2008 HONDA FIT engine

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.
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 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 .
The Clean Air Act
Crankcase Emissions Control
System
Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
Technical Inf ormation
251
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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
quality parts may increase the
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 System Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
252
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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.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.
The three way catalytic converter
must operate at a high temperature
for 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. 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
253
THREE WAY CATALYTIC CONVERTER
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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.
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).
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).
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. Without touching the accelerator
pedal, let the engine idle f or 20
seconds.
1.
2.
3. 4.
5.
6.
T esting of Readiness Codes
Emissions T esting
254
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Select a nearby lightly traveled
major highway where you can
maintain a speed of 50 to 60 mph
(80to97km/h)foratleast20
minutes. Drive on the highway in
D (automatic) or 5th (manual). Do
notusethecruisecontrol.When
traffic allows, drive for 90 seconds
without moving the accelerator
pedal. (Vehicle speed may vary
slightly; this is okay.) If you cannot
do this f or a continuous 90
seconds because of traf f ic
conditions, drive f or at least 30
seconds, then repeat it two more
times (for a total of 90 seconds).Then drive in city/suburban
traffic for at least 10 minutes.
When traf f ic conditions allow, let
the vehicle coast f or several
seconds without using the
accelerator pedal or the brake
pedal.
Make sure the vehicle has been
parked with the engine of f f or 30
minutes.
If the testing f acility determines the
readiness codes are still not set, see
your dealer.
7. 8.
9.
Emissions T esting
Technical Inf ormation
255
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T he publications shown below can be purchased f rom Helm
Incorporated. You can order by phone or online:Call Helm Inc. at 1-800-782-4356 (credit card orders only)
Go online at
If you are interested in other years or models, contact Helm Inc.
at 1-800-782-4356.Covers maintenance and recommended procedures f or
repair to engine and chassis components. It is written
f or the journeyman mechanic, but it is simple enough
f or most mechanically inclined owners to understand.
Complements the Service Manual by providing in-depth
troubleshooting inf ormation f or each electrical circuit
in your vehicle.
Describes the procedures involved in the replacement
of damaged body parts.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
Purchasing Factory Authorized Manuals (U.S. only)
Authorized Manuals
261
Form Description
2008 Honda Fit Service Manual 2008 Honda Fit
Electrical Troubleshooting Manual
2008 Honda Fit Body Repair Manual 2008 Honda Fit Owner’s Manual
2008 Honda Fit Honda Service History 2008 Honda Fit Quick Start GuideOrder Form for Previous Years-
Indicate Year and Model Desired
Publication
Form Number 61SAA01
61SAA01EL
61SAA30
31SAA610
31SAAM10 31SAAQ10 HON-R
www. helminc. com
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CONT INUED
....................................
Accessories .144
ACCESSORY (Ignition Key
.......................................
Position) .78
...............
Accessory Power Socket .99
....................
Additives, Engine Oil .188
.......
Adjusting the Steering Wheel .75
...........................
Advanced Airbags .27
...............................
Airbag (SRS) .9,22
..............
Air Conditioning System .102
.........................................
Usage .103
.......................
Air Pressure, Tires .210
.......................
Alcohol in Gasoline .136
......................................
Antif reeze .190
Anti-lock Brakes (ABS)
...............................
Indicator .62,168
...................................
Operation .168
..............
Anti-thef t, Audio System .128
.
Anti-thef t Steering Column Lock .78
................................
Audio System .107
...
Automatic Seat Belt Tensioners .20
.............
Automatic Speed Control .131
..............
Automatic Transmission .157
..........................
Capacity, Fluid .244
...............
Checking Fluid Level .193 ..........................
Paddle Shif ters .162
.......................................
Shif ting .157
Shif t Lever Position
...............................
Indicators .157
................
Shif t Lever Positions .158
....................
Shif t Lock Release .161
......................
Auxiliary Input Jack .127
............................
Capacities Chart .244
.............
Carbon Monoxide Hazard .53
Battery
Charging System ...........................
Indicator .60,230
............................
Jump Starting .226
..............................
Maintenance .214
............................
Specif ications .245
..............................
Bef ore Driving .135
....................................
Belts,Seat.8,18
...........................
Beverage Holders .98
..................................
Booster Seats .50
Brakes
...........
Anti-lock System (ABS) .168
.............
Break-in, New Linings .136
....................
Bulb Replacement .201
...........................................
Fluid .195
.........................................
Parking .96 .................
System Indicator .60,232
..........................
System Design .167
........................
Wear Indicators .167
.............................
Braking System .167
.................
Break-in, New Vehicle .136
..
Brightness Control, Instruments .74
..................
Brights, Headlights .72,73
Bulb Replacement
..........................
Back-up Lights .201
..............................
Brake Lights .201
Front Parking Lights/
...
Front Side Marker Lights .198
.................................
Fog Lights .199
.................................
Headlights .196
.........
High-mount Brake Light .202
............................
Specif ications .245
....................................
Taillights .201
............
Turn Signal Lights .198,201
..............................
Bulbs, Halogen .196
Index
A
B
C
INDEX
I
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ÎÎÎ
ÎÎ
..............................................
Cargo .146
....................
Cargo, How to Carry .146
.............................
Carrying Cargo .146
.............
CAUTION, Explanation of .iii
.........................................
CD Care .124
.....................
CD Error Messages .123
.......................................
CD Player .114
.................................
Center Pocket .97
........................
Certif ication Label .242
.................................
Chains, Tires .214
....................
Changing a Flat Tire .219
.................................
Changing Oil .188
........................................
How to .188
......................................
When to .179
...
Charging System Indicator .60,230
..............
Check Fuel Cap Indicator .68
............
Checklist, Bef ore Driving .153
.....................................
Child Saf ety .34
..............................
Booster Seats .50
.............................
Child Seats .34,41
.....
Important Saf ety Reminders .34
..........................................
Inf ants .39
............................
Large Children .49
.........................................
LATCH .43
......................
Risks with Airbags .35
.............................
Small Children .40 .........................................
Tethers .47
...........................
Warning Labels .36
.........
Where Should a Child Sit? .35
.................................
Child Seats .34,41
.........................................
LATCH .43
..........
Tether Anchorage Points .47
..................
Childproof Door Locks .80
................
Cleaning the Seat Belts .203
....................
Cleaning the Wheels .208
..............................................
Clock .129
...................................
Clutch Fluid .195
........................
CO in the Exhaust .251
............
Cold Weather, Starting in .154
...............
Consumer Inf ormation .258
.............
Controls, Instruments and .57
Coolant
........................................
Adding .190
....................................
Checking .140
.........................
Proper Solution .190
...............
Temperature Indicator .63
Crankcase Emissions Control ........................................
System .251
................
Cruise Control Indicator .65
............
Cruise Control Operation .131
.....................................
Cup Holders .98
.............
Customer Service Of f ice .258 ...............
DANGER, Explanation of .iii
...................................
Dashboard .3,58
............
Daytime Running Lights .73
Daytime Running Lights
...................................
Indicator .65
.................................
Dead Battery .226
............
Def ects, Reporting Saf ety .260
................
Def ogger, Rear Window .74
..............
Def rosting the Windows .105
.........................
Detachable Anchor .93
....................................
Dimensions .244
.........
Dimming the Headlights .72,73
Dipstick
..........
Automatic Transmission .193
..................................
Engine Oil .139
..........................
Directional Signals .72
........
Disc Brake Wear Indicators .167
.......................................
Disc Care .124
.......
Disc Player Error Messages .123
.....................
Disposal of Used Oil .189
Doors
..............
Childproof Door Locks .80
..............
Locking and Unlocking .79
......................
Power Door Locks .79
Index
D
II
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