catalytic converter HONDA CIVIC SEDAN 2007 Owner's Manual (in English)

Each trip meter works independently,
so you can keep track of two
different distances.
There
are two trip meters: TRIP A
and TRIP B. Switch between these
displays by pressing the SEL/
RESET button repeatedly. This
shows how much fuel you have.
It may show slightly more or less
th an the actual amount.
To reset a trip meter, display it, and
then press and hold the SEL/RESET
button until the number resets to
‘‘0.0.’’ This meter shows the number of
miles or kilometers driven since you
last reset it. This
shows the temperature of the
engine’s coolant. During normal
operation, the reading should rise to
about the middle of the gauge. In
severe driving conditions, such as
very hot weather or a long period of
uphill driving, the reading may rise
into the upper half of the gauge. If it
reaches the red (Hot) mark, pull
safely to the side of the road. See
page f or instructions and
precautions on checking the engine
cooling system. 265
Trip Meter
Fuel GaugeTemperature Gauge
Gauges
Inst rument s and Cont rols
67
Avoid driving with an extremely low
f uel level. Running out of f uel could
cause the engine to misf ire, damaging
the catalytic converter.

If your vehicle has an automatic
transmission, set the parking brake
bef ore you put the transmission in
Park. This keeps the vehicle f rom
moving and putting pressure on the
parking mechanism in the
transmission.Make sure the moonroof (if
equipped) and the windows are
closed.
Place any packages, valuables, etc.,
in the trunk or take them with you. Turn of f the lights.
If the vehicle is f acing uphill, turn
the front wheels away from the
curb. If you have a manual
transmission, put it in f irst gear.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb. If you have a manual
transmission, put it in reverse gear.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes.
Lock the doors.
Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly, or
your vehicle may roll if it is parked
on an incline.
Check the indicator on the
instrument panel to verif y that the
security system is set.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.
On vehicles with security system
Parking T ips
Parking
198
Never install a sunshade between the
upper and lower meters on the
instrument panel. If you do, you could
cause heat damage to the upper meter
on a very hot day.

Thediagramsinthissectiongive
you the dimensions and capacities of
your vehicle and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems.................
Identif ication Numbers .280
................................
Specif ications .282
DOT Tire Quality Grading
......................
(U.S. Vehicles) .284
.................................
Treadwear .284
......................................
Traction .284
.............................
Temperature .285
.................................
Tire Labeling .286 .......................
Emissions Controls .287
.....................
The Clean Air Act .287
Crankcase Emissions Control
....................................
System .287
Evaporative Emissions Control ....................................
System .287
Onboard Ref ueling Vapor ................................
Recovery .287
...
Exhaust Emissions Controls .288
....................
PGM-FI System .288
Ignition Timing Control
................................
System .288
Exhaust Gas Recirculation ...................
(EGR) System .288
Three Way Catalytic ...........................
Converter .288
....................
Replacement Parts .288
..
Three Way Catalytic Converter .289
..............
State Emissions Testing .290
T echnical Inf ormation
Technical Inf ormation
279

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
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.
The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our systems work
together to control the engine’s
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
The PGM-FI system uses sequential
multiport f uel injection. It has three
subsystems: air intake, engine
control, and f uel control. The
powertrain control module (PCM) in
automatic transmission vehicles or
the engine control module (ECM) in
manual transmission vehicles 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 exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manif old. Adding exhaust gas to the
air/f uel mixture reduces the amount
of NOx produced when the f uel is
burned.
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 ), nitrogen
(N ), and water vapor.
2
2
Exhaust Emissions Controls Replacement Parts
Emissions Cont rols
PGM-FI SystemIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
288

The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converter is ref erred to
as a three-way catalyst, since it acts
on HC, CO, and NOx. A replacement
unit must be an original Honda part
or its equivalent.
The three way catalytic converter
must operate at a high temperaturefor the chemical reactions to take
place. It can set on f ire any
combustible materials that come
near it. Park your vehicle away from
high grass, dry leaves, or other
f lammables.
A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
f ormance. Follow these guidelines to
protect your vehicle’s three way
catalytic converter. Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter inef f ective.
Keep the engine well maintained.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
Technical Inf ormation
289
THREE WAY CATALYTIC CONVERTER
THREE WAY CATALYTIC CONVERTER
Si model
DX, Canadian DX-G, LX, EX

Î
Î Î Î ÎTechnical Descriptions
....
DOT Tire Quality Grading .284
.....
Emissions Control Systems .287
.....................
Oxygenated Fuels .177
..........
State Emissions Testing .290
Three Way Catalytic
...............................
Converter .289
.................................
Tire Labeling .286
.......................
Temperature Gauge .67
.....................
Tether Anchor Points .45
............................
Thef t Protection .170
..
Three Way Catalytic Converter . 289
..........................
Time, Setting the .169
....................................
Tire Chains .251
.........
Tire, How to Change a Flat . 257
.........................
Tire Inf ormation .284
...............................................
Tires .245
..............................
Air Pressure .246
.........................
Checking Wear .247
..........................
Compact Spare .256
....
DOT Tire Quality Grading . 284
......................................
Inf lation .246
..................................
Inspection .247
..............................
Maintenance .248
...................................
Replacing .249
......................................
Rotating .248 ...........................................
Snow .250
............................
Specif ications .283
................................
Tire Chains .251
...................
Tools, Tire Changing . 257
Towing .....................................
A Trailer .204
..................
Emergency Towing . 276
...........................
Traction Devices .251
Transmission Checking Fluid Level, ..............................
Automatic .232
Checking Fluid Level, ...................................
Manual .233
..................
Fluid Selection . 232, 233
..............
Identif ication Number . 280
.............
Shif ting the Automatic . 194
..................
Shif ting the Manual . 191
...................................
Treadwear .284
.......................................
Trip Meter .67
................................................
Trunk .87
........................................
Opening .87
...................
Open Monitor Light . 62
....................................
Turn Signals .72 Unexpected, Taking Care
..........................................
of the .255
..
Unif orm Tire Quality Grading . 279
........................
Unleaded Gasoline .176
.......
Used Oil, How to Dispose of . 228
.............
WARNING, Explanation of . ii
................................
Vanity Mirror .102
.................
Vehicle Capacity Load . 185
......................
Vehicle Dimensions .282
....
Vehicle Identif ication Number . 280
.............................
Vehicle Storage .254
.................................................
VIN .280
..................................
Viscosity, Oil .225
Vehicle Stability Assist ............................
(VSA) System .202
............
Ac tivation Indicator . 62, 202
..................................
Of f Switch .203
.................
System Indicator . 62, 203
Index
U
V
W
VIII