obd Lexus ES300 2002 Owner's Manuals (in English)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
53
If the lamp will not go off even after the several trips, contact
your Lexus dealer as soon as possible.
If the fuel tank is not empty or the fuel tank cap is not
loose...

There is a problem somewhere in the engine, emission
control system, electronic throttle control system, automatic
transmission electrical system or warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
If the engine speed does not increase with the accelerator
pedal depressed down, there may be a problem somewhere
in your electronic throttle control system.
At this time, vibration may occur. However, if you depress the
accelerator pedal more firmly and slowly, you can drive your
vehicle at low speeds. Have your vehicle checked by your
Lexus dealer as soon as possible.
Even if the abnormality of the electronic throttle control system
is corrected during low speed driving, the system may not be
recovered until the engine is stopped and the ignition key is
turned to “ACC” or “LOCK” position.
CAUTION
Be especially careful to prevent erroneous pedal
operation.
Emissions Inspection and Maintenance (I/M) programs
Your vehicle may not pass a state emission inspection if the
malfunction indicator lamp remains on. Contact your Lexus
dealer to check your vehicle’s emission control system and
OBD (OnBoard Diagnostics) system before taking your
vehicle for the inspection.
For details, see “Emissions Inspection and Maintenance (I/M)
programs” on page 285.
(i) “ABS” Warning Light
Vehicles without vehicle skid control system—
The light comes on with the ignition key turned to the “ON”
position. If the antilock brake system works properly, the light
turns off after a few seconds. Thereafter, if the system
malfunctions, the light comes on again.
When the “ABS” warning light is on (and the brake system
warning light is off), the antilock brake system does not
operate, but the brake system still operates conventionally.
When the “ABS” warning light is on (and the brake system
warning light is off), the antilock brake system does not
operate so that the wheels could lock up during a sudden
braking or braking on slippery road surfaces.

MAINTENANCE
285
If you notice any of these clues, take your vehicle to your Lexus
dealer as soon as possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the vehicle unchecked. It
could result in serious vehicle damage and possibly
personal injury.
EMISSIONS INSPECTION AND
MAINTENANCE (I/M) PROGRAMS
Some states have vehicle emission inspection programs
which include OBD (OnBoard Diagnostics) checks.
The OBD system monitors the operation of the emission
control system. When the OBD system determines that a
problem exists som ewhere in the emission control system, the
malfunction indicator lamp comes on. In this case, your vehicle
may not pass the I/M test and need to be repaired. Contact
your Lexus dealer to service the vehicle.
Even if the malfunction indicator lamp does not come on, your
vehicle may not pass the I/M test as readiness codes have not
been set in the OBD system.
Readiness codes are automatically set during ordinary driving.
However, when the battery is disconnected or run down, the
codes are erased. Also, depending on your driving habits, the
codes may not be completely set.
Also, if the malfunction indicator lamp had come on recently
due to temporary malfunction such as a loose fuel tank cap,
your vehicle may not pass the I/M test.
The malfunction indicator lamp will go off after taking several
driving trips, but the error code in the OBD system will not be
cleared unless about 40 trips or more are taken.
If your vehicle does not pass the I/M test even the malfunction
indicator lamp does not come on, contact your Lexus dealer to
prepare the vehicle for retesting.

ELECTRICAL COMPONENTS
327
24 SPARE5Spare fuse
25 SPARE10Spare fuse
No.FUSEAMPERECIRCUIT
26 ABS NO.160
All components in “RDI FAN”,
“ABS NO.2”, “ABS NO.3”,
“CDS”, “HTR (50 A)” and “ADJ
PDL” fuses and antilock brake
system, vehicle skid control
system, traction control
system, brake assist system
27 ALT120
All components in “DEF”, “PWR
NO.1”, “PWR NO.2”, “PWR
NO.3”, “PWR NO.4”, “STOP”,
“DOOR NO.2”, “OBD”, “PWR
SEAT”, “FUEL OPEN”, “FOG”,
“AMP”, “PANEL”, “TAIL”,
“AM1”, “CIG”, “POWER
POINT”, “RAD NO.2”,
“ECUACC”, “GAUGE1”,
“GAUGE2”, “ECUIG”,
“WIPER”, “WASHER”, “HTR
(10 A)”, “SEAT HTR”, and
“SUNSHADE” fuses
28 SPARE15Spare fuse
29 A/C10Air conditioning system
30 DRL5Daytime running light system
31 HEAD RH
LW R15Righthand headlight (low
beam)
32 HEAD LHLW R15Lefthand headlight (low
beam) and front fog lights
No.FUSEAMPERECIRCUIT
33 ECUB10
Multiplex communication
system (power door lock
system, security system,
autodoor locking system,
automatic light control system,
headlight delay off system, tail
light auto cut system,
illuminated entry system,
daytime running light system,
wireless remote control
system) air conditioning
system, electronic modulated
suspension, driving position
memory system
34 DOME7.5
Ignition switch light, interior
light, personal lights, foot
lights, door courtesy lights,
trunk light, vanity lights, garage
door opener, clock, outside
temperature gauge,
multiinformation display
35 CIG15Cigarette lighter
36 ECUACC5
Power rear view mirrors, clock,
multiinformation display,
driving position memory
system
37 RAD NO.210Car audio system, navigation
system

ELECTRICAL COMPONENTS
328
No.FUSEAMPERECIRCUIT
38 POWERPOINT15Power outlet
39 RAD NO.120Car audio system, navigation
system
40 GAUGE110
Gauges and meters, clock,
outside temperature gauge,
multiinformation display, shift
lock system
41 ECUIG10
SRS airbag system, power
windows, antilock brake
system, electronic modulated
suspension, driving position
memory system
42 WIPER25Windshield wipers
43 HTR10Air conditioning system
44 MIR
HTR10Outside rear view mirror
heaters
45 AM15Starting system
46 FOG15Front fog lights
47 SUN
SHADE15Rear sunshade
48 GAUGE210
Auto antiglare inside rear
view mirror, compass, backup
lights, automatic light control
system, automa tic headlight
leveling system, cruise control
system, seat belt reminder
lights
No.FUSEAMPERECIRCUIT
49 PANEL10
Glove box light, console box
light, clock, outside
temperature gauge,
multiinformation display,
instrument cluster lights,
instrument panel lights,
overdriveoff indicator light
50 TAIL10Tail lights, parking lights,
license plate lights
51 PWR NO.420Rear passenger’s power
window (left side)
52 PWR NO.220Front passenger’s door lock
system, front passenger’s
power window
53 OBD7.5Onboard diagnosis system
54 SEAT
HTR20Seat heaters
55 WASHER15Windshield washer
56 FA NRLY10Electric cooling fans
57 STOP15Stop lights, high mounted stop-
light
58 FUEL
OPEN5Fuel filler door opener
59 DOOR NO.225
Multiplex communication
system (power door lock
system, autodoor locking
system, wireless remote
control system)