2003 LEXUS LS430 Factory Repair Manual

Page 4209 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 25: Identifying Gauge Reading Graph 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
REPLACEMENT 
1.DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM 
a. Turn the A/C switch on.  
b. Operate the cool

Page 4210 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 26: Height Pressure To Refrigerant Amount Graph 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
3.WARM UP ENGINE 
4.INSPECT FOR REFRIGERANT LEAKAGE 
a. Perform in these conditions: 
Stop the engin

Page 4211 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 27: Bringing Gas Leak Detector Close To Drain Hose 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
HINT: 
<0024004900570048005500030057004b004800030045004f0052005a004800550003005000520057005200550

Page 4212 of 4500

LEXUS LS430 2003  Factory Repair Manual If there is leakage, check the tightening torque at the joints or evaporator.
Fig. 28: Checking For Leakage Of Refrigerant From Evaporator And Joint
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
COM

Page 4213 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 29: Identifying Refrigerant Line Components And Replacements (Single A/C) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 4214 of 4500

LEXUS LS430 2003  Factory Repair Manual

Page 4215 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 30: Identifying Refrigerant Line Components And Replacements (Dual A/C) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
COMPONENTS

Page 4216 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 31: Identifying Air Conditioning Panel Sub-Assy Components And Replacements 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
REPLACEMENT 
HINT: 
Installation is in the reverse order of removal.  
S