2004 HONDA CIVIC HYBRID ECU

Make sure all windows, mirrors,
and outside lights are clean and
unobstructed. Remove f rost, snow,
or ice.
Check that the hood and trunk are
f ully closed.
Visually check the tires. If a tire
looks low, use a gauge to check its
pressure.Check that any items you may be
carrying are stored properly or
f astened down securely.
Check the seat adjustment (see
page ).
Check the adjustment of the
inside and outside mirrors (see
page ).
Check the steering wheel
adjustment (see page ).
Make sure the doors are securely
closed and locked.Fasten your seat belt. Check that
your passengers have f astened
their seat belts (see page ).
When you start the engine, check
the gauges and indicator lights in
the instrument panel (see page
).
Youshoulddothefollowingchecks
and adjustments every day bef ore
you drive your vehicle.
1.
2.
3. 4.
9.
8. 7. 6. 5. 14
69 51
77
81
Preparing to Drive
Driving128

Unscrew and remove the engine oil
fill cap on top of the valve cover.
Pour in the oil slowly and caref ully so
you do not spill. Clean up any spills
immediately. Spilled oil could
damage components in the engine
compartment. Install the engine oil
f ill cap and tighten it securely. Wait a
f ew minutes and recheck the oil level.
Do not f ill above the upper mark; you
could damage the engine.The oil viscosity or weight is
provided on the container’s label.
A very low-viscosity, f uel-ef f icient
0W-20 oil is the pref erred engine
lubricant f or your Civic Hybrid. This
special oil is f ormulated to help your
engine use less fuel. It is available at
your Honda dealer. A 5W-20 oil may
be used if 0W-20 is not available.
Oil is a major contributor to your
engine’s perf ormance and longevity.
Always use a premium-grade 0W-20
detergent oil displaying the API
Certif ication Seal. This seal indicates
the oil is energy conserving, and that
it meets the American Petroleum
Institute’s latest requirements.
Honda Motor Oil is the pref erred
0W-20 lubricant f or your vehicle. It is
highly recommended that you use
Honda Motor Oil in your vehicle f or optimum engine protection. Make
sure the API Certif ication Seal says
‘‘For Gasoline Engines’’.
A dding Engine Oil
Maint enance
Recommended Engine Oil
152
API CERTIFICATION SEAL
ENGINE OIL
FILL CAP
Ambient Temperature

If Honda antif reeze/coolant is not
available, you may use another
major-brand non-silicate coolant as a
temporaryreplacement.Makesureit
is a high-quality coolant
recommended f or aluminum engines.
Continued use of any non-Honda
coolant can result in corrosion,
causing the cooling system to
malf unction or f ail. Have the cooling
system f lushed and ref illed with
Honda antif reeze/coolant as soon as
possible.
If the coolant level in the reserve
tank is at or below the MIN line, add
coolant to bring it up to the MAX line.
Inspect the cooling system f or leaks.
Always use Honda All Season
Antif reeze/Coolant Type 2. This
coolant is pre-mixed with 50 percent
antif reeze and 50 percent water.
Never add straight antifreeze or
plain water.
Turn of f the engine, let it sit f or
several minutes, then check the oil
level on the dipstick. If necessary,
add more oil.
Put the under-cover back in place
and reinstall the nine holding clips.
Locktheclipssecurelybypushing
on the center of each clip.
11.
12.
CONT INUED
Maint enance
A dding Engine Coolant
Changing the Oil and Filter, Engine Coolant
155
NOTICE:
RESERVE TANK
Improper disposal of engine
oil can be harmf ul to the environment.
If you change your own oil, please
dispose of the used oil properly. Put it
in a sealed container and take it to a
recycling center. Do not discard it in a
trash bin or dump it on the ground.

Always use Honda ATF-Z1
(Automatic Transmission Fluid). If
it’s not available, you may use a
DEXRON
III automatic
transmission f luid as a temporary
replacement. However, continued
use can af f ect the shif t quality.
Have the transmission flushed and
ref illed with Honda ATF-Z1 as
soon as it is convenient.
Insert the dipstick all the way back
in the transmission.
The transmission should be drained
and ref illed with new f luid according
to the time and distance recommen-
dations in the maintenance schedule. To thoroughly f lush the
transmission, the technician
should drain and ref ill it with
Honda ATF-Z1, then drive the
vehicle f or a short distance. Do
this three times. Then drain and
ref ill the transmission a f inal time.
Remove the dipstick (yellow loop)
f rom the transmission, and wipe it
with a clean cloth.
Check the f luid level with the engine
at normal operating temperature.
Remove the dipstick and check
the f luid level. It should be
between the upper and lower
marks within the HOT range.
Park the vehicle on level ground.
Shut of f the engine.
Insert the dipstick all the way into
the transmission securely. If the level is below the lower
mark, add f luid into the f iller hole
to bring it to the level between the
upperandlowermarks.
3. 4.
5.
1.
2.
6.
Automatic Transmission Fluid
Maint enance
Continuously Variable
T ransmission (CVT )
158
DIPSTICK UPPER
MARK
LOWER
MARK
HOT
Range

Check the f luid level with the
transmission at normal operating
temperature and the vehicle sitting
on level ground. Remove the under-
cover to access the transmission
housing(seepage ).Removethe
transmission f iller bolt and caref ully
f eel inside the bolt hole with your
f inger. The f luid level should be up
to the edge of the bolt hole. If it is
not, add Honda Manual Transmis-
sion Fluid (MTF) until it starts torun out of the hole. Reinstall the
f iller bolt and tighten it securely.
If Honda MTF is not available, you
may use an SAE 10W-30 or 10W-40
viscosity motor oil with the API
Certif ication seal that says ‘‘FOR
GASOLINE ENGINES’’ as a
temporary replacement. However,
motor oil does not contain the proper
additives, and continued use can
cause stiffer shifting. Replace as
soon as it is convenient.
The transmission should be drained
and ref illed with new f luid according
to the time and distance recommen-
dations in the maintenance schedule.
153
Maint enance
5-speed Manual Transmission
Manual T ransmission Fluid
159
Correct Level FILLER BOLT

Put on the spare tire. Put the
wheel nuts back on f inger-tight,
then tighten them in a crisscross
pattern with the wheel wrench
until the wheel is f irmly against
the hub. Do not try to tighten
them f ully.
Lower the vehicle to the ground
and remove the jack.Tighten the wheel nuts securely in
the same crisscross pattern. Have
the wheel nut torque checked at
the nearest automotive service
f acility.
Tighten the wheel nuts to:
Remove the center cap before
storing the f lat tire in the trunk
well.Place the flat tire face down in the
spare tire well.
Remove the spacer cone f rom the
wing bolt, turn it over, and put it
back on the bolt.
Secure the f lat tire by screwing
the wing bolt back into its hole.
12.
13. 14.
15.16.
17.
18.
Changing a Flat T ire
T aking Care of t he Unexpect ed182
WING BOLT
SPACER
CONE
80 lbf·ft (108 N·m , 11 kgf·m)

Store the jack in the trunk with the
end bracket on the lef t side. Turn
the jack’s end bracket to lock it in
place. Store the tool kit.
Store the wheel cover or center
cap in the trunk. Make sure it does
not get scratched or damaged.
Lower the trunk f loor and trunk
floor mat, then close the trunk lid.
19.
20.
21.
Changing a Flat T ire
T aking Care of t he Unexpect ed183
Loose items can fly around the
interior in a crash and could
seriously injure the occupants.
Store the wheel, jack, and tools
securely before driving.

µµ
No. Amps. Circuits ProtectedNo. Amps. Circuits Protected
1 20 A Cooling Fan 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 20 A
10 A
10 A
20 A
10 A
15 A
15 A
20 A
10 A
40 A
30 A
40 A
40 A
40 A
20 A
20 A
20 A
60 A
80 A
50 A Condenser Fan
IMA
Small Light
Cooling Fan
Hazard
FI ECU
Horn, Stop
ABS F/S
Back Up
ABS Motor
Rear Defroster
Heater Motor
Power Window
Option
Lef t Headlight
Door Lock
Right Headlight
EPS
Battery
Ignition 1
Spare Fuses
21 257.5A 30A
T aking Care of t he Unexpect ed
Fuse Locations
197
UNDER-HOOD AND SECONDARY FUSE BOXES