1996 HONDA ODYSSEY engine

Emission Controls

Exhaust Emission Controls

The exhaust emission controls include four systems: PGM-FI,
Ignition Timing Control, ExhaustGas Recirculation and Three Way
Catalytic Converter. These foursystems work together to control the
engine's combustion and minimize
the amount of HC, CO, and NOx that comes out the tailpipe. The exhaust
emission control systems areseparate from the crankcase and
evaporative emission control

systems.

PGM-FI System
The PGM-FI System uses sequential multiport fuel 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 fuel to inject under all operat-
ing conditions. Ignition Timing Control System
This system constantly adjusts the ignition timing, reducing the amount
of HC, CO and NOx produced.
Exhaust Gas Recirculation (EGR)
System

The Exhaust Gas Recirculation (EGR) system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding exhaust gas to the air/fuel mixture reduces
the amount of NOx produced when
the fuel is burned.
Three Way Catalytic Converter
The three way catalytic converter is in the exhaust system. Throughchemical reactions, it converts HC, CO, and NOx in the engine's exhaust
to carbon dioxide (CO 2), dinitrogen

(N 2), and water vapor.
Replacement Parts

The emission control systems are designed and certified 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 for repairs. Usinglower quality parts may increase theemissions from your car.
The emissions control systems are covered by warranties separate from
the rest of your car. Read your
warranty manual for more informa-
tion.

Technical InformationProCarManuals.comMain Menu s t Table of Contents

Three Way Catalytic Converter

The three way catalytic converter contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without affecting the metals.
The catalytic converter is referred to as a three-way catalyst, since it actson 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 fire any com-
bustible materials that come near it.
Park your car away from high grass,dry leaves, or other flammables. A defective three way catalytic
converter contributes to air pollution,and can impair your engine's per-
formance. Follow these guidelines to protect your car's three way catalyticconverter.
Always use unleaded gasoline.Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter ineffective.
Keep the engine tuned-up.

Have your car diagnosed and

repaired if it is misfiring, back-

firing, stalling, or otherwise not
running properly.

Technical Information
THREE WAY CATALYTIC CONVERTERProCarManuals.comMain Menu s t Table of Contents

Authorized Manuals

P.O.BOX 07280 DETROIT MICHIGAN 48207 1-800-782-4356 Service Manual:
This manual covers maintenance and recommended procedures for repair to engine and chassis components.It is written for the Journeyman mechanic, but is simple
enough for most mechanically-inclined owners to under-

stand.

Electrical Troubleshooting Manual:
This manual complements the Service Manual by providing in-depth troubleshooting information for each
electrical circuit in your car.
Body Repair Manual:
This manual describes the procedures involved in the replacement of damaged body parts.ProCarManuals.comMain Menu s t Table of Contents

Index

Accessories
Installation.................................. 115

ACCESSORY (Ignition Key
Position)........................................ 50

Adding Automatic Transmission
Fluid........................................ 155
Brake Fluid................................. 156

Engine Coolant........................... 151

Engine Oil................................... 146

Power Steering Fluid................. 157
Windshield Washer Fluid......... 154

Additional Safety Information........ 18

Door Locks................................... 19Driving with Pets......................... 19
Head Restraint Position.............. 18
Seat-back Position........................ 18

Storing Cargo Safely................... 19

Additives, Engine Oil..................... 148
Adjustments
Mirrors.......................................... 64

Head Restraints........................... 56
Seats.............................................. 54

Steering Wheel............................ 44
Airbag (SRS).................................... 12

Air Cleaner..................................... 158

Air Conditioning............................... 74
Maintenance............................... 168

Usage............................................. 74

Air Outlets (Vents).......................... 76

Air Pressure, Tires........................ 170
Alcohol and Drugs........................... 28

Alcohol in Gasoline........................ 108
Antifreeze....................................... 150

Anti-lock Brakes (ABS)
Description................................. 220

Indicator Light..................... 35, 125

Operation.................................... 125

Anti-theft Steering Column Lock.. 49

Appearance Care........................... 183

Ashtray.............................................. 69

Audio System................................... 83

Automatic Speed Control................ 48
Automatic Transmission............... 120
Capacity, Fluid........................... 218

Checking Fluid Level................ 155
Shifting........................................ 120
Shift Lever Positions................. 120
Shift Lock Release..................... 123 Battery
Charging System Light............... 34
Jump Starting............................. 200 Maintenance............................... 162

Specifications............................. 219

Before Driving............................... 107
Belts, Seat........................................... 5
Beverage Holder.............................. 66
Body Repair.................................... 189
Brakes Anti-lock System (ABS)............ 125Break-in, New Linings .............. 108

Fluid............................................ 156

Light, Burned-out...................... 179

Parking.......................................... 65

System Indicator.......................... 34
Wear Indicators......................... 124
Brakes, ABS Description................................. 220Operation.................................... 125
System Indicator.................. 35, 125
Braking System.............................. 124
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Index
Break-in, New Car......................... 108
Brightness Control, Instruments... 41
Brights, Headlights......................... 40
Bulb Replacement Back-up Lights........................... 179
Brake Lights............................... 179
Ceiling Light............................... 181
Front Parking Lights................. 178
Front Side Marker Lights......... 178
Headlights.................................. 177
License Plate Lights.................. 180 Specifications............................. 219
Turn Signal Lights..................... 178
Bulbs, Halogen............................... 177
Cables, Jump Starting With.......... 200
Capacities Chart............................. 218
Carbon Monoxide Hazard............ 29

Cargo, Loading............................... 116

Cassette Player Care............................................. 101
Operation.............................. 87, 99
CAUTION, Explanation of............. ii
CD Player................................. 90, 102 Center Pocket.................................. 68
Certification Label......................... 216
Chains............................................. 174
Change Oil How to......................................... 148

When to....................................... 140

Changing a Flat Tire..................... 193
Changing Engine Coolant............. 152 Charging System Indicator.... 34, 205
Checking Automatic Transmission
Fluid........................................ 155
Battery Condition...................... 162
Brake Fluid................................. 156
Drive Belts.................................. 169
Engine Coolant........................... 150
Engine Oil................................... 146
Fuses........................................... 209
Power Steering Fluid................. 157
Checklist, Before Driving............. 118
Child Safety...................................... 20 Childproof Door Locks................... 52
Cigarette Lighter............................. 69

Cleaner, Air.................................... 158

Cleaning
Aluminum Wheels..................... 185
Carpeting................................... 186

Exterior...................................... 184

Fabric......................................... 186

Interior....................................... 186

Seat Belts................................... 187

Vinyl........................................... 186
Window...................................... 187

CLEAN Light................................ 101

Clock, Setting the .........................
66

CO in the Exhaust........................
224

Cold Weather, Starting in............ 119

Compact Spare............................... 192

Consumer Information*................ 227

Controls, Instruments and.............. 33

Coolant
Adding........................................

151

Checking................................ 150

Proper Solution......................
150

Temperature Gauge.................. 38

Corrosion Protection.................... 188

Crankcase Emission Control
System........................................ 224

Cruise Control Operation............. 46
Customer Relations Office.......... 229ProCarManuals.comMain Menu s t

Index

DANGER, Explanation of................. ii

Dashboard........................................ 32 Dashboard Compartment............... 68
Daytime Running Lights................. 40Dead Battery, What to Do............ 200
Defects, Reporting Safety............. 232
Defogger, Rear Window................. 43 Defrosting the Windows................. 79
DEXRON® II Automatic Transmission Fluid.................... 155

Dimensions.................................... 218

Dimming the Headlights................ 40
Dipstick Automatic Transmission........... 155

Engine Oil................................... 146

Directional Signals.......................... 43

Disabled, Towing Your Car If..... 213
Disc Brake Wear Indicators......... 124
Disposal of Used Oil...................... 150Doors Locking and Unlocking............... 50
Power Door Locks....................... 50
DOT Tire Quality Grading........... 222
Drive Belts...................................... 169
Driving............................................ 117

Economy..................................... 114

In Bad Weather.......................... 126

In Foreign Countries................. 109

Economy, Fuel............................... 114

Emergencies on the Road............. 191
Battery, Jump Starting.............. 200
Changing a Flat Tire................. 193
Charging System Indicator...... 205
Checking the Fuses................... 209
Low Oil Pressure Indicator...... 204
Malfunction Indicator Lamp.... 206
Manually Closing Sunroof........ 207
Overheated Engine................... 202

Emergency Brake............................ 65
Emergency Flashers....................... 43

Emission Controls......................... 224

Engine
Belts............................................. 169

Coolant Temperature Gauge..... 38
Malfunction Indicator
Lamp................................ 34,
206

Oil Pressur e
Indicator......... 34, 204Oil, What Kind to Use............... 147
Overheating................................ 202
Specifications............................. 219
Ethanol in Gasoline ....................... 109
Evaporative Emission Controls.... 224
Exhaust Fumes................................ 29Expectant Mothers, Use of Seat Belts by......................................... 10
Exterior, Cleaning the................... 184

Fabric, Cleaning............................. 186
Fan, Interior...................................... 74

Features, Comfort and
Convenience............................... 73

Filling the Fuel Tank..................... 110
Filter
Air................................................ 158
Oil................................................ 148

First Gear Position......................... 122
Flashers, Hazard Warning.............. 43

Flat Tire, Changing a.................... 193

CONTINUEDProCarManuals.comMain Menu s t

Index

Fluids
Automatic Transmission........... 155

Brake........................................... 156

Power Steering........................... 157

Windshield Washer................... 154

FM Stereo Radio
Reception.................................... 97

Folding the Second Seats ............... 58

Folding the Third Seats.................. 60

Foreign Countries, Driving in...... 109

Four-way Flashers......................... 43

Front End, Towing by Emergency
Wrecker.................................... 213

Fuel.................................................. 108
Fill Door and Cap....................... 110

Gauge.......................................... 38

Octane Requirement................. 108

Oxygenated................................ 108

Tank, Filling the......................... 110

Fuses, Checking the...................... 209

Gas Mileage, Improving................ 114

Gasohol........................................... 108

Gasoline.......................................... 108
Gauge.......................................... 38

Octane Requirement................. 108

Tank, Filling the......................... 110

Gas Station Procedures................. 110

Gauges Engine Coolant Temperature .... 38

Fuel.............................................. 38

Gearshift Lever Positions............. 120 Glass Cleaning............................... 187
Glove Box......................................... 53
Halogen Headlight Bulbs.............. 177
Hazard Warning Flashers............. 43

Headlights....................................... 40
Aiming......................................... 175Daytime Running Lights............. 40
High Beam Indicator................... 36High Beams, Turning on............ 40
Low Beams, Turning on............. 40
Reminder Chime.......................... 40 Replacing Halogen Bulbs ......... 177

Turning on.................................. 40

Head Restraints............................... 56
Heating and Cooling........................ 74 High Altitude, Starting at............ 119
High-Low Beam Switch............... 40

Hood, Opening the ...................... 111

Horn............................................... 39

Hot Coolant, Warning about...... 151 Hydroplaning................................ 127
Identification Number, Vehicle.. 216
If Your Car Has to be Towed..... 213Ignition
Keys............................................. 49

Switch.......................................... 49

Timing Control System............. 225
Indicator Lights, Instrument

Panel............................................. 33

Infant Restraint............................... 22 Inflation, Proper Tire .................... 170
Inside Mirror................................... 64

Inspection, Tire.............................. 171

Instrument Panel............................. 33

Instrument Panel Brightness........ 41
Interior Cleaning............................ 186
Interior Lights................................. 70

Introduction...................................... iProCarManuals.comMain Menu s t

Index
Jacking up the Car......................... 195

Jack, Tire........................................ 193
Jump Starting................................. 200
Keys................................................... 49
Label, Certification........................ 216
Lane Change, Signaling.................. 41Lap Belt............................................... 7
Lap/Shoulder Belts........................... 6
Leaking of Exhaust into Car.......... 29
Lighter, Cigarette............................ 69
Lights Headlight Aiming...................... 175Bulb Replacement..................... 177

Indicator........................................ 33

Parking.......................................... 40
Turn Signal................................... 41
Loading Cargo................................ 116
LOCK (Ignition Key Position)....... 50 Locks
Anti-theft Steering Column........ 49
Fuel Fill Door............................. 110Glove Box..................................... 53
Power Door.................................. 50
Tailgate......................................... 52
Low Coolant Level......................... 150 Low Oil Pressure Indicator.... 34, 204
Lubricant Specifications Chart.... 218
Luggage.......................................... 116
Maintenance................................... 135 Periodic Items............................ 144

Record.................................. 142-143

Required Indicator....................... 38
Safety........................................... 136Schedule.............................. 138-141
Malfunction Indicator Lamp.. 34, 206 Maximum Speeds.......................... 123
Meters, Gauges................................ 37
Methanol in Gasoline.................... 109

Mirrors, Adjusting...........................
64

Neutral Gea r
Position.................... 122
New Vehicle Break-in ................... 108
NOTICE, Explanation of................... ii
Numbers, Identification................ 216

Occupant Protection System............ 4
Octane Requirement, Gasoline.... 108

Odometer.......................................... 37

Odometer, Trip................................ 37

Oil Change, How to......................... 148

Change, When to....................... 140

Checking Engine....................... 146
Pressure Indicator....................... 34

Selecting Proper Viscosity
Chart....................................... 148

ON (Ignition Key Position)............ 50

Opening the Hood......................... 111

Operation in Foreign Countries... 109

CONTINUEDProCarManuals.comMain Menu s t