2003 LEXUS LS430 air conditioning

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.

Fig. 112: Removing Air Duct No. 4
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
19.REMOVE REAR AIR CONDITIONING UNIT ASSY
a. w/cooling box models:
Remove the 4 cool box set bolts.

Fig. 113: Removing Rear Air Conditioning Unit Assy (W/Cooling Box Models)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Disconnect the connector.
c. Remove the 2 nuts and 2 bolts.
d. Remove the rear air conditioner unit ass
y.

Fig. 123: Removing Cooling Unit Blower Fan
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
30.REMOVE AIR CONDITIONING AMPLIFIER ASSY
a. Disconnect the connector.
b. Release the claw and remove the air conditioning amplifier assy.

Fig. 124: Removing Air Conditioning Amplifier Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
31.WIRING AIR INDICATOR HARNESS SUB-ASSY NO. 2
32.REMOVE BLOWER RESISTOR
a. Remove the screw and blower resister.

Fig. 127: Removing Evaporator Sub-Assy (Rear)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
35.REMOVE REAR COOLING UNIT EXPANSION VALVE
a. Using a hexagon wrench 5 mm (0.20 in.), remove the 2 hexagon bolts, air conditioning tube assy
and rear cooling unit expansion valve.
b. Remove the 4 O-rings from the rear cooling unit expansion valve.

Fig. 128: Removing Rear Cooling Unit Expansion Valve
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
36.INSTALL REAR COOLING UNIT EXPANSION VALVE
a. Sufficiently apply compressor oil to 4 new O-rings and fitting surface of the cooler expansion
valve.
Compressor oil: ND-OIL 8 or equivalent
b. Install the 4 O-rings on the rear cooling unit expansion valve.
c. Using a hexagon wrench 5 mm (0.20 in.), install the rear cooling unit expansion valve, air
conditioning tube assy with the 2 hexagon bolts.
Torque: 3.5 N.m (36 kgf.cm, 31 in.lbf)