2003 HONDA PILOT engine

µ µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
Specif ications
T echnical Inf ormation363
Tires Alignment Engine
Fuses
Lights
Battery 60 W/55 W
12 V
Size
Pressure60 psi (420 kPa , 4.2 kgf/cm
)
32 psi (220 kPa , 2.2 kgf/cm)
T155/90D16 110M P235/70R16 104S
Toe-in
Camber
Caster
1°88’0°50’ 0°50’
0.00 in (0.0 mm)
0.00 in (0.0 mm)
Type
BorexStroke
Displacement
Compression ratio
Spark plugs
10.0 : 1
211.8 cu-in (3,471 cm
)
3.50 x 3.66 in (89.0 x 93.0 mm)
Interior
Under-hood
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V Water cooled 4-stroke SOHC,
V6 gasoline engine
Headlights
Front side marker lights
Front turn signal lights/
Parking lights
Rear side marker lights
Rear turn signal/hazard lights
Stop/Taillights
Backup lights
License plate lights
High-mount brake light
Individual map lights
Tailgate light
Vanity mirror light
Door (Courtesy) light
Grabrail lights
Console lights 12 V
12 V
12 V
5W
27 W/8 W
5W
21 W/5 W
21 W/5 W
21 CP (18 W)
5W
18 W
6.2 W
5W
1.1 W
3.8 W
Capacity 12 V 65 AH/20 HR14 V 12 V 12.4 W
1.4 W See page
357or the fuse label
attached to the dashboard.
See page 357or the fuse label
attached to the inside of the fuse
box door under the dashboard.
See page 356or the fuse box
cover.
See spark plug maintenance
section page 301 .
Front/Rear
Spare
Front/Rear
Spare Front
Rear
Front
Rear
Front
Driver’s side
Passenger’s side
(1157 NA)
(168)
(7443)
(7443) (921)
(168)
(921)
(204)
(HB2)
(168)

ÎÎ
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.
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 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 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
.
272
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
T echnical Inf ormation
Emissions Cont rols
368

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 emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual f or more informa-
tion.
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 operat-
ing 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 ), dinitrogen
(N ), and water vapor.
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
genuine Honda replacement parts or
their equivalent f or repairs. Using
lowerqualitypartsmayincreasethe
emissions f rom your vehicle.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
T echnical Inf ormation
Emissions Cont rols
369

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.Keep the engine tuned-up.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
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.
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 com-
bustible materials that come near it.
Parkyourvehicleawayfromhigh
grass, dry leaves, or other f lamma-
bles. 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.
Three Way Catalytic Converter
T echnical Inf ormation370
THREE WAY CATALYTIC CONVERTER

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 8
hours or more.
Make sure the ambient
temperature is between 20° and
95°F.
Without touching the accelerator
pedal, start the engine and let it
idle f or 20 seconds.Keep the vehicle in Park.
Increase the engine speed to 2,000
rpm and hold it there until the
temperature gauge rises to at least
1/4of thescale(approximately3
minutes).
If you take your vehicle f or a state
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.
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 re-tested within the
next two or three days, you can
condition the vehicle for re-testing
by doing the f ollowing. 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. Do not use the cruise control.
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).
T echnical Inf ormation
T esting of Readiness Codes
St at e Emissions T est ing
371

µµ
µ
(


%
)
$
%

.
"

#
) This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
This manual describes the procedures involved in the
replacement of damaged body parts. This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the Journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand. Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
Authorized Manuals
378
NOTE: Dealers and Companies please provide dealer or company name,
and also the name of the person to whose attention the shipment should
be sent. For purchases outside U.S.A. please write to the address shown
below for a quotation.
P.O. BOX 07280·DETROIT, MICHIGAN 48207·1-800-782-4356
Customer Name Attention
Apartment Number
State & Zip Code
City
Daytime Telephone Number
Check or money order enclosed payable to Helm Inc U.S. funds only.
Do not send cash
Master
Card VISA
Check here if your billing address is different
from the shipping address shown above.
Account Number Expiration: Mo. Yr.
CUSTOMER SIGNATURE DATE
Street Address No P.O. Box Number
()
These Publications cannot be returned for credit without receiving advance authorization within 14
days of delivery. On returns, a restocking fee may be applied against the original order.

CONT INUED
...
Accessories and Modif ications . 223
................................
Accessories .223
...
Additional Safety Precaution . 224
............................
Modif ications .224
ACCESSORY (Ignition Key .......................................
Position) .82
............
Accessory Power Sockets . 110
....................
Additives, Engine Oil . 284
...............................
Airbag (SRS) .9, 50
.....................
Air Cleaner Element .297
......
Air Conditioning System . 118,130
..............................
Maintenance .306
.....................
Rear A/C Control .135
.................................
Usage .118, 130
...............
Air Outlets (Vents) . 120,128
.......................
Air Pressure, Tires .308
.......................
Alcohol in Gasoline .366
.......
Aluminum Wheels, Cleaning . 327
......................................
Antif reeze .287
Anti-lock Brakes (ABS) ....................
Indicator Light .63, 243
...................................
Operation .242
..............
Anti-thef t, Audio System . 153
.
Anti-thef t Steering Column Lock . 81..........................
Appearance Care .325
................
Audio System . 137,153,168
...
Automatic Seat Belt Tensioners . 48
...
Automatic Lighting Off Feature . 73
.............
Automatic Speed Control . 207
..............
Automatic Transmission . 233
..........................
Capacity, Fluid .362
...............
Checking Fluid Level . 293
.......................................
Shif ting .234
.
Shif t Lever Position Indicator . 233
................
Shif t Lever Positions . 234
....................
Shif t Lock Release . 236
Battery Charging System ...........................
Indicator .62, 348
............................
Jump Starting .343
..............................
Maintenance .302
............................
Specif ications .363
..............................
Bef ore Driving .215
....................................
Belts,Seat .8,46
.........................
Beverage Holders .105
.................................
Body Repairs .332 Brakes
...........
Anti-lock System (ABS) . 242
.............
Break-in, New Linings . 216
...........................................
Fluid .295
....................
Bulb Replacement .320
.......................................
Parking .104
.................
System Indicator . 63,351
........................
Wear Indicators .241
.............................
Braking System .241
.................
Break-in, New Vehicle . 216
..
Brightness Control, Instruments . 73
........................
Brights, Headlights .72
Bulb Replacement ..........................
Back-up Lights .321
..............................
Brake Lights .320
......................
Cargo Area Light .323
................
Front Parking Lights . 318
........
Front Side Marker Lights . 319
.................................
Headlights .317
..............
Individual Map Lights . 322
...................
License Plate Light . 321
.................................
Rear Bulbs .320
............................
Specif ications .363
............
Turn Signal Lights . 318,320
..............................
Bulbs, Halogen .317
Index
A
B
I

Î
................................
Cancel Button .209
............................
Capacities Chart .362
.............
Carbon Monoxide Hazard . 56
.............................
Carrying Cargo .225
Cassette Player ............................................
Care .181
...................
Operation . 149,160,178
..............
CAUTION, Explanation of . ii
..................
CD Changer . 145,165,184
......................
CD Player .143, 163,182
........................
Certif ication Label .360
............................................
Chains .315
Change Oil ........................................
How to .285
.............................
When to .274, 276
....................
Changing a Flat Tire .335
............
Changing Engine Coolant . 289
...
Charging System Indicator . 62,348
............
Checklist, Bef ore Driving . 231
..................
Childproof Door Locks . 87
.....................................
Child Saf ety .21
.......................................
Child Seats .21
..........
Tether Anchorage Points . 42
....................
Cleaner Element, Air . 297Cleaning
....................
Aluminum Wheels .327
...................................
Carpeting .328
......................................
Exterior .326
.........................................
Fabric .329
.......................................
Interior .328
.......................................
Leather .329
...................................
Seat Belts .329
...........................................
Vinyl .329
....................................
Windows .330
...............
Climate Control System . 128
......................................
Coat Hook .111
.....................
Code, Audio System .189
........................
CO in the Exhaust .368
........................................
Coin Box .111
............
Cold Weather, Starting in . 232
..............................
Compact Spare .334
...............
Consumer Inf ormation . 374
.............
Controls, Instruments and . 59
Coolant ........................................
Adding .287
....................................
Checking .221
.........................
Proper Solution .287
...................................
Replacing .289
...................
Temperature Gauge . 68
....................
Corrosion Protection .331 Crankcase Emissions Control
........................................
System .368
............
Cruise Control Operation . 207
Customer Relations ................................
Inf ormation .374
................
DANGER, Explanation of . ii
...................................
Dashboard .2, 60
................
Daytime Running Lights . 73
............
Def ects, Reporting Saf ety . 376
................
Def ogger, Rear Window . 77
......
Def rosting the Windows . 125,133
....................................
Dimensions .362
...............
Dimming the Headlights . 72
Dipstick ..........
Automatic Transmission . 293
..................................
Engine Oil .220
..........................
Directional Signals .74
........
Disc Brake Wear Indicators . 241
.....................
Disposal of Used Oil .286
Doors ..............
Locking and Unlocking . 82
....................
Lockout Prevention . 83
......................
Power Door Locks .82
Index
C
D
II