Page 3 of 969

E50573
I22117
Condition : Periodically cools and then fails to cool
- HEATER & AIR CONDITIONERREFRIGERANT
55-3
2618 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
2. INSPECT REFRIGERANT PRESSURE WITH MAN-
IFOLD GAUGE SET
(a) This is a method in witch the trouble is located by using
a manifold gauge set. Read the manifold gauge pressure
when the these conditions are established.
Test conditions:
Temperature at the air inlet with the switch set
at RECIRC is 30 - 35 °C (86 - 95 °F)
Engine running at 1,500 rpm
Blower speed control switch at ºHIº position
Temperature control dial at ºCOOLº position
A/C switch ON
Fully open doors
(1) Normally functioning refrigeration system.
Gauge reading:
Low pressure side:
0.15 - 0.25 MPa (1.5 - 2.5 kgf/cm
2)
High pressure side:
1.37 - 1.57 MPa (14 - 16 kgf/cm
2)
(2) Moisture present in refrigeration system.
SymptomProbable causeDiagnosisRemedy
During operation, pressure on low
pressure side sometimes become
a vacuum and sometime normal
Moisture in refrigerating system
freezes at expansion valve orifice
causing a temporary stop of cycle,
however, when it melts, normal
state is restored. Drier in oversaturected state
Moisture in refrigerating system
freezes at expansion valve orifice
and blocks circulation of refriger-
ant(1) Replace condenser
(2) Remove moisture in cycle by
repeatedly evacuating air
(3) Supply proper amount of new
refrigerant
Page 17 of 969

550DB-02
I03839
Push
SSTPull
Release
Lever
I06919
Screw
Driver Disconnect the
tube using hand
I31522
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
55-17
2632 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
OVERHAUL
HINT:
COMPONENTS: See page 55-15
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM (See page 55-8)
SST 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070,
07117-88080)
2. DISCONNECT COOLER REFRIGERANT SUCTION
HOSE NO.1
(a) Install SST to piping clamp.
SST 09870-00015
HINT:
Confirm the direction of the piping clamp claw and SST using
the illustration showing on the caution label.
(b) Push down SST and release the clamp lock.
NOTICE:
Be careful not to deform the tube, when pushing SST.
(c) Pull SST slightly and push the release lever, then remove
the piping clamp with SST.
(d) Disconnect the cooler refrigerant suction hose No. 1.
NOTICE:
Do not use tools like screwdriver to remove the tube.
Cap the open fittings immediately to keep moisture or
dirt out of the system.
3. DISCONNECT COOLER REFRIGERANT LIQUID PIPE A
SST 09870-00025
HINT:
Disconnect cooler refrigerant liquid pipe A in the same way as the cooler refrigerant suction hose No. 1.
4. DISCONNECT HEATER OUTLET WATER HOSE
(a) Using pliers, grip the claws of clip and slide the clip and
disconnect the heater outlet water hose.
Page 18 of 969
I31636
I31637
I31497
55-18
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
2633 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
5. DISCONNECT HEATER INLET WATER HOSE
HINT:
Disconnect in the same way as the heater outlet water hose.
6. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-ASSY (See page 71-1 1)
HINT:
Refer to the instructions for removal of the instrument panel safety pad sub-assy.
7. REMOVE AIR DUCT REAR NO.1
(a) Remove the 2 screws, bolt and nut.
(b) Remove the air duct rear No. 1.
8. REMOVE AIR DUCT REAR NO.2
(a) Remove the 2 screws, bolt and nut.
(b) Remove the air duct rear No. 2.
9. REMOVE CONSOLE BOX DUCT NO.1
(a) Remove the clip and console box duct No. 1.
10. DISCONNECT FLOOR SHIFT PARKING LOCK CABLE ASSY
11. REMOVE WINDSHIELD WIPER RELAY ASSY
12. REMOVE HEADLAMP LEVELING ECU ASSY
Page 19 of 969
I31766
I315812 Clamps
I31501
I31502
I317682 Clamps
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
55-19
2634 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
13. REMOVE INSTRUMENT PANEL BRACE SUB-ASSY
NO.1
(a) Remove the bolt and earth wire.
(b) Release the 2 clamps.
(c) Remove the bolt and screw.
(d) Remove the nut and instrument panel brace sub-assy
No. 1.
14. REMOVE INSTRUMENT FINISH PANEL RETAINER
LOWER
(a) Remove the 2 bolts and instrument finish retainer lower.
15. REMOVE INSTRUMENT PANEL BRACE SUB-ASSY
NO.2
(a) Remove the 2 clamps, nut and passenger side junction
block.
Page 20 of 969
I31767
I31504
I31499
I31500
I31505
55-20
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
2635 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(b) Remove the 2 bolts and 2 earth wires.
(c) Remove the 2 nuts, bolt and instrument panel brace sub-
assy No. 2.
16. REMOVE HEATER TO FOOT DUCT NO.3
(a) Remove the clip and heater to foot duct No. 3.
17. REMOVE HEATER TO FOOT DUCT NO.1
(a) Remove the clip and heater to foot duct No. 1.
18. DISCONNECT STEERING COLUMN ASSY
(a) Remove the 3 nuts and driver side junction block.
Page 21 of 969
I31577
I315062 Clamps
I3176910 Clamps
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
55-21
2636 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(b) Remove the 2 nuts and steering side connector block.
(c) Release the 2 clamps.
(d) Remove the 3 bolts, disconnect the steering column assy.
19. REMOVE INSTRUMENT PANEL REINFORCEMENT
(a) Disconnect the 10 clamps and the wire harness.
Page 30 of 969
I31577
I31505
I31504
I31767
I317682 Clamps 55-30
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
2645 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(c) Install the steering side connector block with the 2 nuts.
(d) Install the driver side junction block with the 3 nuts.
Torque: 8.4 NVm (85 kgfVcm, 73 in.Vlbf)
38. INSTALL INSTRUMENT PANEL BRACE SUB-ASSY
NO.2
(a) Install the instrument panel brace sub-assy No. 2 with the
2 nuts and bolt.
(b) Install the 2 earth wires with the 2 bolts.
Torque: 8.4 NVm (85 kgfVcm, 73 in.Vlbf)
(c) Install the passenger side junction block with the nut and
2 clamps.
Torque: 8.4 NVm (85 kgfVcm, 73 in.Vlbf)
Page 44 of 969
550DH-02
I31635
Radiator Support Upper
O-ring
Cooler Condenser Assy
Cooler Dryer
Filter
Cap
9.8 (100, 85 in.Vlbf)
Non-reusable parts Compressor oil ND-OIL 8 or equivalent
9.8 (100, 85 in.Vlbf)
O-ring 5.4 (55, 47 in.Vlbf)
O-ring
12 (125, 9)
Air Cleaner Inlet No. 1
Air Cleaner Inlet Assy
NVm (kgfVcm, ftVlbf): Specified torque
Radiator Lower Air Deflector
Hood Lock Release Lever
Protector
55-44
- HEATER & AIR CONDITIONERCOOLER CONDENSER ASSY
2659 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
COMPONENTS