2005 LEXUS LS430 air conditioning

INTRODUCTION
437
DOITYOURSELF SERVICEPRECAUTIONS
If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.
You should be aware that improper or incomplete servicing
may result in operating problems.
Performing do −it−yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus Warranty statement for details and suggestions.
This Section gives instructions only for those items that are
relatively easy for an owner to perform. As explained in
Section 5, there are still a number of items that must be
performed by a qualified technician with special tools.
For information on tools and parts for do −it −yourself
maintenance, see “Parts and tools” on page 439.
Utmost care should be taken when working on your vehicle to
prevent accidental injury. Here are a few precautions that you
should be especially careful to observe:
CAUTION
 When the engine is running, keep hands, clothing,
and tools away from the moving fan and engine drive
belt. (Removing rings, watches, and ties is
advisable.)
 Right after driving, the engine compartment the
engine, radiator, exhaust manifold and power
steering fluid reservoir, etc. will be hot. So be
careful not to touch them. Oil and other fluids may
also be hot.
 Do not leave anything that may burn easily, such as
paper or rags, in the engine compartment.
 Do not smoke, cause sparks or allow open flames
around fuel or the battery. Their fumes are
flammable.
 Do not get under your vehicle with just the body jack
supporting it. Always use automotive jack stands or
other solid supports.
 Be sure the ignition is off if you work near the electric
cooling fan or radiator grille. With the ignition on, the
electric cooling fan may automatically start to run if
the air conditioning is on and/or if the coolant
temperature is high.
 Use eye protection whenever you work on or under
your vehicle where you may be exposed to flying or
falling material, fluid spray, etc.
 Be extremely cautious when working on the battery.
It contains poisonous and corrosive sulfuric acid.

ELECTRICAL COMPONENTS
493
No.FUSEAMPERECIRCUIT
9 PWR
OUTLET15Power outlet
10 DCIG15Rear cigarette lighter
11 OBD7.5On− board diagnosis system
12 AM17.5Starting system
13 ABSIG7.5Vehicle stability control system
14 D B/ANC5Seat belts
15 SECURITY7.5Theft deterrent system
16 A/C7.5Air conditioning system
17 STOP5Stop lights
18 D RRIG10Refreshing seat
19 IG230SRS airbag system, Engine
immobilizer system, Steering
lock system, Starting system
20 HAZ15Emergency flashers
21 STR LOCK7.5Steering lock system
22 AM27.5All components in “STA” and
“IG2”, Starting system
23 MPXB17.5
Power door lock system,
Engine immobilizer system,
Steering lock system, Front
power seat, Rear power seat
24 MPXB37.5
Tilt and telescopic steering,
Headlight switch, Windshield
wiper and washer switch, Turn
signal switch
No.FUSEAMPERECIRCUIT
25 DOME10
Vanity lights, Outer foot lights,
Ignition switch light, Clock,
Gauges and meters, Interior
lights, Personal lights
26 MPXB27.5Gauges and meters, Vehicle
stability control system,
Illuminated entry system, TEL
27 P RRIG10Refreshing seat
28 HLP LVL7.5Headlight leveling system,
Adaptive Front Lighting System
(AFS)
29 PIG7.5Rain sensor, Air conditioning
system, Moon roof,
Multi −information display, Clock
30 P S/HTR15Seat heater, Climate control
seat system
31 PACC7.5
Air conditioning system, Audio
system, Clock,
Multi −information display,
Illuminated entry system
32 PCIG15Front cigarette lighter
33 RADIO
NO.17.5Audio system
34 RR DOOR LH20Power door lock system, Power
window, Door closer system,
Door courtesy lights

ELECTRICAL COMPONENTS
494
No.FUSEAMPERECIRCUIT
35 P DOOR25
Power door lock system, Power
rear view mirror control system,
Outside rear view mirror
defogger, Door closer system,
Door courtesy lights, Power
windows
36 TEL7.5Audio system, Navigation
system
37 P B/ANC5Seat belts, Seat belt buckle
illumination
38 RR DOORRH20Power door lock system, Power
window, Door closer system,
Door courtesy lights
39 D DOOR25
Power door lock system, Door
closer system, Power rear view
mirror control system, Outside
rear view mirror defogger, Door
courtesy lights, Power windows
40 RR IG7.5
Lexus park assist system,
Electronically modulated air
suspension system, Theft
deterrent system, TEL
41 RR ACC7.5Audio system, TEL
42 RR ECUB7.5Rear air conditioning system,
Theft deterrent system, Trunk
light, Refreshing rear seat
43 RR A/C7.5Rear air conditioning system,
Air purifier
44 RR S/HTR30Seat heater, Climate control
seat system
No.FUSEAMPERECIRCUIT
45 RR
S/SHADE15Sunshade
46 LCE LP7.5License plate lights
47 S/ROOF30Moon roof
48 FUEL OPN10Fuel opener system, Trunk lid
closer system
49 AMP30Audio system
50 P P/SEAT30Power seat system
51 RR SEAT LH30Power seat system
52 RR SEATRH30Power seat system
53 LUG J/B50
All components in “RR SEAT
RH”, “RR SEAT LH”, “S/ROOF”,
“AMP”, “RR IG”, “RR ECU −B”,
“P P/SEAT”, “RR S/HTR”, “RR
S/SHADE”, “RR A/C”, “RR
ACC”, “FUEL OPN” and “LCE
LP”, Tail lights and Stop lights
54 ABS 250Vehicle stability control system
55 HEATER50Air conditioning system
56 ABS 130Vehicle stability control system
57 DEFOG40Rear window defogger
58 AIR SUS40Electronically modulated air
suspension system

ELECTRICAL COMPONENTS
495
No.FUSEAMPERECIRCUIT
59 R/B60
All components in “FR FOG”,
“TAIL”, “WASHER”, “FR IG”,
“WIP”, “H−LP CRN” and “A/C
IG”
60 FA N80Air conditioning system
61 DJ/B80
All components in “TI & TE”, “D
P/SEAT”, “A/C”, “OBD”,
“STOP”, “AM1”, “MPX −IG”,
“ABS− IG”, “GAUGE”,
“AIRSUS”, “D S/HTR”,
“SECURITY”, “PANEL”, “D
B/ANC”, “PWR OUTLET”,
“D− CIG”, “D RR− IG” and
“D−ACC”
62 ALT140Charging system
63 PJ/B80
All components in “RR DOOR
RH”, “RR DOOR LH”, “D
DOOR”, “H− LP LVL”, “P
DOOR”, “P S/HTR”, “P− IG”,
“P− ACC”, “P B/ANC”, “P −CIG”,
“TEL” and “P RR −IG”
64 BATT30All components in “RADIO
NO.1”, “AM2”, “HAZ” and “STR
LOCK”
65 ST30Starting system
66 D/C CUT20All components in “DOME”,
“MPX− B1”, “MPX− B2” and
“MPS−B3”
67 ALTS5Charging system
68 FA N50Air conditioning system
No.FUSEAMPERECIRCUIT
69 LUG J/B60
All components in “RR SEAT
RH”, “RR SEAT LH”, “S/ROOF”,
“AMP”, “RR IG”, “RR ECU −B”,
“P P/SEAT”, “RR S/HTR”, “RR
S/SHADE”, “RR A/C”, “RR
ACC”, “FUEL OPN” and “LCE
LP”, Tail lights and Stop lights
70 HLP R
LW R15Right− hand headlight (low
beam)
71 HLP L
LW R15Left− hand headlight (low beam)
72 EFI NO.27.5Multiport fuel injection
system/sequential multiport fuel
injection system
73 STA7.5Multiport fuel injection
system/sequential multiport fuel
injection system
74 INJ10Multiport fuel injection
system/sequential multiport fuel
injection system
75 IGN7.5Multiport fuel injection
system/sequential multiport fuel
injection system
76 FR IG7.5
Electric cooling fan, Headlight
cleaner, Charging system,
Starting system, Rear window
defogger
77 A/C IG7.5Air conditioning system
78 WIP30Windshield wiper

BODY
517
Carpets, Windows and Seat Belts374.
Begin by vacuuming thoroughly to remove as much dirt as
possible. Several types of foam cleaners are available; some
are in aerosol cans and others are powders or liquids which
you mix with water to produce a foam. To shampoo the
carpets, use a sponge or brush to apply the foam. Rub in
overlapping circles. Do not apply water − the best results are
obtained by keeping the carpet as dry as possible. Read the
shampoo instructions and follow them closely.
The seat belts may be cleaned with mild soap and water
or with lukewarm water.
Use a cloth or sponge. As you are cleaning, check the belts
for excessive wear, fraying or cuts.
NOTICE
 Use a good foamtype shampoo to clean the carpets.
 Do not use dye or bleach on the belts it may weaken
them.
 Do not use the belts until they become dry.
 The windows may be cleaned with any household
window cleaner.
 When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires or
connectors.
Air Conditioning Control Panel, Audio
System, Instrument Panel, Console Panel,
and Switches
Use a soft damp cloth for cleaning.
Soak a clean soft cloth in water or lukewarm water then lightly
wipe off any dirt.
NOTICE
 Do not use organic substances (solvents, kerosene,
alcohol, gasoline, etc.) or alkaline or acidic solutions.
These chemicals can cause discoloring, staining or
peeling of the surface.
 If you use cleaners or polishing agents, make sure
their ingredients do not include the substances
mentioned above.
 If you use a liquid car freshener , do not spill the liquid
onto the vehicle’s interior surfaces. It may contain
the ingredients mentio ned above. Immediately clean
any spill using the method mentioned above.
If you have any questions about the cleaning of your
Lexus, your local Lexus dealer will be pleased to answer
them.