air condition HONDA PILOT 2004 1.G Owner's Manual

ÎÎIn 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 Crank- case 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 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.
Scheduled maintenance is on page
.
164
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
The Clean Air Act
Emissions Cont rols
T aking Care of t he Unexpect ed223

The exhaust emissions controls
include f our systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas Recirculation and Three Way
Catalytic Converter. These four
systems work together to control the
engine’s combustion and minimize
the amount of HC, CO, and NOx that
comes 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 Fuel Control.
The Powertrain Control Module
(PCM) 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.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 f or more informa-
tion.
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 ), dinitrogen
(N ), and water vapor. 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.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emT hree Way Cat alyt ic Convert er
Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Emissions Cont rols
T echnical Inf ormation224

CONT INUED
BatteryCharging System ...........................
Indicator .48, 206
............................
Jump Starting .202
..............................
Maintenance .193
............................
Specif ications .219
..............................
Bef ore Driving .123
....................................
Belts,Seat .8,16
...........................
Beverage Holders .77
..................................
Booster Seats .39 Brakes
...........
Anti-lock System (ABS) . 145
.............
Break-in, New Linings . 124
...........................................
Fluid .178
....................
Bulb Replacement .182
.........................................
Parking .75
.................
System Indicator . 49,208
........................
Wear Indicators .145
.............................
Braking System .144
.................
Break-in, New Vehicle . 124
..
Brightness Control, Instruments . 59
........................
Brights, Headlights .58
Bulb Replacement ..............................
Brake Lights .182
................
Front Parking Lights . 181
........
Front Side Marker Lights . 183
.................................
Headlights .180
........
High-mount Brake Lights . 182
.................................
Rear Bulbs .182
............................
Specif ications .219
.............
Turn Signal Light . 181,182
..............................
Bulbs, Halogen .180
...
Accessories and Modif ications . 129
ACCESSORY (Ignition Key .......................................
Position) .64
..............
Accessory Power Sockets . 77
....................
Additives, Engine Oil . 172
...............................
Airbag (SRS) .9, 19
.....
Airbags, Additional Infomation . 19
...
Additional Safety Precautions . 24
.............................
Airbag Service .24
How the Side Airbag Of f ......................
Indicator Works .23
..
How the SRS Indicator Works . 23
How Your Front Airbags .........................................
Work .20
...
How Your Side Airbags Work . 22
........................
SRS Components .19
................
Air Conditioning System . 82
.......................
Rear A/C Control .87
.......................
Air Pressure, Tires .188
......................................
Antif reeze .174
Anti-lock Brakes (ABS) ....................
Indicator Light .49, 146
...................................
Operation .145
..............
Anti-thef t, Audio System . 102 .
Anti-thef t Steering Column Lock . 64
..................................
Audio System .88
...
Automatic Seat Belt Tensioners . 18
...
Automatic Lighting Off Feature . 58
.............
Automatic Speed Control . 116
..............
Automatic Transmission . 138
..........................
Capacity, Fluid .218
...............
Checking Fluid Level . 176
.......................................
Shif ting .138
.
Shif t Lever Position Indicator . 138
................
Shif t Lever Positions . 139
....................
Shif t Lock Release . 141
Index
A
B
I