2003 LEXUS LS430 evaporator

Fig. 52: Removing Evaporator Cover
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
20.REMOVE EVAPORATOR TEMPERATURE SENSOR
21.REMOVE HEATER RADIATOR UNIT SUB-ASSY
a. Remove the screw and clamp.
b. Remove the 2 screws, 2 clamps and heater radiator pipes.
c. Remove the 2 O-rings from the heater radiator pipes.
d. Pull out the heater radiator unit sub-assy.

Fig. 60: Installing Hexagon Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
28.INSTALL COOLER EVAPORATOR SUB-ASSY NO. 1
a. Install the cooler evaporator sub-ass
y No. 1 with the evaporator cover and 6 screws.

Fig. 61: Installing Cooler Evaporator Sub-Assy No. 1
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
29.INSTALL HEATER CASE SUB-ASSY
a. Install the heater case sub-ass
y with the 5 screws.

INSPECTION
1.INSPECT REAR BLOWER MOTOR CIRCUIT (See REAR BLOWER MOTOR CIRCUIT
)
2.EXHAUST DAMPER CONTROL SERVOMOTOR CIRCUIT (See EXHAUST DAMPER
CONTROL SERVOMOTOR CIRCUIT )
3.INSPECT REAR MAGNETIC VALVE CIRCUIT (See REAR MAGNETIC VALVE CIRCUIT
)
4.INSPECT SMOKE SENSOR CIRCUIT (See SMOKE SENSOR CIRCUIT
)
5.INSPECT EVAPORATOR SUB-ASSY (REAR)
a. Check the evaporator sub-assy (rear) fins for blockage.
If the fins are clogged, clean them with compressed air.
b. Check the fitting for cracks or scratches.
If necessary, repair or replace.
6.INSPECT COOLING BOX LAMP SUB-ASSY
a. Connect positive (+) lead to terminal 1 and negative (-) lead to terminal 2.
b. Check that the cooling box lamp sub-assy comes on.
If coolin
g box light does not come on, replace the cooling box lamp sub-assy.

Fig. 126: Removing Exhaust Damper Servomotor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
34.REMOVE EVAPORATOR SUB-ASSY (REAR)
a. Remove the 4 screws and cooler cover plate.
b. Remove the evaporator sub-assy (rear).

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.