2003 LEXUS LS430 replacement

Fig. 76: Inspecting Solenoid Of Externally Changeable Compressor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
REPLACEMENT
1.DISCONNECT NEGATIVE TERMINAL CABLE FROM BATTERY
2.EVACUATE REFRIGERANT HFC-134A (R134A) (See REPLACEMENT
)
3.REMOVE AIR CLEANER INLET NO. 1 (See REPLACEMENT
)
4.REMOVE FAN AND GENERATOR V BELT (See REPLACEMENT
)
5.REMOVE ENGINE UNDER COVER NO. 1
6.DISCONNECT COOLER REFRIGERANT DISCHARGE HOSE NO. 1
a. Remove the nut and disconnect the cooler refrigerant discharge hose No. 1.
b. Remove the O-ring from the cooler refrigerant discharge hose No. 1.

Fig. 85: Installing Cooler Refrigerant Discharge Hose No. 1
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
16.INSTALL FAN AND GENERATOR V BELT (See REPLACEMENT
)
17.INSTALL AIR CLEANER INLET NO. 1 (See step 25 in REPLACEMENT
)
18.CONNECT NEGATIVE TERMINAL CABLE TO BATTERY
19.CHARGE REFRIGERANT (See REPLACEMENT
)
20.WARM UP ENGINE
21.INSPECT FOR REFRIGERANT LEAKAGE (See REPLACEMENT
)
ON-VEHICLE INSPECTION
1.INSPECT COOLER CONDENSER ASSY
a. If the fins of the cooler condenser assy are dirty, clean them with water and dry them with

Fig. 86: Identifying Cooler Condenser Assy Components And Replacements (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 87: Identifying Cooler Condenser Assy Components And Replacements (2 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OVERHAUL
HINT:
Installation is in the reverse order of removal.
See COMPONENTS .
1.DISCONNECT NEGATIVE TERMINAL CABLE FROM BATTERY
2.EVACUATE REFRIGERANT HFC-134A (R134A) (See REPLACEMENT
)
3.REMOVE AIR CLEANER INLET NO. 1 (See REPLACEMENT
)
4.REMOVE AIR CLEANER ASSY (See REPLACEMENT
)
5.DISCONNECT DISCHARGE HOSE SUB-ASSY NO. 1
a. Remove the bolt and disconnect the discharge hose sub-assy No. 1 from the condenser assy.
b. Remove the O-ring from the discharge hose sub-assy No. 1.

Fig. 89: Disconnecting Liquid Tube Sub-Assy A
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
7.REMOVE HIGH PITCHED HORN ASSY (See REPLACEMENT
)
8.REMOVE LOW PITCHED HORN ASSY (See REPLACEMENT
)
9.REMOVE SMOG VENTILATION SENSOR
a. Disconnect the connector.
b. Remove the bolt and smog ventilation sensor.

Fig. 103: Installing Discharge Hose Sub-Assy No. 1
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
17.CONNECT NEGATIVE TERMINAL CABLE TO BATTERY
18.CHARGE REFRIGERANT (See REPLACEMENT
)
19.WARM UP ENGINE
20.INSPECT FOR REFRIGERANT LEAKAGE (See REPLACEMENT
)
ON-VEHICLE INSPECTION
1.INSPECT EXPANSION VALVE
a. Check quantity of gas during refrigeration cycle.
b. Set on manifold gauge set.
c. Run engine.
1. Run the engine at 1,500 rpm for at least 5 minutes.
2. Then check that the high pressure reading is 1.37 to 1.57 Mpa (14 to 16 kgf.cm
2 , 199 to 288
psi).

Fig. 104: Identifying Rear Air Conditioning Unit Assy Components And Replacements (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 105: Identifying Rear Air Conditioning Unit Assy Components And Replacements (2 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.