2003 HONDA CIVIC HATCHBACK fuel

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Youshouldcheckthefollowing
items at the specif ied intervals. If
you are unsure of how to perf orm
any check, turn to the page given.
Engine oil level Check every
time you fill the fuel tank. See
page .
Engine coolant level Check the
radiator reserve tank every time
youfillthefueltank.Seepage .Tires Check the tire pressure
monthly. Examine the tread f or
wear and foreign objects. See page
.
Windshield washer f luid Check
the level in the reservoir monthly.
If weather conditions cause you to
use the washers f requently, check
the reservoir each time you stop
f or f uel. See page . Lights Check the operation of
the headlights, parking lights,
taillights, high-mount brake light,
turn signals, brake lights, and
license plate lights monthly. See
page .
Brakes Check the f luid level
monthly. See page . 132
133
176 177 193
200
Owner Maintenance Checks
Maint enance 165

Youshouldalsohavethedealer
inspect your car if this indicator
comes on repeatedly, even though it
may turn of f as you continue driving.
This indicator should light when the
ignition switch is ON (II), and go out
af ter the engine starts. If it comes on
at any other time, it indicates one of
the engine’s emissions control
systems may have a problem. Even
though you may f eel no dif f erence in
your car’s perf ormance, it can
reduce your f uel economy and cause
your car to put out excessive
emissions. Continued operation may
cause serious damage. If you have recently ref ueled your
car, the cause of this indicator
coming on could be a loose or
missing f uel f ill cap. Check the cap
and tighten it until it clicks several
times. Replace the fuel fill cap if it is
missing. Tightening the cap will not
make the indicator turn of f
immediately; it takes at least one
driving trip.
If the indicator remains on, or the
f uel cap was not loose or missing,
have the car checked by the dealer
as soon as possible. Drive
moderately until the dealer has
inspected the problem. Avoid f ull-
throttle acceleration and driving at
high speed.
Malf unction Indicator L amp
T aking Care of t he Unexpect ed
236 MALFUNCTION INDICATOR LAMP
If you keep driving with the
malf unction indicator lamp on, you can
damage your car’s emissions controls
and engine. Those repairs may not be
covered by your car’s warranties.

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No. No.
Amps. Circuits Protected Amps. Circuits Protected
123456789
10 111213141516171819202122 23 2425
15A20A
(10A) 10A
7.5A
(20A) 7.5A10A
7.5A Ignition Coil
LAF Heater
Daytime Running Lights
Alternator
Not Used
Power Window Relay
Moonroof
ACC Radio
Rear Wiper
Meter 7.5A
(7.5A) 10A10A
(20A) 15A15A
7.5A 30A 20A20A ABS
Daytime Running Lights
SRS
Power Mirror
Not Used
Heated Seat
Fuel Pump
ACC Cigarette Lighter
Turn Signal Lights
Front Wiper
Not Used
Front Passenger’s Power
Window
Driver’s Power Window
Not Used
Not Used
2: Not Used
1: On Canadian model
1 1
2
T aking Care of t he Unexpect ed
Fuses
244
INTERIOR FUSE BOX

Thediagramsinthissectiongive
you the dimensions and capacities of
your Honda, and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your car’s tires and
emissions control systems.................
Identif ication Numbers . 248
................................
Specif ications . 250
DOT Tire Quality Grading
......................
(U.S. Vehicles) . 252
.................................
Treadwear . 252
......................................
Traction . 252
.............................
Temperature . 253 .........................
Oxygenated Fuels . 254
......
Driving in Foreign Countries . 255
.......................
Emissions Controls . 256
.....................
The Clean Air Act . 256
Crankcase Emissions Control
....................................
System . 256
Evaporative Emissions Control ....................................
System . 256
Onboard Ref ueling Vapor ................................
Recovery . 256
...
Exhaust Emissions Controls . 257
....................
PGM-FI System . 257
Ignition Timing Control
................................
System . 257
Three Way Catalytic
...........................
Converter . 257
....................
Replacement Parts . 257
..
Three Way Catalytic Converter . 258
..............
State Emissions Testing . 259
....
Testing of Readiness Codes . 259
T echnical Inf ormat ion
T echnical Inf ormation 247

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Specif ications
T echnical Inf ormation
250 Dimensions
Weights
Engine
Capacities
67.1 in (1,705 mm)
54.1 in (1,375 mm)
101.2 in (2,570 mm)
57.8 in (1,468 mm)
57.8 in (1,468 mm)
3.39 x 3.39 in (86.0 x 86.0 mm) 121.9 cu-in (1,998 cm
)
9.8 : 1 13.2 US gal (50
)
1.32 US gal (5.0
)
164.2 in (4,170 mm)
Length
Width
Height
Wheelbase
Track
Gross vehicle weight ratingType
BorexStroke
Displacement
Compression ratio
Spark plugs See the certification label attached
to the driver’s doorjamb. Fuel tank
Engine
coolant
Engine oil Manual
transmission
fluid
Windshield
washer reservoir1.77 US gal (6.7
)
4.4 US qt (4.2
)
4.2 US qt (4.0)
5.6 US qt (5.3)
1.6 US qt (1.5)
1.8 US qt (1.7)
2.6 US qt (2.5
)
0.13 US gal (0.5
)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity:
Water cooled 4-stroke DOHC
i-VTEC 4-cylinder gasoline engine 5.8 US qt (5.5
)
See spark plug maintenance
section page 183 .
FrontRear
Approx.
Change Manual
Total Manual
Change
Without filter
Total
ChangeTotal
1: 2: 3: On the U.S. model
On Canadian model 1
23
Including filter

Some conventional gasolines are
being blended with alcohol or an
ether compound. These gasolines
are collectively ref erred to as
oxygenated f uels. To meet clean air
standards, some areas of the United
States and Canada use oxygenated
f uels to help reduce emissions.
If you use an oxygenated f uel, be
sure it is unleaded and meets the
minimum octane rating requirement.
Bef ore using an oxygenated f uel, try
to conf irm the f uel’s contents. Some
states/provinces require this
informationtobepostedonthepump.If you notice any undesirable
operating symptoms, try another
service station or switch to another
brand of gasoline.
Fuel system damage or perf ormance
problems resulting f rom the use of
an oxygenated f uel containing more
than the percentages of oxygenates
given above are not covered under
warranty.
(Methyl Tertiary Butyl
Ether)
You may use gasoline containing up
to 15 percent MTBE by volume. (ethyl or grain alcohol)
You may use gasoline containing up
to 10 percent ethanol by volume.
Gasoline containing ethanol may be
marketed under the name ‘‘Gasohol.’’
The f ollowing are the U.S. EPA and
Canadian CGSB approved
percentages of oxygenates:
(methyl or wood
alcohol)
Your car was not designed to use
fuel that contains methanol.
Methanol can corrode metal parts in
the fuel system, and also damage
plastic and rubber components. This
damage would not be covered by
your warranties.
Oxygenated Fuels
T echnical Inf ormation MT BE
ET HA NOL
MET HA NOL
254

If you are planning to take your
Honda outside the U.S. or Canada,
contact the tourist bureaus in the
areas you will be traveling in to f ind
out about the availability of unleaded
gasoline with the proper octane
rating.
If unleaded gasoline is not available,
be aware that using leaded gasoline
in your Honda will af f ect perf or-
mance and fuel mileage, and damage
its emissions controls. It will no
longer comply with U.S. and
Canadian emissions regulations, and
will be illegal to operate in North
America. To bring your car back into
compliance will require the replace-
ment of several components, such as
theoxygensensorsandthethree
way catalytic converter. These re-
placements are not covered under
warranty.
Driving in Foreign Countries
T echnical Inf ormation255

The exhaust emissions controls
include three systems: PGM-FI,
Ignition Timing Control and Three
Way Catalytic Converter. These
three systems work together to
control the engine’s combustion and
minimize the amount of HC, CO, and
NOx that comes out the tailpipe. The
exhaust emissions control systems
are separate from the crankcase and
evaporative emissions control
systems.The emissions control systems are
covered by warranties separate f rom
the rest of your car. Read your
warranty manual f or more inf orma-
tion.
The PGM-FI System uses sequential
multiport f uel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Engine Control Module (ECM)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
f uel to inject under all operating
conditions.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO and NOx produced.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), dinitrogen
(N ), and water vapor. The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
genuine Honda replacement parts or
their equivalent f or repairs. Using
lower quality parts may increase the
emissions f rom your car.
2
2
Exhaust Emissions Controls
Replacement Parts
PGM-FI Syst em
Ignit ion T iming Cont rol Syst emThree Way Catalytic Converter
Emissions Cont rols
T echnical Inf ormation 257