2003 HONDA CIVIC COUPE cooling

Tightening torque:
When the coolant stops draining,
tightenthedrainpluginthe
bottom of the radiator. Apply non-
hardening sealant to the drain bolt
threads, put a new washer on the
drain bolt, and reinstall the drain
bolt in the engine block. Tighten it
securely.
Pour Honda All Season
Antif reeze/Coolant Type 2 into
the radiator up to the base of the
f iller neck. This coolant is a
mixture of 50 percent antif reeze
and 50 percent water. Pre-mixing
is not required.The cooling system capacity is:
10.
11.
CONT INUED
With 5-speed manual transmission:With automatic transmission:With automatic transmission (CVT):
Cooling Syst em
Maint enance211
Fill up to here
FILLER NECK
58 lbf·ft (78 N·m , 8.0 kgf·m)
1.03 US gal (3.9
)
1.00 US gal (3.8
)
1.00 US gal (3.8
)
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Start the engine and hold it at
1,500 rpm until the radiator f an
comes on. Turn of f the engine.
Check the coolant level in the
radiator and add coolant if needed.
Install the radiator cap, and
tighten it fully.
If necessary, f ill the reserve tank
to the MAX mark. Install the
reserve tank cap.
Start the engine and let it run until
the radiator fan comes on two
times. Then stop the engine.
Remove the radiator cap. Fill the
radiator with coolant up to the
base of the f iller neck.
Start the engine and let it run f or
about 30 seconds. Then turn of f
the engine.
Check the level in the radiator,
add coolant if needed.
Fill the reserve tank to the MAX
mark. Install the reserve tank cap.
Install the radiator cap, and
tighten it to the first stop.
16. 17. 18.
19. 20.
12.
13.
14. 15.
Cooling Syst em
Maint enance212
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Periodically check the engine’s
radiator and air conditioning
condenser f or leaves, insects, and
dirt stuck to the f ront surf ace. These
block the air f low and reduce cooling
ef f iciency. Use a light spray f rom a
hose or a sof t brush to remove them.If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the
system with Ref rigerant HFC-134a
(R-134a). (See Specif ications on page
.)
Run the air conditioning at least once
a week during the cold weather
months. Run it f or at least ten
minutes while you are driving at a
steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the ref rigerant.
Your car’s air conditioning is a sealed
system. Any major maintenance,
such as recharging, should be done
by a qualif ied mechanic. You can do
a couple of things to make sure the
air conditioning works ef f iciently.
289Standard f or LX and EX models in the
U.S.,andLXandSimodelsinCanadaOptional f or other models
A ir Condit ioning Syst em
Maint enance228
AIR CONDITIONING CONDENSER
Whenever you have the air conditioning
system serviced, make sure the service
f acility uses a ref rigerant recycling
system. This system captures the
ref rigerant f or reuse. Releasing
ref rigerant into the atmosphere can
damage the environment.
The condenser and radiator f ins bend
easily. Only use a low-pressure spray
or sof t-bristle brush to clean them.
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To replace it:
The air conditioning f ilter is located
behind the glove box.
Open the glove box. Remove the
hooks on the side panels by pulling
out on the tabs. Pivot the glove
box out of the way. Remove the dust and pollen f ilter
cover by pushing in on the lock tab,
then pulling the cover toward you.
The dust and pollen f ilter removes
pollen and dust that is brought in
f rom the outside through the heating
andcoolingsystem.
This f ilter should be replaced every
30,000 miles (48,000 km) under
normal conditions. It should be
replaced every 15,000 miles (24,000
km) if you drive primarily in urban
areas that have high concentrations
of soot in the air f rom industry and
diesel-powered vehicles. Replace it
more of ten if air f low f rom the
heating and cooling system becomes
less than usual.
1.2.
CONT INUED
Standard f or LX and EX models in the
U.S.,and LXandSimodelsinCanadaOptional f or other models
Maint enance
Replacement
Dust and Pollen Filter
229
HOOKS COVER
TAB
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Saf ely pull to the side of the road.
Put the transmission in Neutral or
Park, and set the parking brake.
Turn of f the heating and cooling
system and all other accessories.
Turn on the hazard warning
indicators.
If you see steam and/or spray
coming f rom under the hood, turn
of f the engine.If you do not see steam or spray,
leave the engine running and
watch the temperature gauge. If
the high heat is due to overloading
(climbing a long, steep hill on a
hot day with the A/C running, f or
example), the engine should start
to cool down almost immediately.
If it does, wait until the tempera-
ture gauge comes down to the mid-
point then continue driving.
If the temperature gauge stays at
the red mark, turn of f the engine.
Wait until you see no more signs
of steam or spray, then open thehood.Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (see
on page ).
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank (see page ). If the level is below the
MIN mark, add coolant to halfway
between the MIN and MAX marks.
1. 2.
3. 4. 5.6. 7.
161 283
Emergency
Towing
If Your Engine Overheats
T aking Care of t he Unexpect ed270
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If there was no coolant in the
reserve tank, you may also have to
add coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, bef ore check-
ing the radiator.Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. This
releases any remaining pressure in
the cooling system. After the
pressure releases, push down on
the cap and turn it until it comes
off.
Start the engine and set the
temperature control dial to
maximum. Add coolant to the
radiator up to the base of the f iller
neck. If you do not have the
proper coolant mixture available,
you can add plain water.
Remember to have the cooling
system drained and ref illed with
the proper mixture as soon as you
can.Put the radiator cap back on
tightly. Run the engine and watch
the temperature gauge. If it goes
back to the red mark, the engine
needs repair. (See
on page .)
If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.
8.
9.
10. 11. 12.
283
Emergency
Towing
If Your Engine Overheats
T aking Care of t he Unexpect ed271
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
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µ
µ
µ
No.
CONT INUED
Amps. Circuits Protected
1 23456789
1011121314151617181920 20 A
15 A
7.5 A 20 A
10 A
15 A
15 A
20 A
10 A
40 A
40 A
40 A
40 A
40 A
15 A
20 A
15 A
80 A
40 A Condenser Fan
Small Lights
Interior Light
Cooling Fan
Hazard, Turn Signals
FI ECU
Horn, Brake Light
ABS F/S
Back Up
ABS Motor
Rear Defroster
Heater Motor
Power Window
Option
Lef t Headlight
Door Lock
Right Headlight
Not Used
Battery
Ignition 1
Spare Fuses
21 257.5 A 30 A
Fuses
T aking Care of t he Unexpect ed281
UNDER-HOOD FUSE BOX
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.....................
Fuses, Checking the . 279
........................
Jacking up the Car . 259
.......................................
Jack, Tire . 259
................................
Jump Starting . 267
...............
Gas Mileage, Improving . 162
..........................................
Gasohol . 292
.........................................
Gasoline . 156
...............
Fuel Reserve Indicator . 66
...........................................
Gauge . 70
................
Octane Requirement . 156
........................
Tank, Filling the . 157
................
Gas Station Procedures . 157
Gauges
...
Engine Coolant Temperature . 71
...............................................
Fuel . 70
...............................
Speedometer . 69
.................................
Tachometer . 69
Gearshif t Lever Positions ..........
Automatic Transmission . 174
5-speed Manual
.........................
Transmission . 172
..............................
Glass Cleaning . 254
......................................
Glove Box . 101 .............
Halogen Headlight Bulbs . 241
..............
Hazard Warning Flashers . 78
Headlights
............
Daytime Running Lights . 74
..................
High Beam Indicator . 66
........................
Reminder Beeper . 73
........
Replacing Halogen Bulbs . 241
...................................
Turning on . 73
..............................
Head Restraints . 92
.....................
Heating and Cooling . 110
.............
High Altitude, Starting at . 171
.................
High-Low Beam Switch . 73
..............
High-mount Brake Light . 245
....................................
Hood Latch . 220
.......................
Hood, Opening the . 158
..................................................
Horn . 72
...........................
Hydraulic Clutch . 217
.................................
Hydroplaning . 188
...
Identif ication Number, Vehicle . 286
Ignition
..............................................
Keys . 80 ...........................................
Switch . 82
............
Timing Control System . 295
.........
Important Safety Precautions . 6
Indicators, Instrument
.............................................
Panel . 61
...............................
Inf ant Restraint . 30
Inf ant Seats
...........................
Lower Anchors . 42
..........
Tether Anchorage Points . 41
...................
Inf lation, Proper Tire . 232
.........................
Normal Driving . 233
...................................
Inside Mirror . 99
.............................
Inspection, Tire . 234
........................
Instrument Panel . 2, 58
........
Instrument Panel Brightness . 74
...........................
Interior Cleaning . 252
...............................
Interior Lights . 105
........................................
Introduction . i
Index
G H I J
IV
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