Evaporative system HONDA CIVIC SEDAN 2007 Owner's Manual (in English)

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If equipped
The temperature sensor is in the
f ront bumper. Theref ore, the
temperature reading can be af f ected
by heat ref lection f rom the road
surf ace, engine heat, and the
exhaust f rom surrounding traf f ic.
This can cause an incorrect
temperature reading when your
speed is under 19 mph (30 km/h).
The sensor delays the display update
until it reaches the correct outside
temperature. This may take several
minutes. If the outside temperature is
incorrectly displayed, you can adjust
it up to 5°F ( 3°C) warmer or
cooler.
NOTE: The temperature must be
stabilized bef ore doing this
procedure.
This indicator displays the outside
temperature in Fahrenheit (U.S.
models) or Centigrade (Canadian
models). To see the outside
temperature, press and release the
SEL/RESET button until the
temperature is shown on the
inf ormation display. Select the outside temperature
display, then press the SEL/RESET
button f or 10 seconds. The f ollowing
sequence will appear f or 1 second
each:0,1,2,3,4,5, 5, 4, 3, 2,1,0(U.S.)or0,1,2,3, 3, 2,
1, 0 (Canada).
When it reaches the desired value,
release the SEL/RESET button. You
should see the new outside
temperature displayed.
In certain weather conditions,
temperature readings near f reezing
(32°F, 0°C) could mean that ice is
f orming on the road surf ace. Your vehicle’s on board diagnostic
system will detect a loose or missing
f uel f ill cap as an evaporative system
leak. The f irst time a leak is detected
a ‘‘CHECK FUEL CAP’’ message
appears on the information display.
Turn the engine of f , and conf irm the
f uel f ill cap is installed. If it is, loosen
it, then retighten it until it clicks at
least once. The message should go
off after several days of normal
driving once you tighten or replace
the f uel f ill cap. To scroll to another
display, press the SEL/RESET
button. The ‘‘CHECK FUEL CAP’’
message will appear each time you
restart the engine until the system
turns the message of f .
Outside Temperature Indicator Check Fuel Cap Message
Gauges
68

The information display in the
instrument panel shows you the
engine oil life and maintenance
service items when the ignition
switch is in the ON (II) position. This
information helps to keep you aware
of the periodic maintenance your
vehicle needs for continued trouble-
free driving. Refer to page for
more information.
If
the system still detects a leak in
your vehicle’s evaporative emissions
system, the malfunction indicator
lamp (MIL) comes on. If the fuel fill
cap was not already tightened, turn
the engine off, and check or
retighten the fuel fill cap until it
clicks at least once. The MIL should
go off after several days of normal
driving once the cap is tightened or
replaced. If the MIL does not go off,
have your vehicle inspected by a
dealer. For more information, see
page . 213
268 Maintenance Minder
Gauges
Inst rument s and Cont rols
69

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

Î
ÎThe burning of gasoline in your
vehicle’s engine produces several by-
products. Some of these are carbon
monoxide (CO), oxides of nitrogen
(NOx), and hydrocarbons (HC).
Gasoline evaporating f rom the tank
also produces hydrocarbons. Con-
trolling the production of NOx, CO,
and HC is important to the environ-
ment. Under certain conditions of
sunlight and climate, NOx and HC
react to f orm photochemical ‘‘smog.’’
Carbon monoxide does not contri-
bute to smog creation, but it is a
poisonous gas. The United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
In Canada, Honda vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
Your vehicle has a positive
crankcase ventilation system. This
keeps gasses that build up in the
engine’s crankcase f rom going into
the atmosphere. The positive
crankcase ventilation valve routes
them from the crankcase back to the intake manif old. They are then
drawn into the engine and burned.
The onboard ref ueling vapor
recovery (ORVR) system captures
the f uel vapors during ref ueling. The
vapors are adsorbed in a canister
f illed with activated carbon. While
driving, the f uel vapors are drawn
into the engine and burned of f . As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
The Clean Air Act
Crankcase Emissions Control
System
Onboard Ref ueling Vapor
Recovery Evaporative Emissions Control
System
Emissions Cont rols
Technical Inf ormation
287

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

Î
CONT INUED
Doors.
Auto Door Locking/Unlocking .81
.....................
Auto Door Locking .81
.................
Auto Door Unlocking .82
..............
Locking and Unlocking .79
......................
Power Door Locks .80
........
DOT Tire Quality Grading .284
Downshif ting, Manual
.............................
Transmission .191
...........
Driver and Passenger Safety .5
...........................................
Driving .187
....................................
Economy .181
..................
Dust and Pollen Filter .242
..............................
Economy, Fuel .181
............
Emergencies on the Road .255
.............
Battery, Jump Starting .263
...........
Brake System Indicator .269
................
Changing a Flat Tire .257
.....
Charging System Indicator .267
..................
Checking the Fuses .270
.....
Low Oil Pressure Indicator .267
...
Malf unction Indicator Lamp .268
..................
Overheated Engine .265 .........................
Emergency Brake .100
......................
Emergency Flashers .74
......................
Emergency Towing .276
............
Emergency Trunk Opener .87
.......................
Emissions Controls .287
.............
Emissions Testing, State .290
Engine
....
Coolant Temperature Gauge .67
......
Engine Speed Limiter . 193, 196
Malf unction Indicator ......................................
Lamp .268
........
Oil Pressure Indicator . 65, 267
..............
Oil, What Kind to Use .224
...............................
Overheating .265
............................
Specif ications .282
.......................................
Starting .190
......................
Ethanol in Gasoline .177
.
Evaporative Emissions Controls .287
...............................
Exhaust Fumes .51
Expectant Mothers, Use of Seat
........................................
Belts by .16
...................................
Fan, Interior .106
.........................................
Features .105 ....................
Filling the Fuel Tank .177
Filters
.........................
Dust and Pollen .242
...............................................
Oil .226
5-speed Manual Transmission ...............
Checking Fluid Level .233
................................
Shif ting the .191
.............
Flashers, Hazard Warning .74
...................
Flat Tire, Changing a .257
Fluids
..........
Automatic Transmission .232
..........................................
Brake .234
.........................................
Clutch .235
...................................
Locations .222
..............
Manual Transmission .233
..........................
Power Steering .235
..................
Windshield Washer .231
FM Stereo Radio ...................................
Reception .163
...........................
Folding Rear Seat .93
..........................
Four-way Flashers .74
..............................
Front Airbags . 9, 24
Index
F
EINDEX
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