2003 HONDA INSIGHT 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
T echnical Inf ormation
387

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 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 inf orma-
tion.
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)
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 Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
388

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.
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.The defective three way catalytic
converters contribute to air pollution,
and can impair your engine’s
perf ormance. Follow these
guidelines to protect your vehicle’s
three way catalytic converters. 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.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
T echnical Inf ormation
389
U.S. model is shown.
THREE WAY CATALYTIC CONVERTERS

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.
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 (4° and 35°C). Keep the vehicle in Park. Increase
the engine speed to 2,000 rpm, and
hold it there f or about 3 minutes.
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 est ing
390

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).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 est ing
T echnical Inf ormation
391

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.
Purchasing Factory Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
(U.S. only)
Authorized Manuals
Authorized Manuals
397
Form Description
2013 Honda Insight Service Manual 2013 Honda Insight
Electrical Troubleshooting Manual 2013 Model Series Honda Insight Body Repair Manual
2013 Honda Insight Owner’s Manual 2013 Honda Insight
Navigation System Owner’s Manual
2013 Honda Insight Honda Service History 2013 Honda Insight
Technology Reference Guide (LX/EX) 2013 Honda Insight
Technology Reference Guide (EX with Navigation) Order Form for Previous Years-
Indicate Year and Model Desired
Publication
Form Number 61TM803
61TM803EL
61TM830
31TM8630
31TM8830
31TM8M30 31TM8Q30
31TM8S00 HON-R
www.helminc.com

CONT INUED
BatteryCharging System ...........................
Indicator .63, 364
............................
Jump Starting .358
..............................
Maintenance .344
............................
Specif ications .381
..............................
Bef ore Driving .243
....................................
Belts,Seat .9,21
...........................
Beverage Holder .154
.......
Bluetooth
HandsFreeLink. 225
Brakes ...........
Anti-lock System (ABS) . 287
.............
Break-in, New Linings . 244
....................
Bulb Replacement .330
...........................................
Fluid .319
...................
Pad Wear Indicator . 286
.......................................
Parking .151
...........
System Indicator . 63,64,366
....................................
Accessories .254
ACCESSORY (Ignition Key .....................................
Position) .131
.............
Accessory Power Socket . 155
................
Active Head Restraints . 144
....................
Additives, Engine Oil . 311
.............................
Airbag (SRS) .10, 25
...
Airbags, Additional Information . 25
...
Additional Safety Precautions . 37
..........
AdvancedAirbagSystem . 30
.............................
Airbag Service .36
How the Passenger Airbag Of f ......................
Indicator Works .35
How the Side Airbag Of f ......................
Indicator Works .34
..
How the SRS Indicator Works . 34
How Your Front Airbags .........................................
Work .28
...
How Your Side Airbags Work . 32
How Your Side Curtain Airbags .........................................
Work .33
........................
SRS Components .25
..............
Air Conditioning System . 162
.......................
Air Pressure, Tires .339 ................................
Ambient Meter .72
......................................
Antif reeze .315
Anti-lock Brakes (ABS) ...............................
Indicator .64, 287
...................................
Operation .287
..............
Anti-thef t, Audio System . 219
Anti-thef t Steering Column ............................................
Lock .131
..........................................
Armrest .146
................................
Audio System .168
.......................
Auto Door Locking .109
...................
Auto Door Unlocking . 110
................................
Auto Idle Stop .281
...
Automatic Seat Belt Tensioners . 23
.............
Automatic Speed Control . 222
.
Automatic Transmission (CVT) . 271
..........................
Capacity,Fluid .380
...............
Checking Fluid Level . 318
Paddle Shif ters in the ..............................
D Position .276
Paddle Shif ters in the ...............................
S Position .279
.....
Recommended Shif t Points . 280
.......................................
Shif ting .272
Shif t Lever Position ...............................
Indicators .271 ................
Shif t Lever Positions . 273
....................
Shif t Lock Release . 275
......................
Auxiliary Input Jack .218
Index
A
B
INDEX
I

Index
.............................
Braking System .285
.................
Break-in, New Vehicle . 244
Brightness Control, ...............................
Instruments .124
Bulb Replacement ..........................
Back-up Lights .327
..............................
Brake Lights .330
........
Front Side Marker Lights . 326
.........
Front Turn Signal Lights . 325
.................................
Headlights .321
..........................
Parking Lights .324
..........
Rear Turn Signal Lights . 327
............................
Specif ications .381
..............................
Bulbs, Halogen .321 ...............
DANGER, Explanation of . iv
...................................
Dashboard .3, 60
..............
Daytime Running Lights . 123
............
Def ects, Reporting Saf ety . 396
..............
Def ogger, Rear Window . 126
......
Def rosting the Windows . 165,166
....................................
Dimensions .380
.............
Dimming the Headlights . 120
Dipstick ..........
Automatic Transmission . 318
..................................
Engine Oil .249
........................
Directional Signals .120
Disc Brake Pad Wear ...................................
Indicators .286
............................
Disc Player .173, 188
.....................
Disposal of Used Oil .314
..........................
Cargo Area Light .160
............................
Capacities Chart .380
.............
Carbon Monoxide Hazard . 56
.............................
Carrying Cargo .256
.............
CAUTION, Explanation of . iv
..................................
Ceiling Light .159
..............................
Center Pockets .157
...................................
Center Tray .156
........................
Certif ication Label .378 ............................................
Chains .342
....................
Changing a Flat Tire .349
Changing Oil ........................................
How to .312
......................................
When to .299
...
Charging System Indicator . 63,364
............
Checklist, Bef ore Driving . 262
.....................................
Child Saf ety .38
Child Seats .............
LATCH Anchor System . 47
.............................
Lower Anchor .47
............................
Tether Anchor .51
................
Childproof Door Locks . 134
.............................
Climate Control .162
.........................
Clock, Setting the .220
........................
CO in the Exhaust .387
............
Cold Weather, Starting in . 263
..............................
Compact Spare .348
.................
Console Compartment . 155
.............
Controls, Instruments and . 59
Coolant ........................................
Adding .315
....................................
Checking .250
.........................
Proper Solution .315
...............
Temperature Indicator . 67Crankcase Emissions Control
........................................
System .387
............
Cruise Control Operation . 222
.........................
Customer Service .394
C D
II