2003 HONDA CIVIC HYBRID Cooling

To replace it: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.
The dust and pollen f ilter is located
behind the glove box.
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.
Dust and Pollen Filter
Maint enance
Replacement
222
HOOKS
COVER
TAB

The reading on your car’s
temperature gauge should stay in
the midrange under most conditions.
Itmaygohigherif youaredrivingup
a long steep hill on a very hot day. If
it climbs to the red mark, you should
determine the reason.Your car can overheat f or several
reasons, such as lack of coolant or a
mechanical problem. The only
indication may be the temperature
gauge climbing to or above the red
mark. Or you may see steam or
spray coming f rom under the hood.
In either case, you should take
immediate action. 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.
1.
2.
T aking Care of t he Unexpect ed
If Your Engine Overheats
268
Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out.
Driving with the temperature gauge
reading at the red mark can cause
serious damage to your engine.

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.
9.
10. 11.
12.
282
T aking Care of t he Unexpect ed
If Your Engine Overheats
Emergency
Towing
270

µµ
No.Circuits Protected
Amps.
Circuits Protected
Amps.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 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
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
15 A
20 A
15 A
60 A
80 A
50 A
Cooling Fan
20 A1
21 257.5A 30A
T aking Care of t he Unexpect ed
Fuses
280
UNDER-HOOD AND SECONDARY FUSE BOXES

µµ
Î Î
Î
Î
Î
No. Amps. No.
Circuits Protected Amps. Circuits Protected
1
2
3
4
5
15 A
20 A
(10 A) 10 A 6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Ignition Coil IN
LAF Heater
(Daytime running lights )
FI-ECU
Not Used 7.5 A
7.5 A
15 A
7.5 A
7.5 A
(7.5 A) 10 A
10 A
(10 A) 7.5 A 15 A
15 A
7.5 A 20 A
7.5 A 20 A
20 A
20 A
20 A
7.5 A Power Window Relay
Not Used
Accessory, Radio
Ignition Coil EX
Meter
ABS
(Daytime running lights )
SRS
Remote Control Mirrors
(SCTY )
IMA
Fuel Pump
Accessory Power Socket
Turn Signal Lights
Front Wiper
STS (Steering Switch)
Front Right Power Window
Front Left Power Window
Rear Lef t Power Window
Rear Right Power Window
Cooling Fan Relay
1 : On Canadian models
2 : Optional Security System
1
2
Fuses
T aking Care of t he Unexpect ed281
INTERIOR FUSE BOX

.............
Halogen Headlight Bulbs . 234..............
Hazard Warning Flashers . 80
Headlights ........................................
Aiming .234
............
Daytime Running Lights . 76
..................
High Beam Indicator . 64
........................
Reminder Beeper .75
........
Replacing Halogen Bulbs . 234
...................................
Turning on .75
..............................
Head Restraints .96
.....................
Heating and Cooling .108
.............
High Altitude, Starting at . 161
.................
High-Low Beam Switch . 75
..............
High-mount Brake Light . 238
....................................
Hood Latch .212
.......................
Hood, Opening the .146
..................................................
Horn .74
...........................
Hydraulic Clutch .210
.................................
Hydroplaning .179
...
Identif ication Number, Vehicle . 286
Ignition ..............................................
Keys .83
...........................................
Switch .86
............
Timing Control System . 295
5-speed Manual Transmission
...............
Checking Fluid Level . 208
................................
Shif ting the .162
.............
Flashers, Hazard Warning . 80
...................
Flat Tire, Changing a . 257
Fluids Automatic Transmission .....................................
(CVT) .206
..........................................
Brake .209
.........................................
Clutch .210
..............
Manual Transmission . 208
..................
Windshield Washer . 205
FM Stereo Radio ...................................
Reception .125
.....
Foreign Countries, Driving in . 293
..........................
Four-way Flashers .80
............................
Front Airbags .10, 48
.................................................
Fuel .144
......................
Fill Door and Cap .145
...........................................
Gauge .71
................
Octane Requirement . 144
...............................
Oxygenated .292
........................
Reserve Indicator .65
........................
Tank, Filling the .145
.....................
Fuses, Checking the .276 ...............
Gas Mileage, Improving . 150
..........................................
Gasohol .292
.........................................
Gasoline .144
...............
Fuel Reserve Indicator . 65
...........................................
Gauge .71
................
Octane Requirement . 144
........................
Tank, Filling the .145
................
Gas Station Procedures . 145
Gauges ...
Engine Coolant Temperature . 71
...............................................
Fuel .71
...............................
Speedometer .69
.................................
Tachometer .69
Gearshif t Lever Positions Automatic Transmission .....................................
(CVT) .167
5-speed Manual .........................
Transmission .162
..............................
Glass Cleaning .251
......................................
Glove Box .101
Index
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