2008 HONDA CR-V engine

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 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 emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.
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 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.
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.
2
2
Exhaust Emissions Controls
Replacement PartsPGM-FI System
Ignit ion T iming Cont rol Syst em Three Way Catalytic Converter
Exhaust Gas Recirculat ion (EGR) Syst em
Emissions Cont rols
Technical Inf ormation
345
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2008 CR- V

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.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.
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. 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. Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
346
THREE WAY CATALYTIC CONVERTER
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2008 CR- V

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.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). 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 1/4 of the
scale (about 3 minutes).
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). Without touching the accelerator
pedal, let the engine idle f or 20
seconds.
1.
2.
3. 4.
5.
6.
CONT INUED
T esting of Readiness Codes
Emissions T esting
Technical Inf ormation
347
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2008 CR- V

Call Helm Inc. at 1-800-782-4356 (credit card orders only)
Go online at
T he publications shown below can be purchased f rom Helm
Incorporated. You can order by phone or online:
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.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
Purchasing Factory Authorized Manuals (U.S. only)
Authorized Manuals
353
Publication
Form Number 61SWA01
61SWA01EL
62SWA30
31SWA610
31SWA810
31SWAM10 31SWAQ10 HON-R Form Description
2008 Honda CR-V Service Manual 2008 Honda CR-V
Electrical Troubleshooting Manual
2007 Honda CR-V Body Repair Manual 2008 Honda CR-V Owner’s Manual 2008 Honda CR-V
Navigation System Owner’s Manual
2008 Honda CR-V Honda Service History 2008 Honda CR-V Quick Start Guide
Order Form for Previous Years-Indicate Year and Model Desired
www. helminc. com
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2008 CR- V

CONT INUED
BatteryCharging System ...........................
Indicator .60,324
............................
Jump Starting .320
..............................
Maintenance .309
............................
Specif ications .337
..............................
Bef ore Driving .225
....................................
Belts,Seat.8,18
.........................
Beverage Holders .116
..................................
Booster Seats .51
Brakes
...........
Anti-lock System (ABS) .254
.............
Break-in, New Linings .226 ....................
Bulb Replacement .291
...........................................
Fluid .289
.........................................
Parking .78
.................
System Indicator .60,326
..........................
System Design .253
........................
Wear Indicators .253
.............................
Braking System .253
.................
Break-in, New Vehicle .226
..
Brightness Control, Instruments .76
..................
Brights, Headlights .74,75
Bulb Replacement
..........................
Back-up Lights .295
..............................
Brake Lights .295
................
Front Parking Lights .294
........
Front Side Marker Lights .294
.................................
Headlights .291
.........
High-mount Brake Light .296
.........
Rear Side Marker Lights .295
............................
Specif ications .337
....................
Turn Signal Lights .293
..............................
Bulbs, Halogen .291
....................................
Accessories .234
ACCESSORY (Ignition Key
.......................................
Position) .81
............
Accessory Power Sockets .120
..................
Active Head Restraint .100
....................
Additives, Engine Oil .282
.......
Adjusting the Steering Wheel .78
...........................
Advanced Airbags .27
...............................
Airbag (SRS) .9,22
..............
Air Conditioning System .126
.........................................
Usage .127
.......................
Air Pressure, Tires .303
.......................
Alcohol in Gasoline .226
......................................
Antif reeze .284
Anti-lock Brakes (ABS)
...............................
Indicator .61,254
...................................
Operation .254
..............
Anti-thef t, Audio System .218
.
Anti-thef t Steering Column Lock .81
................................
Audio System .139
.....
Auto Door Locking/Unlocking .83
..........
Automatic Climate Control .132
...
Automatic Seat Belt Tensioners .20
.............
Automatic Speed Control .222 ..............
Automatic Transmission .247
..........................
Capacity, Fluid .336
...............
Checking Fluid Level .287
.....................................
D Mode .249
.......................................
Shif ting .247
Shif t Lever Position
...............................
Indicators .247
................
Shif t Lever Positions .248
....................
Shif t Lock Release .251
......................
Auxiliary Input Jack .217
3
Index
A
B
INDEX
I
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2008 CR- V

CONT INUED..............................
Economy, Fuel .231 ..................................
Emergencies .311
.............
Battery, Jump Starting .320
...........
Brake System Indicator .326
................
Changing a Flat Tire .313
.....
Charging System Indicator .324
..................
Checking the Fuses .327
.........
Hazard Warning Flashers .76
............................
Jump Starting .320
.....
Low Oil Pressure Indicator .324
...
Malf unction Indicator Lamp .325
..................
Overheated Engine .322
.......................................
Towing .332
...........................
Emergency Brake .78
......................
Emergency Flashers .76
......................
Emergency Towing .332
.......................
Emissions Controls .344
........................
Emissions Testing .347
Engine
............
Adding Engine Coolant .284
....
Coolant Temperature Gauge .69
.........................
If It Won’t Start .318
Malf unction Indicator
................................
Lamp .60,325
........
Oil Pressure Indicator .60,324
..............
Oil, What Kind to Use .281
...............................
Overheating .322 ............................
Specif ications .336
............................
Speed Limiter .250
.......................................
Starting .246
......................
Ethanol in Gasoline .226
.
Evaporative Emissions Controls .344
...............................
Exhaust Fumes .54
Expectant Mothers, Use of Seat
........................................
Belts by .16
...................................
Fan, Interior .127
.........................................
Features .125
....................
Filling the Fuel Tank .227
Filters
.........................
Dust and Pollen .298
...............................................
Oil .282
.............
Flashers, Hazard Warning .76
...................
Flat Tire, Changing a .313
Fluids
..........
Automatic Transmission .287
..........................................
Brake .289
..........................
Power Steering .290
..................
Windshield Washer .286
Dipstick
..........
Automatic Transmission .287
..................................
Engine Oil .230
..........................
Directional Signals .74
........
Disc Brake Wear Indicators .253
.....................
Disposal of Used Oil .283
Doors
..........................
Auto Door Lock .84
.......................
Auto Door Unlock .86
..............
Childproof Door Locks .88
..............
Locking and Unlocking .83
......................
Power Door Locks .82
..........
DOT Tire Quality Grading .338
...........
Driver and Passenger Safety .5
...........................................
Driving .243
....................................
Economy .231
........................
Driving Guidelines .244
.........................................
DMode .249
...................................
Dual Button .133
................
Dual Deck Cargo Shelf .114
..........
Dual Temperature Control .136
..................
Dust and Pollen Filter .298
3
Index
E F
INDEX
III
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2008 CR- V

.............
Halogen Headlight Bulbs .291
..............
Hazard Warning Flashers .76
Headlights
........................................
Aiming .291
............
Daytime Running Lights .75
..................
High Beam Indicator .63
.........................
Reminder Chime .75
........
Replacing Halogen Bulbs .291
...................................
Turning on .74
..............................
Head Restraints .98
.............................
Heated Mirrors .112
...................................
Heater, Seat .108
.....................
Heating and Cooling .126 ............................
High Beam Lever .74
.......................
Hood, Opening the .229
..............................................
Horn.4,72
...
Identif ication Number, Vehicle .334
Ignition
..............................................
Keys .79
...........................................
Switch .81
............
Timing Control System .345
........................
Immobilizer System .80
.........
Important Safety Precautions .6
.................
Folding Rear Seat .102,104
..........................
Four-way Flashers .76
..............................
Front Airbags .9,25
Front Seat
......................................
Adjusting .95
.......................................
Heaters .108
.....................................
Airbags .9,25
.................................................
Fuel .226
........
Check Fuel Cap Message .228
......................
Fill Door and Cap .227
.....................
Low Fuel Indicator .63
...........................................
Gauge .66
................
Octane Requirement .226
...............................
Oxygenated .226
........................
Tank, Ref ueling .227
...............................
Fuel Economy .231
.....................
Fuses, Checking the .327
...............
Gas Mileage, Improving .232
..........................................
Gasohol .226
.........................................
Gasoline .226
.....................
Low Fuel Indicator .63
...........................................
Gauge .69
................
Octane Requirement .226 ........................
Tank, Ref ueling .227
................
Gas Station Procedures .227
Gauges
...
Engine Coolant Temperature .69
...............................................
Fuel .69
Gearshif t Lever Positions ..........
Automatic Transmission .247
......................................
Glove Box .117
Gross Vehicle Weight Rating
.............................
(GVWR) .262,336
Index
G HI
IV
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2008 CR- V

..................................
Maintenance .271
................................
Minder .273-279
......
Main Items and Sub Items .276
Owner’s Maintenance
...................................
Checks .278
.........................
Minder Indicator .65
..........................................
Saf ety .272
.
Malf unction Indicator Lamp .60,325
.........................
Meters, Gauges .59,66
...................
Methanol in Gasoline .226
........................
Mirrors, Adjusting .111
...............
Modif ying Your Vehicle .235
.......................................
Moonroof .110
...................
Neutral Gear Position .249
..................
New Vehicle Break-in .226
...................
NOTICE, Explanation of .i
...............
Numbers, Identif ication .334 ...
Octane Requirement, Gasoline .226
.........................................
Odometer .69
...............................
Odometer, Trip .67
....................
Of f -Highway Driving .268
Oil
........................
Change, How to .282
......................
Change, When to .279
......................
Checking Engine .230
..............
Pressure Indicator .60,324
Selecting Proper Viscosity
......................................
Chart .281
...........
ON (Ignition Key Position) .81
Onboard Ref ueling Vapor
....................................
Recovery .344
............................
Outside Mirrors .112
....
Outside Temperature Indicator .69
....................
Overheating, Engine .322
....
Owner’s Maintenance Checks .278
.........................
Oxygenated Fuels .226
..............
Panel Brightness Control .76
........................
Park Gear Position .248 ...........................................
Parking .252
.................................
Parking Brake .78
Parking Brake and Brake
.................
System Indicator .60,326
.................................
Parking Lights .74
..
Parking Over Things that Burn .252
....
Passenger Airbag Of f Indicator .32
...........................................
PC card .198
.............
PC card Error Messages .210
.............................
PGM-FI System .345
...................................
Pollen Filter .298
..........................
Power Door Locks .82
.....................................
Power Seats .94
...............
Power Socket Locations .120
....................
Power Steering Fluid .290
............................
Power Windows .109
.........
Pregnancy, Using Seat Belts .16
........................
Preparing to Drive .245
.........
Protecting Adults and Teens .11
...
Additional Safety Precautions .17
.....
Advice f or Pregnant Women .16
...
Lubricant Specif ications Chart .336
...........
Luggage, Storing (Cargo) .236
...........
Luggage Net (Cargo Net) .241
Index
O
P
N M
VI
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