page 1635 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 32: Climate Control Does Not Operate (Blinking Pattern 3) Wiring Diagram (1 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 1636 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 33: Climate Control Does Not Operate (Blinking Pattern 3) Wiring Diagram (2 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 1637 of 4500

LEXUS LS430 2003  Factory Repair Manual INSPECTION PROCEDURE 
1.CHECK SEAT HEATER (INDICATOR) 
a. Check that the climate control indicator is blinking.  
Result:  
RESULT REFERENCE 
B: Go to step 8  
A: Go to next step  
2.INSPECT FRONT SEA

Page 1638 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 34: Identifying Seat Climate Control Blower Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR  
OK: Go to next step  
4.CHECK WIRE HAR

Page 1639 of 4500

LEXUS LS430 2003  Factory Repair Manual TESTER CONNECTION AND SPECIFIED CONDITION - DRIVER SIDE 
Passenger side  
TESTER CONNECTION AND SPECIFIED CONDITION - PASSENGER SIDE 
Fig. 35: Identifying Seat Climate Control Blower Connector Termina

Page 1640 of 4500

LEXUS LS430 2003  Factory Repair Manual (SEE INSPECTION ) 
NG: REPLACE SEAT CLIMATE CONTROL CONTROLLER  
OK: Go to next step  
6.CHECK WIRE HARNESS (SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL 
ECU) - SEAT CLIMATE CONTROLLER) 
HINT: 
When