2004 HONDA S2000 engine

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 ormation187
THREE WAY CATALYTIC CONVERTER

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.
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 Neutral.
Increase the engine speed to 2,000
rpm,andholditthereuntilthe
temperature gauge rises to at least
1/4of thescale(about3minutes).
St at e Emissions T est ing
T echnical Inf ormation
T esting of Readiness Codes
188

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#
) 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.
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.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
196
NOTE: Dealers and Companies please provide dealer or company name,
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below for a quotation.
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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
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Check here if your billing address is different
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CUSTOMER SIGNATURE DATE
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()
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.................................
Installation .105
...............
Accessory Power Socket . 70
ACCESSORY (Ignition Key .......................................
Position) .53
....................
Additives, Engine Oil . 130
...............................
Airbag (SRS) .9, 18
..............................
Air Conditioning .74
.......................
Air Pressure, Tires .146
.............................
Alarm, Anti-theft .53
......................................
Antif reeze .132
Anti-lock Brakes (ABS) ....................
Indicator Light .41, 118
...................................
Operation .117
.
Anti-thef t Steering Column Lock . 53
............................
Anti-thef t System .94
......................................
Audio Panel .71
..................................
Audio System .78
...............
Automatic Speed Control . 95 ............................
Capacities Chart .180
.............
Carbon Monoxide Hazard . 34
........................
Cargo, .107
..............
CAUTION, Explanation of . ii
...........................................
CD Care .85
........................
CD Error Messages .86
.....................................
CD Changer .84
.......
CD Changer Error Messages . 87
.........................................
CD Player .83
........................
Certif ication Label .178
...................................
Chains, .150
Changing Oil ........................................
How to .130
......................................
When to .121
....................
Changing a Flat Tire .155
...
Charging System Indicator . 40,166
............
Checklist, Bef ore Driving . 112
........
Back-up Light Replacement . 141Battery
Charging System ...........................
Indicator .40, 166
............................
Jump Starting .162
..............................
Maintenance .151
............................
Specif ications .181
................................
Bef ore Driving .99
....................................
Belts,Seat .8,15
.............................
Beverage Holder .70
..................................
Booster Seats .31
............................................
Brakes .116
...........
Anti-lock System (ABS) . 117
.............
Break-in, New Linings . 100
...........................................
Fluid .136
.........................................
Parking .67
.................
System Indicator . 40,168
..............
Wear Indicators, Disc . 117
.............................
Braking System .116
.................
Break-in, New Vehicle . 100
..
Brightness Control, Instruments . 49
........................
Brights, Headlights .48
.........................
Bulb Replacement .137
..........................
Back-up Lights .141
.................................
Headlights .137
...........
Side Turn Signal Lights . 139
............................
Specif ications .181 ............
Turn Signal Lights . 139,141
..............................
Bulbs, Halogen .137
how to carry
tires
Index
B A C
I

..............................
Economy, Fuel .104
............
Emergencies on the Road . 153
.............
Battery, Jump Starting . 162
................
Changing a Flat Tire . 155
.....
Charging System Indicator . 166
..................
Checking the Fuses . 170
.........
Hazard Warning Flashers . 49
.....
Low Oil Pressure Indicator . 166
...
Malf unction Indicator Lamp . 167
..................
Overheated Engine . 163
...........................
Emergency Brake .67
......................
Emergency Flashers .49
............
Emergency Trunk Opener . 55
.......................
Emissions Controls .185
.....................................
Child Saf ety .22
..............................
Booster Seats .31
...................................
Child Seats .26
.....
Important Saf ety Reminders . 25
..........................
Larger Children .30
......................
Risk With Airbags .23
.............................
Small Children .26
.......................................
Child Seats .26
Cleaning .................................
Floor Mats .143
...................................
Seat Belts .143
...................................
Clutch Fluid .136
........................
CO in the Exhaust .185
.........................
Compact .154
.............
Controls, Instruments and . 70
..............................
Convertible Top .61
...............
Convertible Top Cover . 63
..
Lowering the Convertible Top . 61
................................
Maintenance .65
.....
Raising the Convertible Top . 64
Coolant ........................................
Adding .132
....................................
Checking .103
.........................
Proper Solution .132
...................
Temperature Gauge . 45Crankcase Emission Control
........................................
System .185
..............
Cruise Control Operation . 95
................
Cruise Control Indicator . 42
......................................
Cup Holder .70
Customer Relations ................................
Inf ormation .192
................
DANGER, Explanation of . ii
.......................................
Dashboard .38
................
Daytime Running Lights . 48
Daytime Running Lights .......................................
Indicator .42
.................................
Dead Battery .162
............
Def ects, Reporting Saf ety . 194
................
Def rosting the Windows . 77
....................................
Dimensions .180
...............
Dimming the Headlights . 48
Dipstick ..................................
Engine Oil .103
..........................
Directional Signals .48
........
Disc Brake Wear Indicators . 117
.....................
Disposal of Used Oil .132
...................
Do Not Tow a Trailer . 118Doors
..............
Locking and Unlocking . 54
..............................
Monitor Light .41
......................
Power Door Locks .54
..........
DOT Tire Quality Grading . 182
Downshif ting, 6-speed Manual
.............................
Transmission .114
...........................................
Driving .111
....................................
Economy .104
spare tire
Index
D
E
II

CONT INUED
.............
Halogen Headlight Bulbs . 137
..............
Hazard Warning Flashers . 49
Headlights ............
Daytime Running Lights . 48
..................
High Beam Indicator . 42
...........................
Reminder Tone .48
........
Replacing Halogen Bulbs . 137
...................................
Turning on .48
.........
Heating and Cooling System . 74
.................
High-Low Beam Switch . 48
................
High Speed, Shif ting at . 115
.............
Emissions Testing, State . 188
Engine .......................................
Coolant .132
....
Coolant Temperature Gauge . 45
Malf unction Indicator ................................
Lamp .41, 167
........
Oil Pressure Indicator . 40,166
..............
Oil, What Kind to Use . 129
...............................
Overheating .163
............................
Specif ications .180
............................
Speed Limiter .115
.......................................
Starting .113
...................
Engine, .160
......................
Ethanol in Gasoline .100
...
Evaporative Emission Controls . 185
...............................
Exhaust Fumes .34
Expectant Mothers, Use of Seat ........................................
Belts by .14
.....................................
Fan, Interior .75
Features, Comfort and ................................
Convenience .73
....................
Filling the Fuel Tank . 101Filters
...............................................
Oil .130
.............
Flashers, Hazard Warning . 49
...................
Flat Tire, Changing a . 155
Fluids ..........................................
Brake .136
.........................................
Clutch .136
..............
Manual Transmission . 134
..................
Windshield Washer . 134
..........
FM Stereo Radio Reception . 81
..........................
Four-way Flashers .49
.................................................
Fuel .100
......................
Fill Door and Cap .101
...........................................
Gauge .45
................
Octane Requirement . 100
........................
Reserve Indicator .42
........................
Tank, Filling the .101
..............
Fuel Mileage, Improving . 104
..............
Fuel Station Procedures . 101
.....................
Fuses, Checking the .170
.........................................
Gasoline .100
...............
Fuel Reserve Indicator . 42
...........................................
Gauge .45 ................
Octane Requirement . 100
........................
Tank, Filling the .101
.............................................
Gauges .44
...
Engine Coolant Temperature . 45
...............................................
Fuel .45
...............................
Speedometer .44
.................................
Tachometer .44
Gearshif t Lever Positions 6-speed Manual .........................
Transmission .114
if it won’t start
Index
F
GH
III

CONT INUED
..............
Panel Brightness Control . 49
.................................
Parking Brake .67
.................................
Parking Lights .48
.............................
PGM-FI System .186
Power ..................................
Door Locks .54
..............
Engine, Specif ications . 180
.........................................
Mirrors .66
......................................
Windows .59
..........................
Power Door Locks .54
..................
Power Socket Location . 70..............................
Power Windows .59
.........
Pregnancy, Using Seat Belts . 14
.........
Protecting Adults and Teens . 10
...
Additional Safety Precautions . 15
.....
Advice f or Pregnant Women . 14
........................
Protecting Children .22
.....................
General Guidelines .22
.......
Protecting Larger Children . 30
.........
Protecting Small Children . 26
..................................
Maintenance .119
Owner’s Maintenance ...................................
Checks .122
........................................
Record .125
....................................
Schedule .121
..
Maintenance Required Indicator . 43
.
Malf unction Indicator Lamp . 41,167
...................
Manual Transmission . 114
........
Manual Transmission Fluid . 134
...............................
Meters, Gauges .44
..........................
Mirrors, Adjusting .66
...............
Modif ying Your Vehicle . 106
..................
New Vehicle Break-in . 100
.....................
Normal Shif t Speeds .115
..................
NOTICE, Explanation of . ii
...............
Numbers, Identif ication . 178
...
Octane Requirement, Gasoline . 100
.........................................
Odometer .44 ...............................
Odometer, Trip .44
Oil ........................
Change, How to .130
......................
Change, When to .121
......................
Checking Engine .103
..............
Pressure Indicator . 40,166
Selecting Proper Viscosity ......................................
Chart .130
...........
ON (Ignition Key Position) . 53
.........................
Opening the Trunk .54
..............................
Outside Mirrors .66
....................
Overheating, Engine .163
...................
Radiator Overheating . 163
.......................
Radio Sound System .78
...................
Readiness Codes . 167,188
..
Rear Lights, Bulb Replacement . 141
............................
Rear View Mirror .66
................
Reclining the Seat-backs . 58
.......
Recommended Shif t Speeds . 115
Recovery Vehicle, Emergency .......................................
Towing .176
.............................
Reminder Lights .40
.......................
Remote Transmitter .56
Index
M
N
O P
R
V

Replacement Inf ormation................
Engine Oil and Filter . 130
..........................................
Fuses .170
................................
Light Bulbs .137
....................................
Schedule .121
...........................................
Tires .148
.............................
Wiper Blades .144
Replacing Seat Belts Af ter a ............................................
Crash .17
...............................
Restraint, Child .22
................................
Rotation, Tire .148
........................................
Saf ety Belts .8
............
Safety Defects, Reporting . 194
.............
Saf ety Labels, Location of . 35
...............................
Saf ety Messages .ii
..................................
Satellite Radio .88
...........................................
Seat Belts .8
...............
Additional Information . 15
.....
Advice f or Pregnant Women . 14
.....................................
Cleaning .143
......................
Lap/Shoulder Belt .16
................................
Maintenance .17
......
Reminder Light and Beeper . 40...................
System Components . 15
...............
Use During Pregnancy . 14
........................
Seats, Adjusting the .58
...............................
Serial Number .178
...........................
Service Intervals .121
.............................
Service Manual .195
.........
Service Station Procedures . 101
Shif ting The 6-speed Manual
.........................
Transmission .114
Side Turn Signal, Bulb .........................
Replacement in .140
...............................
Signaling Turns .48
6-speed Manual Transmission ...............
Checking Fluid Level . 134
................................
Shif ting the .114
.....................................
Snow Tires .149
..................................
Sound System .78
Spare Tire ......................................
Inf lating .154
............................
Specif ications .181
....................
Specif ications Charts . 180
..................................
Speed Control .95
...................................
Speedometer .44
..........
SRS, Additional Inf ormation . 18
...
Additional Safety Precautions . 21....................
Airbag Components . 18
.............................
Airbag Service .21
How the SRS Indicator .......................................
Works .20
...........
How Your Airbags Work . 18
..................
SRS Indicator Light . 20,41
.......................
Starting the Engine .113
................
With a Dead Battery . 162
..............
State Emissions Testing . 188
........
Steam Coming f rom Engine . 163
Steering Wheel .............
Anti-theft Column Lock . 53
.....................
Stereo Sound System .78
....................
Storing Your Vehicle .152
................................
Stuck Vehicle .174
Supplemental Restraint System ......................................
Servicing .21
.........................
SRS Indicator .20 ,41
...............
Tensioners, Seat Belts . 16
.....................................
Tachometer .44
......
Taillights, Changing Bulbs in . 141
.
Taking Care of the Unexpected . 153
Index
S
T
VI