2004 HONDA INSIGHT catalytic converter

This shows how much f uel you have.
It may show slightly more or less
than the actual amount.This shows the temperature of the
engine’s coolant. During normal
operation, the reading should be in
the middle of the gauge. In severe
driving conditions, the reading may
reach near the red mark. If it
reaches the red mark, pull saf ely to
thesideof theroad.Turntopage
f or instructions and precautions
on checking the engine’s cooling
system. The odometer shows the total
distance your vehicle has been
driven in miles and kilometers. It is
illegal under U.S. f ederal law and
Canadian provincial regulations to
disconnect, reset, or alter the
odometer with the intent to change
the number of miles and kilometers
indicated.
Push the Display Change button to
switch the speedometer, trip meter,
and odometer reading between miles
per hour and kilometers per hour.
175
Gauges
Inst rument s and Cont rols
Fuel Gauge
T emperature GaugeOdometer
Display Change Button
47
NOTICE:Avoid driving with an
extremely low f uel level. Running out
of f uel could cause the engine to
misf ire, damaging the catalytic
converter.

Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly or
your vehicle may roll if it is parked
on an incline.
If your vehicle has an automatic
transmission, set the parking brake
bef ore you put the transmission in
Park. This keeps the vehicle f rom
moving and putting pressure on the
parking mechanism in the
transmission.If the vehicle is f acing uphill, turn
the f ront wheels away f rom the
curb. If you have a manual
transmission, put it in f irst gear.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb. If you have a manual
transmission, put it in reverse gear.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes.Make sure the windows are closed.
Turn of f the lights.
Place any packages, valuables, etc.
in the storage box or take them
with you.
Lock the doors and the hatch with
the key or the remote transmitter.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.
Parking T ips
Driving
Parking T ips
118

Thediagramsinthissectiongive
you the dimensions and capacities of
your Honda, and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems.................
Identif ication Numbers . 190
................................
Specif ications .192
DOT Tire Quality Grading ......................
(U.S. Vehicles) .194
Unif orm Tire Quality ..................................
Grading .194
.................................
Treadwear .194
......................................
Traction .194
.............................
Temperature .195
.................................
Tire Labeling .196 .......................
Emissions Controls .197
.....................
The Clean Air Act .197
Crankcase Emissions Control ....................................
System .197
Evaporative Emissions Control ....................................
System .197
Onboard Ref ueling Vapor ................................
Recovery .197
...
Exhaust Emissions Controls . 198
....................
PGM-FI System .198
Ignition Timing Control ................................
System .198
Three Way Catalytic ...........................
Converter .198
....................
Replacement Parts . 198
..
Three Way Catalytic Converter . 199
..............
State Emissions Testing . 200
....
Testing of Readiness Codes . 200
T echnical Inf ormat ion
T echnical Inf ormation189

The exhaust emissions controls
include three systems: PGM-FI,
Ignition Timing Control, and Three
Way Catalytic Converter. These
three 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 from 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 Engine Control Module (ECM)
or 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 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
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.
2
2
Emissions Cont rols
T echnical Inf ormation
Exhaust Emissions Controls Replacement PartsPGM-FI Syst em
Ignit ion T iming Cont rol Syst emThree Way Catalytic Converter
198

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 com-
bustible materials that come near it.
Parkyourvehicleawayfromhigh
grass, dry leaves, or other f lamma-
bles.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.
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 tuned-up.
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 ormation199
THREE WAY CATALYTIC CONVERTER
THREE WAY CATALYTIC CONVERTER

CONT INUED
....................
Storing Your Vehicle .161
Supplemental Restraint ..................................
System .9,19
......................................
Servicing .22
.........................
SRS Indicator .21 ,42
...................
System Components . 19
..................................
Synthetic Oil .134
......
Taillights, Changing Bulbs in . 147
Taking Care of the ...............................
Unexpected .163
Technical Descriptions ......
DOT Tire Quality Grading . 194
.....
Emissions Control Systems . 197
Three Way Catalytic ...............................
Converter .199
.......................
Temperature Gauge .47
..........
Temperature, Inside Sensor . 77
..............
Tether Anchorage Points . 31
..
Three Way Catalytic Converter . 199
............................
Time, Setting the .89
....................................
Tire Chains .159
.........
Tire, How to Change a Flat . 165
...........................
Tire Inf ormation .196 .................................
Tire Labeling .196
...............................................
Tires .154
..............................
Air Pressure .155
.........................
Checking Wear .156
..........................
Compact Spare .164
......
DOT Tire Quality Grading . 194
......................................
Inf lation .154
..................................
Inspection .156
...................................
Replacing .157
......................................
Rotating .157
...........................................
Snow .159
............................
Specif ications .193
................................
Tire Chains .159
...................
Tools, Tire Changing . 165
Towing .....................................
A Trailer .121
................
Emergency Wrecker . 181
Transmission Checking Fluid Level, ..................
Automatic (CVT) . 140
Checking Fluid Level, ...................................
Manual .141
..................
Fluid Selection . 140,141
..............
Identif ication Number . 191
..................
Shif ting the Manual . 108
.....................................
Treadwear .194 .....................................
Trip Meters .48
....................................
Trip Mileage .48
....................................
Turn Signals .54
Unexpected, Taking Care ..........................................
of the .163
....
Unif orm Tire Quality Grading . 194
..........................
Unleaded Gasoline .92
.......
Used Oil, How to Dispose of . 136
.................
Vehicle Capacity Load . 102
......................
Vehicle Dimensions .192
....
Vehicle Identif ication Number . 190
.............................
Vehicle Storage .161
.................................................
VIN .190
..................................
Viscosity, Oil .134
Index
T U
V
VII