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
PGM-FI System Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
Technical Inf ormation
301
——y
y
(#yy
2008 Civic Sedan
If you take your vehicle f or an
emissions test shortly af ter the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘‘readiness
codes’’ that must be set in the on-
board diagnostics f or the emissions
systems. These codes are erased
when the battery is disconnected,
and set again only after several days
of driving under a variety of
conditions.Without touching the accelerator
pedal, start the engine, and let it
idle f or 20 seconds.
Make sure the vehicle has been
parked with the engine of f f or 6
hours or more.
Make sure the ambient
temperature is between 40° and
95°F.
If the testing f acility determines that
the readiness codes are not set, you
will be requested to return at a later
date to complete the test. If you must
get the vehicle retested within the
next two or three days, you can
condition the vehicle f or retesting by
doing the f ollowing.
Make sure the gas tank is nearly,
but not completely, f ull (around
3/4). Keep the vehicle in Park
(automatic transmission) or
neutral (manual transmission).
Increase the engine speed to 2,000
rpm,andholditthereuntilthe
temperature gauge rises to at least
1/4of thescale(about3minutes).
Without touching the accelerator
pedal and let the engine idle f or 20
seconds.
1.
2.
3. 4.
5.
6.
CONT INUED
T esting of Readiness Codes
Emissions T esting
Technical Inf ormation
303
——y
y
(#yy
2008 Civic Sedan
CONT INUED
...
Accessories and Modif ications .189
ACCESSORY (Ignition Key
.......................................
Position) .78
.............
Accessory Power Socket .106
..................
Active Head Restraints .94
....................
Additives, Engine Oil .233
...............................
Airbag (SRS) .9, 21
...
Airbags, Additional Information .21
...
Additional Safety Precautions .32
..........
AdvancedAirbagSystem .26
.............................
Airbag Service .31
How the Passenger Airbag Of f
......................
Indicator Works .30
How the Side Airbag Of f ......................
Indicator Works .30
..
How the SRS Indicator Works .29
How Your Front Airbags
.........................................
Work .24
...
How Your Side Airbags Work .27
How Your Side Curtain Airbags
.........................................
Work .29
........................
SRS Components .21
..............
Air Conditioning System .108
.......................
Air Pressure, Tires .255 ......................................
Antif reeze .236
Anti-lock Brakes (ABS)
...............................
Indicator .60, 208
...................................
Operation .208
..............
Anti-thef t, Audio System .173
Anti-thef t Steering Column
..............................................
Lock .78
............................................
Armrest .95
................................
Audio System .112
.....
Auto Door Locking/Unlocking .81
.........................
Auto Door Locking .81
.....................
Auto Door Unlocking .83
...
Automatic Seat Belt Tensioners .19
.............
Automatic Speed Control .176
..............
Automatic Transmission .202
..........................
Capacity, Fluid .293
...............
Checking Fluid Level .240
.......................................
Shif ting .202
Shif t Lever Position
...............................
Indicators .202
................
Shif t Lever Positions .203
....................
Shif t Lock Release .205
......................
Auxiliary Input Jack .172 Battery
Charging System ...........................
Indicator .65, 277
............................
Jump Starting .273
..............................
Maintenance .262
............................
Specif ications .294
..............................
Bef ore Driving .179
....................................
Belts,Seat .8,18
.........................
Beverage Holders .106
Brakes
...........
Anti-lock System (ABS) .208
.............
Break-in, New Linings .180
....................
Bulb Replacement .247
...........................................
Fluid .242
.................
Pad Wear Indicators .207
.......................................
Parking .103
.................
System Indicator .59, 279
.............................
Braking System .207
.................
Break-in, New Vehicle .180
..
Brightness Control, Instruments .73
........................
Brights, Headlights .72
Index
A B
INDEX
I
—
—y
y
(#y
y
2008 Civic Sedan
Î
Bulb Replacement..........................
Back-up Lights .247
..............................
Brake Lights .247
........
Front Side Marker Lights .246
.........
Front Turn Signal Lights .246
.........................
Headlights .244, 245
.........
High-mount Brake Light .249
..........................
Parking Lights .246
.........
Rear Side Marker Lights .247
..........
Rear Turn Signal Lights .247
............................
Specif ications .293
..............................
Bulbs, Halogen .244 ...............
DANGER, Explanation of .iii
...................................
Dashboard .3, 56
................
Daytime Running Lights .73
.........
Def ects, Reporting Saf ety .308
........................
Def og and Def rost .111
................
Def ogger, Rear Window .74
..............
Def rosting the Windows .111
....................................
Dimensions .292
...............
Dimming the Headlights .72
Dipstick
..........
Automatic Transmission .240
..................................
Engine Oil .183
..........................
Directional Signals .72
Disc Brake Pad Wear
...................................
Indicators .207
............................
Disc Player .124, 144
..................
Display Change Button .66
.....................
Disposal of Used Oil .236
.........................................
Card, PC .153
............................
Capacities Chart .293
.............
Carbon Monoxide Hazard .51
.............................
Carrying Cargo .191
.............
CAUTION, Explanation of . iii
..............................
CD Player .124, 144
..................................
Ceiling Light .104
........................
Certif ication Label .290
............................................
Chains .261
....................
Changing a Flat Tire .267 Changing Oil
........................................
How to .234
......................................
When to .223
...
Charging System Indicator .65, 277
..............
Check Fuel Cap Message .68
............
Checklist, Bef ore Driving .197
.....................................
Child Saf ety .33
Child Seats
.............
LATCH Anchor System .42
...........................
Lower Anchors .42
................
Tether Anchor Points .45
..................
Childproof Door Locks .80
.........................
Clock, Setting the .174
...................................
Clutch Fluid .243
........................
CO in the Exhaust .300
............
Cold Weather, Starting in .198
..............................
Compact Spare .266
.................
Console Compartment .106
.................
Consumer Inf ormation .306
.............
Controls, Instruments and .55
Coolant
........................................
Adding .236
....................................
Checking .185
.........................
Proper Solution .236
...................
Temperature Gauge .67 Crankcase Emissions Control
........................................
System .300
............
Cruise Control Operation .176
....
Customer Service Inf ormation .306
Index
C D
II
—
—y
y
(#y
y
2008 Civic Sedan
Î
CONT INUED
Doors.
Auto Door Locking/Unlocking .81
.....................
Auto Door Locking .81
.................
Auto Door Unlocking .83
..............
Locking and Unlocking .79
......................
Power Door Locks .80
........
DOT Tire Quality Grading .295
Downshif ting, Manual
.............................
Transmission .199
...........
Driver and Passenger Safety .5
...........................................
Driving .195
....................................
Economy .186
..................................
Guidelines .196
..................
Dust and Pollen Filter .250
..............................
Economy, Fuel .186
............
Emergencies on the Road .265
.............
Battery, Jump Starting .273
...........
Brake System Indicator .279
................
Changing a Flat Tire .267
.....
Charging System Indicator .277
..................
Checking the Fuses .280
.....
Low Oil Pressure Indicator .277
...
Malf unction Indicator Lamp .278 ..................
Overheated Engine .275
.........................
Emergency Brake .103
......................
Emergency Flashers .74
......................
Emergency Towing .286
............
Emergency Trunk Opener .87
.......................
Emissions Controls .300
........................
Emissions Testing .303
Engine
....
Coolant Temperature Gauge .67
......
Engine Speed Limiter .201, 204
Malf unction Indicator
......................................
Lamp .278
........
Oil Pressure Indicator .65, 277
..............
Oil, What Kind to Use .232
...............................
Overheating .275
............................
Specif ications .292
.......................................
Starting .198
......................
Ethanol in Gasoline .181
.
Evaporative Emissions Controls .300
...............................
Exhaust Fumes .51
Expectant Mothers, Use of Seat
........................................
Belts by .16
...................................
Fan, Interior .108 .........................................
Features .107
....................
Filling the Fuel Tank .181
Filters
.........................
Dust and Pollen .250
...............................................
Oil .234
5-speed Manual Transmission ...............
Checking Fluid Level .241
................................
Shif ting the .199
.............
Flashers, Hazard Warning .74
...................
Flat Tire, Changing a .267
Fluids
..........
Automatic Transmission .240
..........................................
Brake .242
.........................................
Clutch .243
...................................
Locations .230
..............
Manual Transmission .241
..........................
Power Steering .243
..................
Windshield Washer .239
FM Stereo Radio ...................................
Reception .166
...........................
Folding Rear Seat .95
..........................
Four-way Flashers .74
..............................
Front Airbags .9, 24
Index
F
E
INDEX
III
——y
y
(#y
y
2008 Civic Sedan
.................................................
Fuel .180
......................
Fill Door and Cap .181
...........................................
Gauge .67
................
Octane Requirement .180
...............................
Oxygenated .181
........................
Reserve Indicator .64
........................
Tank, Filling the .181
.....................
Fuses, Checking the .280
.................
Jacking up the Vehicle .268
.......................................
Jack, Tire .267
................................
Jump Starting .273
...............
Gas Mileage, Improving .186
.........................................
Gasoline .180
...............
Fuel Reserve Indicator .64
...........................................
Gauge .67
................
Octane Requirement .180
........................
Tank, Filling the .181
................
Gas Station Procedures .181
Gauges
...
Engine Coolant Temperature .67
...............................................
Fuel .67
Gearshif t Lever Positions ..........
Automatic Transmission .202
..............
Manual Transmission .199
......................................
Glove Box .106 .............
Halogen Headlight Bulbs .244
..............
Hazard Warning Flashers .74
Headlights
........................................
Aiming .244
............
Daytime Running Lights .73
..................
High Beam Indicator .61
........................
Reminder Beeper .72
........
Replacing Halogen Bulbs .244
...................................
Turning on .72
..............................
Head Restraints .92
.............................
Heated Mirrors .103
.....................
Heating and Cooling .108
.............
High Altitude, Starting at .198
.................
High-Low Beam Switch .72
..............
High-mount Brake Light .249
.......................
Hood, Opening the .182
..............................................
Horn .4,70
...
Identif ication Number, Vehicle .290
Ignition
..............................................
Keys .76
...........................................
Switch .78 ............
Timing Control System .301
.........
Important Safety Precautions .6
.........
Indicators, Instrument Panel .59
...............................
Inf ant Restraint .38
Inf ant Seats
.............
LATCH Anchor System .42
...........................
Lower Anchors .42
................
Tether Anchor Points .45
Inf lation, Recommended Tire ...................................
Pressures .255
........................
Inf ormation Display .66
.................................
Inside Mirror .102
.............................
Inspection, Tire .256
............................
Instrument Panel .57
................
Instrument Panel Lights .59
........
Instrument Panel Brightness .73
..............
Instruments and Controls .55
...............................
Interior Lights .104
........................................
Introduction .i
Index
H
I
G
J
IV
——y
y
(#y
y
2008 Civic Sedan
Î
CONT INUED
..................................................
Keys .76
.......................
Label, Certif ication .290
.................
Lane Change, Signaling .72
..................
Lap/Shoulder Belts .14, 19
.................
LATCH Anchor System .42
Lights
....................
Bulb Replacement .244
.......................................
Indicator .59
.........................................
Parking .72
..................................
Turn Signal .72
....................................
Load Limits .192
......
LOCK (Ignition Key Position) .78
Locks
.......
Anti-thef t Steering Column .78
............................
Fuel Fill Door .181
.................................
Power Door .80
...........................................
Trunk .86
........................
Low Coolant Level .185
.........................
Low Fuel Indicator .64
................................
Lower Anchors .42
...
Lower Gear, Downshif ting to a .199 ...
Low Oil Pressure Indicator .65, 277
Low Tire Pressure
.............................
Indicator .63, 212
...
Lubricant Specif ications Chart .293
...................
Neutral Gear Position .203
..................
New Vehicle Break-in .180
.....................
Normal Shif t Speeds .200 ...................
NOTICE, Explanation of .i
...............
Numbers, Identif ication .290
..................................
Maintenance .221
................................
Minder .223-229
.........................
Minder Indicator .65
...
Owner Maintenance Checks .228
..........................................
Saf ety .222
.......
Malf unction Indicator Lamp .278
...................
Manual Transmission .199
........
Manual Transmission Fluid .241
...............................
Meters, Gauges .66
...................
Methanol in Gasoline .181
........................
Mirrors, Adjusting .102
.......................................
Moonroof .100
...........................
MP3/WMA .125, 145 ...
Octane Requirement, Gasoline .180
.........................................
Odometer .66
...............................
Odometer, Trip .67
Oil
........................
Change, How to .234
......................
Change, When to .223
......................
Checking Engine .183
..............
Pressure Indicator .65, 277
.......
Selecting Proper Viscosity .232
...........
ON (Ignition Key Position) .78
Onboard Ref ueling Vapor
....................................
Recovery .300
............................
Outside Mirrors .102
....
Outside Temperature Indicator .68
....................
Overheating, Engine .275
....
Owner’s Maintenance Checks .228
.........................
Oxygenated Fuels .181
Index
M
N O
K
L
INDEX
V
—
—y
y
(#yy
2008 Civic Sedan
Î
Î
Î
Î
Î
Î
Î Î
Unexpected, Taking Care
..........................................
of the .265
..
Unif orm Tire Quality Grading .295
........................
Unleaded Gasoline .180
.......
Used Oil, How to Dispose of .236
Technical Descriptions
....
DOT Tire Quality Grading .295
.....
Emissions Control Systems .300
....................
Emissions Testing .303
.....................
Oxygenated Fuels .181
Three Way Catalytic
...............................
Converter .301
.................................
Tire Labeling .297
.......................
Temperature Gauge .67
.....................
Tether Anchor Points .45
............................
Thef t Protection .175
..
Three Way Catalytic Converter .302
..........................
Time, Setting the .174
....................................
Tire Chains .261
.........
Tire, How to Change a Flat .267
.........................
Tire Inf ormation .295
Tire Pressure Monitoring System
................................
(TPMS) .212
.............................
Indicator .63, 213
Required Federal
..........................
Explanation .298
...............................................
Tires .254
..............................
Air Pressure .255
.........................
Checking Wear .256
..........................
Compact Spare .266
....
DOT Tire Quality Grading .295 ..................
High Speed Driving .256
......................................
Inf lation .254
..................................
Inspection .256
..............................
Maintenance .258
...................................
Replacing .259
......................................
Rotating .258
................................
Service Lif e .257
...........................................
Snow .261
....................
Specif ications .260, 294
................................
Tire Chains .261
...................
Tools, Tire Changing .267
Towing
.....................................
A Trailer .215
..................
Emergency Towing .286
...........................
Traction Devices .261
Transmission
Checking Fluid Level, ..............................
Automatic .240
Checking Fluid Level, ...................................
Manual .241
..................
Fluid Selection .240, 241
..............
Identif ication Number .290
.............
Shif ting the Automatic .202
..................
Shif ting the Manual .199
...................................
Treadwear .295
.......................................
Trip Meter .67 ................................................
Trunk .86
........................................
Opening .86
...................
Open Monitor Light .61
....................................
Turn Signals .72
................................
Vanity Mirror .105
.................
Vehicle Capacity Load .192
......................
Vehicle Dimensions .292
....
Vehicle Identif ication Number .290
.............................
Vehicle Storage .264
.................................................
VIN .290
..................................
Viscosity, Oil .233
Index
U
V
VIII
—
—y
y
(#yy
2008 Civic Sedan