LEXUS LS430 2003 Factory Repair Manual

Fig. 27: Bringing Gas Leak Detector Close To Drain Hose
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HINT:
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Hold the gas leak detector sensor under the drain hose.
When bringing the gas leak detector close to the drain hose, make sure that the gas leak
detector does not react to volatile gases.
If such reaction is unavoidable, the vehicle must be lifted up.
c. If a gas leak is not detected on the drain hose, remove the blower motor control (blower resistor)
from the cooling unit. Insert the gas leak detector sensor into the unit and perform the test.
d. Disconnect the connector and leave the pressure switch for approximately 20 minutes. Bring the
gas leak detector close to the pressure switch and perform the test.
e. Bring the gas leak detector close to the refrigerant lines and perform the test.
f. Remove the air duct No. 2.
g.Using a gas leak detector, check for leakage of refrigerant from evaporator and joint.

If there is leakage, check the tightening torque at the joints or evaporator.
Fig. 28: Checking For Leakage Of Refrigerant From Evaporator And Joint

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COMPONENTS

Fig. 29: Identifying Refrigerant Line Components And Replacements (Single A/C)
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Fig. 30: Identifying Refrigerant Line Components And Replacements (Dual A/C)
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COMPONENTS

Fig. 31: Identifying Air Conditioning Panel Sub-Assy Components And Replacements
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REPLACEMENT
HINT:
Installation is in the reverse order of removal.
See COMPONENTS .
1.RESTORE SHIP MODE SETTING (W/ CD CHANGER) (See PRECAUTION
)
2.REMOVE INSTRUMENT PANEL FINISH PANEL LOWER CENTER (See step 26 in
REPLACEMENT
)
3.REMOVE PANEL INSTRUMENT CLUSTER FINISH LOWER (See step 27 in
REPLACEMENT
)
4.REMOVE RADIO RECEIVER ASSEMBLY W/BRACKET (See step 4 in REPLACEMENT
)
5.CONFIRM SHIP MODE (W/ CD CHANGER) (See PRECAUTION
)
6.REMOVE TEMPERATURE CONTROL SWITCH ASSY
a. Using a screwdriver, release the 2 claws and remove the temperature control switch.
HINT:
Tape the screwdriver tip before use.
b. Employ the same manner described above to the other side.
c. Disconnect the connectors.

Fig. 32: Removing Claws And Temperature Control Switch
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7.REMOVE INTEGRATION CONTROL & PANEL ASSY
a. Remove the 2 bolts.

Fig. 33: Removing Integration Control And Panel Assy Bolts
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b. Release the 4 claws and remove the integration control & panel assy.

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8.REMOVE HEATER CONTROL BASE BRACKET NO. 1
a. Remove the 4 screws and 2 heater control base brackets No. 1.

Fig. 35: Removing Heater Control Base Brackets No. 1
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9.REMOVE AIR CONDITIONER CONTROL ASSEMBLY
a. Disconnect the connector.
b. Remove the 4 screws, release the 4 claws and remove the air conditioner control assembly.